CEE Faculty Profile

Laurence J. Jacobs

Associate Dean and Professor

Affinity Group: Structural Engineering, Mechanics and Materials

Office: Mason 296
Phone: 404/894-2344
Email: laurence.jacobs@coe.gatech.edu
Web: http://people.ce.gatech.edu/~lj2

Professor Jacobs has a unique combination of research experience in nondestructive evaluation and civil engineering, including research in the characterization of adhesive bonds, composites and cement-based materials. Dr. Jacobs has authored/co-authored over 120 papers in refereed journals and conference proceedings and is a past Associate Editor of ASCE's Journal of Engineering Mechanics and currently on the editorial board of NDT&E International. After receiving his B.S. in Civil Engineering, Dr. Jacobs worked for two years in the aerospace industry and for one year as a structural engineer. He received a Grumman Aerospace Masters Fellowship in 1980, which allowed him to complete his studies (part-time) for the M.S. degree in 1981. Dr. Jacobs received his Ph.D. in 1987, and worked for one year as an Office of Naval Technology Postdoctoral Fellow prior to coming to Georgia Tech in 1988. At Georgia Tech, Professor Jacobs was promoted from Assistant to Associate Professor and received tenure (both in 1994) and to Professor in April 2000. Dr. Jacobs has been the Associate Chair for Undergraduate Programs in the School of Civil and Environmental Engineering since 1995, and received a joint appointment with the Woodruff School of Mechanical Engineering in 2003.

Research Interests

  • Quantitative nondestructive evaluation of civil engineering materials
  • Wave propagation in solids, emphasizing guided waves, nonlinear methods and heterogeneous materials
  • Signal processing techniques applied to nondestructive evaluation
  • Development of acoustic sensors for condition monitoring of structural components

Education

  • Ph.D., Engineering Mechanics, Columbia University, 1987.
  • M.S., Civil Engineering, Polytechnic Institute of New York, 1981.
  • B.S., Civil Engineering, Lafayette College, 1979.

Honors

  1. Georgia Tech Chapter of Sigma Xi, Best Faculty Paper Award April, 2007
  2. Freshman Partner of the Year Award, Freshman Experience May, 2005
  3. Faculty Excellence Award, Women in Engineering May, 2003
  4. ANAK Award May, 1998
  5. Class of 1940 W. Roane Beard Outstanding Teacher Award May, 1993
  6. Amoco/CETL Junior Faculty Teaching Excellence Award July, 1991
  7. Lilly Teaching Fellowship July, 1990
  8. Grumman Aerospace Masters Fellowship April, 1980

Articles

  1. Walker, S.V., Kim, Jin-Yeon, Qu, Jianmin and Jacobs, L.J., “Fatigue damage evaluation in A36 steel using nonlinear Rayleigh waves,” NDT&E International, submitted, 2011.
  2. Matlack*, K.H., Wall, J., Kim, Jin-Yeon, Qu, Jianmin, Jacobs, L.J. and Viehrig, H.-W., “evaluation of radiation damage using nonlinear ultrasound,” Applied Physics Letters, submitted, 2011.
  3. Tang*, Guangxin, Qu, Jianmin, and Jacobs, L.J. “Scattering of time-harmonic elastic waves by an inclusion with quadratic nonlinearity,” Journal of the Acoustical Society of America, submitted 2011.
  4. Liu, Yu*, Kim, Jin-Yeon, Jacobs, L.J, Qu, Jianmin and Li, Zheng, “Experimental investigation of symmetry properties of second harmonic Lamb waves,” Journal of Applied Physics, submitted, 2011.
  5. Schurr*, D.P., Kim, J.-Y., Sabra, K.G., and Jacobs, L.J., “Damage detection in concrete using coda interferometry,” NDT&E International, Vol. 44, pp. 728-735, 2011.
  6. Qu, J., Nagy, P.B, and Jacobs, L.J., “Pulse propagation in an elastic medium with quadratic nonlinearity,” Journal of the Acoustical Society of America, submitted, 2011.
  7. Leśnicki*, K.J., Kim, J.-Y., Kurtis, K. E., and Jacobs, L.J., “Assessment of alkali-silica reaction damage through quantification of concrete nonlinearity,” Materials and Structures, submitted 2011.
  8. Qu, Jianmin, Jacobs, L.J. and Nagy P.B., “On the acoustic-radiation-induced strain and stress in elastic solids with quadratic nonlinearity,” Journal of the Acoustical Society of America, Vol. 129 (6), pp. 3449-3452, 2011.
  9. Pertsch*, A., Kim, J.-Y., Wang, Y., and Jacobs, L.J. “An intelligent stand-alone ultrasonic device for monitoring local structural damage: implementation and preliminary experiments,” Smart Materials and Structures, Vol. 20, 015022, 2011.
  10. Leśnicki*, K.J., Kim, J.-Y., Kurtis, K. E., and Jacobs, L.J., “Characterization of ASR damage in concrete using nonlinear impact resonance acoustic spectroscopy,” NDT&E International, Vol. 44, pp. 721-727, 2011.
  11. Chen*, J., Kim, Jin-Yeon, Kurtis, K.E., and Jacobs, L.J., “Theoretical and experimental study of nonlinear resonance vibration of cementious materials with an application to damage characterization,” Journal of the Acoustical Society of America, accepted for publication, 2011.
  12. Matlack*, K.H., Kim, Jin-Yeon, Jacobs, L.J and Qu, Jianmin, “Experimental characterization of efficient second harmonic generation of Lamb wave modes in a nonlinear elastic isotropic plate,” Journal of Applied Physics, Vol. 109, 014905, 2011.
  13. Liu*, Minghe, Kim, Jin-Yeon, Jacobs, L.J., and Qu, Jianmin “Experimental study of nonlinear Rayleigh wave propagation in shot-peened aluminum plates – feasibility of measuring residual stress,” NDT&E International, Vol. 44, pp. 67-74, 2011.
  14. Apetre, N. Ruzzene, M., Jacobs L.J. and Qu, J., “Measurement of the Rayleigh wave polarization using 1D laser vibrometry,” NDT&E International, Vol. 44, pp. 247-253, 2011.
  15. Kerber*, F., Sprenger* (Kuttig), H., Niethammer*, M., Luangvilai*, K., and Jacobs, L.J. “Attenuation evaluation of Lamb waves using the Chirplet transform,” EURASIP Journal on Advances in Signal Processing, http://www.hindawi.com/journals/asp/2010/375171.html Article 375171, 6 pages, 2010.
  16. Mueller*, M.F., Kim, Jin-Yeon, Qu, Jianmin, and Jacobs, L.J., “Characteristics of second harmonic generation of Lamb waves in nonlinear elastic plates,” Journal of the Acoustical Society of America, Vol. 127 (4), pp. 2141-2152, 2010.
  17. Deroo*, F., Kim, Jin-Yeon, Qu, Jianmin, Sabra, K.P. and Jacobs, L.J., “Detection of damage in concrete using diffuse ultrasound,” Journal of the Acoustical Society of America, Vol. 127 (6), pp. 3315-3318, 2010.
  18. Chen*, J., Jayapalan, A., Kim, Jin-Yeon, Kurtis, K.E., and Jacobs, L.J., “Rapid evaluation of alkali-silica reactivity of aggregates using a nonlinear spectroscopy technique,” Cement and Concrete Research, Vol. 40, pp. 914-923, 2010.
  19. Treiber*, M., Kim, Jin-Yeon, Qu, Jianmin, and Jacobs, L.J., “Effects of sand aggregate on ultrasonic attenuation in cement-based materials,” Materials and Structures, Vol. 43 (Supplement 1) 1-11, 2010.
  20. Kmack*, R.M., Kurtis, K.E., Jacobs, L.J., and Kim, Jin-Yeon, “Characterization of air voids in fresh cement paste through ultrasonic nondestructive testing,” J. of ASTM International, Vol. 7, No. 1, JAI102452 (18 pages), 2009.
  21. Chen*, J., Jayapalan, A., Kurtis, K.E., Kim, Jin-Yeon, and Jacobs, L.J., “Nonlinear wave modulation spectroscopy method for ultra-accelerated assessment of alkali-silica reaction in Portland cement mortar,” J. ACI Materials, Vol. 106, pp. 340-348, 2009.
  22. Treiber*, M., Kim, Jin-Yeon, Jacobs, L.J., and Qu, Jianmin, “Correction for partial reflection in ultrasonic attenuation measurements using contact transducers,” Journal of the Acoustical Society of America, Vol. 125 (5), pp. 2946-2953, 2009.
  23. Pruell*, C., Kim, Jin-Yeon, Qu, Jianmin, and Jacobs, L.J., “Evaluation of fatigue damage using nonlinear guided waves,” Smart Materials and Structures, Vol. 18, 035003 (7 pages), 2009.
  24. Pruell*, C., Kim, Jin-Yeon, Qu, Jianmin, and Jacobs, L.J., “A nonlinear guided wave technique for evaluating plasticity-driven material damage in a metal plate,” NDT&E International, Vol. 42, pp. 199-203, 2009.
  25. In*, Chi-Won, Kim, Jin-Yeon, Kurtis, K.E., and Jacobs, L.J., “Characterization of ultrasonic Rayleigh surface waves in asphalt concrete,” NDT&E International, Vol. 42, pp. 610-617, 2009.
  26. Kuechler*, S., Meurer*, T., Jacobs, L.J., and Qu, J., “Two-dimensional wave propagation in an elastic half-space with quadratic nonlinearity – a numerical study,” Journal of the Acoustical Society of America, Vol. 125, No. 3, pp. 1293-1301, 2009.
  27. Shui, G., Kim, J.Y., Qu, J., Wang, Y.-S. and Jacobs, L.J., “A new technique for measuring the acoustic nonlinearity of materials using Rayleigh waves,” NDT&E International, Vol. 41, pp. 326-329, 2008.
  28. Bermes*, C., Kim, J.Y., Qu, J., and Jacobs, L.J., “Nonlinear Lamb waves for the detection of material nonlinearity,” Mechanical Systems and Signal Processing, Vol. 22, pp. 638-646, 2008.
  29. Chen, X.J., Kim, J.-Y., Kurtis, K.E., Qu, Jianmin, Wu, S.C. and Jacobs, L.J., “Characterization of progressive microcracking in Portland cement mortar using nonlinear ultrasonics,” NDT&E International, Vol. 41, pp.112-118, 2008.
  30. Koreck*, J., Valle*, C., Qu, J., and Jacobs, L.J., “Computational characterization of adhesive layer properties using guided waves in bonded plates,” Journal of NDE, Vol. 26 (2-4) pp. 97-105, 2007.
  31. Pruell*, C., Kim, J.Y., Qu, J., and Jacobs, L.J., “Evaluation of plasticity driven material damage using Lamb waves,” Applied Physics Letters, Vol. 91, 231911, 2007.
  32. Bermes*, C., Kim, J.Y., Qu, J., and Jacobs, L.J., “Experimental characterization of material nonlinearity using Lamb waves,” Applied Physics Letters, Vol. 90 (2), 021901, 2007.
  33. Punurai*, W., Jarzynski, J., Qu, Jianmin, Kim, J.-Y., Jacobs, L.J., and Kurtis, K.E., “Characterization of multi-scale porosity in cement paste by advanced ultrasonic techniques,” Cement and Concrete Research, Vol. 37, pp. 38-46, 2007.
  34. Punurai*, W., Jarzynski, J., Qu, Jianmin, Kurtis, K.E., and Jacobs, L.J., “Characterization of dissipation losses in cement paste with diffuse ultrasound,” Mechanics Research Communication, 34, 289-294, 2007.
  35. Kim, J.Y., Jacobs, L.J., Qu, J., and Littles*, J.W., “Experimental characterization of fatigue damage in a nickel-base superalloy using nonlinear ultrasonic waves,” Journal of the Acoustical Society of America, Vol. 120 (3) pp. 1266-1273, 2006.
  36. Herrmann*, J., Kim, J.Y., Jacobs, L.J., Qu, J., Littles, J.W., and Savage, M.F., “Assessment of material damage in a nickel-base superalloy using nonlinear Rayleigh surface waves,” Journal of Applied Physics, Vol. 99 (12), 124913, 2006.
  37. Hurlebaus*, S. and Jacobs, L.J., “Dual-probe laser interferometer for structural health monitoring,” Journal of the Acoustical Society of America, Vol. 119 (7) pp. 1923-1925, 2006.
  38. Kuttig*, H., Niethammer*, M., Hurlebaus*, S. and Jacobs, L.J., “Model-based Analysis of Dispersion Curves,” Journal of the Acoustical Society of America, Vol. 119 (7), pp. 2122-2130, 2006.
  39. Junge, M., Qu, J., and Jacobs, L.J., “Relationship between Rayleigh wave polarization and state of stress,” Ultrasonics, Vol. 44 (3), pp. 233-237, 2006.
  40. Kim, J.Y., Qu, J., Jacobs, L.J., Littles*, J.W., and Savage, M.F., “Acoustic Nonlinearity Parameter due to Microplasticity,” Journal of NDE, Vol. 25 (1), pp. 29-37, 2006.
  41. Punurai*, W., Jarzynski, J., Qu, J., Kurtis, K.E., and Jacobs, L.J., “Characterization of Entrained Air Voids in Cement Paste with Scattered Ultrasound,” NDT&E International, Vol. 39 (6), pp. 514-524, 2006.
  42. Kotte*, O., Niethammer*, M. and Jacobs, L.J., “Lamb Wave Characterization by Differential Reassignment and Nonlinear Anisotropic Diffusion,” NDT&E International, Vol. 39, pp. 96-105, 2006.
  43. Blum*, F., Jarzynski, J. and Jacobs, L.J., “A Focused Two-dimensional Air-coupled Ultrasonic Array for Non-contact Generation,” NDT&E International, Vol. 38, pp. 634-642, 2005.
  44. Benz*, R., Niethammer*, M., Hurlebaus*, S. and Jacobs, L.J., “Localization of Notches with Lamb Waves,” Journal of the Acoustical Society of America, Vol. 114 (2), pp. 677-685, 2003.
  45. Becker*, J., Jacobs, L.J. and Qu, J., “Characterization of Cement-Based Materials using Diffuse Ultrasound,” Journal of Engineering Mechanics, Vol. 129, No. 12, pp. 1478-1484, 2003.
  46. Stolzenburg*, J.C., Doane, J., Jarzynski, J. and Jacobs, L.J., “Non-contact Method to Measure Material Properties of Layered Media,” NDT&E International, Vol. 36, No. 7, pp. 523-533, 2003.
  47. Emamian, V., Kaveh, M., Tewfik, M., Shi*, Z., Jacobs, L.J., and Jarzynski, J., “Robust Clustering of Acoustic Emission Signals using Neural Networks and Signal Subspace Projections,” EURASIP Journal on Applied Signal Processing, Vol. 2003, No. 3, pp. 276-286, 2003.
  48. Qu, J. and Jacobs, L.J., “Guided Circumferential Waves and Their Applications in Characterizing Cracks in Annular Components,” Materials Evaluation, Vol. 61, No. 1, pp. 85-93, 2003.
  49. Luangvilai*, K., Punurai*, W. and Jacobs, L.J., “Guided Lamb Wave Propagation in a Composite Plate/Concrete Component,” Journal of Engineering Mechanics, Vol. 128, No. 12, pp. 1337-1341, 2002.
  50. Meurer*, T., Qu, Jianmin and Jacobs, L.J., “Wave Propagation in Nonlinear and Hysteretic Media – A Numerical Study,” International Journal of Solids and Structures, Vol. 39, No. 21-22, pp. 5585-5614, 2002.
  51. Seifried*, R., Jacobs, L.J. and Qu Jianmin, “Propagation of Guided Waves in Adhesive Bonded Components,” NDT&E International, Vol. 35, No. 5, pp. 317-328, 2002.
  52. Hurlebaus*, S., Niethammer*, M., Jacobs, L.J. and Valle*, C., “Automated Methodology to Locate Notches with Lamb Waves,” Acoustics Research Letters Online, Vol. 2, No. 4, pp. 97-102, 2001.
  53. Niethammer*, M., Jacobs, L.J., Qu, Jianmin, and Jarzynski, J., “Time-Frequency Representation of Lamb Waves,” Journal of the Acoustical Society of America, Vol. 109, No. 5, pp. 1841- 1847, 2001.
  54. Valle*, C., Niethammer*, M., Qu, J. and Jacobs, L.J., “Crack Characterization using Guided Circumferential Waves,” Journal of the Acoustical Society of America, Vol. 110, no. 3, pp. 1282-1290, 2001.
  55. Niethammer*, M., Jacobs, L.J., Qu, Jianmin, and Jarzynski, J., “Time-Frequency Representation of Lamb Waves using the Reassigned Spectrogram,” Journal of the Acoustical Society of America, (Acoustics Research Letters Online) Vol. 107, No. 5, pp. L19-L24, 2000.
  56. Heller*, K., Jacobs, L.J. and Qu, Jianmin, “Application of Laser Generated and Detected Lamb Waves to Characterize Adhesive Bonds,” NDT&E International, Vol. 33, No. 8, pp. 555-563, 2000.
  57. Hurlebaus*, S., Gaul, L. and Jacobs, L.J., “Wavelet Transform to Identify the Location of a Propagating Surface Crack in a Fatigue Specimen,” Research in Nondestructive Evaluation, Vol. 13, No. 2, pp. 105-117, 2001.
  58. Dokun*, O.D., Jacobs, L.J. and Haj-Ali, R. “Ultrasonic Monitoring of Material Degradation in FRP Composites,” Journal of Engineering Mechanics, Vol. 126, No. 7, pp. 704-710, 2000.
  59. Eisenhardt*, C., Jacobs, L.J. and Qu, Jianmin “Application of Laser Ultrasonics to Develop Dispersion Curves for Elastic Plates,” Journal of Applied Mechanics, Vol. 66, No. 4, pp. 1043-1045, 1999.
  60. Meyer, M.D. and Jacobs, L.J. “A Civil Engineering Curriculum for the Future: The Georgia Tech Case,” ASCE Journal of Professional Issues, Vol. 126, No. 2, pp. 74-78, 2000.
  61. Jacobs, L.J. and Owino*, J.O., “Effect of Aggregate Size on Attenuation of Rayleigh Waves in Cement-Based Materials,” Journal of Engineering Mechanics, Vol. 126, No. 11, pp. 1124-1130, 2000.
  62. Shi*, Zhiqiang, Jarzynski, J., Bair, S., Hurlebaus*, S. and Jacobs, L.J., “Characterization of Acoustic Emission Signals from Fatigue Fracture,” Journal of Mechanical Engineering Sciences, Vol. 214, Part C, pp. 1141-1149, 2000.
  63. Qu, J, Liu, G and Jacobs L.J., “Using Ultrasonic Parameter to Characterize the Curing of Adhesive Joints,” Abstracts of Papers of the American Chemical Society, Vol. 218, U637-U638, 1999.
  64. Kley*, M., Valle*, C., Jacobs, L.J., Qu, J. and Jarzynski, J. “Development of Dispersion Curves for Two-Layered Cylinders using Laser Ultrasonics,” Journal of the Acoustical Society of America, Vol. 106, No. 2, pp. 582-588, 1999.
  65. Qu, Jianmin, Berthelot, Y.H. and Jacobs, L.J., “Crack Detection in Thick Annular Components using Ultrasonic Guided Waves,” Journal of Mechanical Engineering Sciences, Vol. 214, Part C, pp. 1163-1171, 2000, Winner of the 2000 Water Arbitration Prize.
  66. Owino*, J.O. and Jacobs, L.J, “Attenuation Measurements in Cement-based Materials using Laser Ultrasonics,” Journal of Engineering Mechanics, Vol. 125, No. 6, pp. 637-647, 1999.
  67. Valle*, C., Qu, J. and Jacobs, L.J., “Guided Circumferential Waves in Layered Cylinders,” International Journal of Engineering Science, Vol. 37, pp. 1369-1387, 1999.
  68. Littles*, J.W., Jacobs, L.J. and Zurieck, A.H., “Single-Sided Ultrasonic Technique to Characterize Thick FRP Composites,” Journal of Nondestructive Evaluation, Vol. 17, No. 4, pp. 223-230, 1998.
  69. Moser*, F., Jacobs, L.J. and Qu, J, “Modeling Elastic Wave Propagation in Waveguides with the Finite Element Method,” NDT&E International, Vol. 32, No. 4, pp. 225-234, 1999.
  70. Bruttomesso*, D.A. and Jacobs, L.J, “Transfer Functions to Remove the Effect of Corners on Rayleigh Waves,” Journal of Engineering Mechanics, Vol. 125, No. 1, pp. 111-117, 1999.
  71. Littles*, J.W., Jacobs, L.J. and Zurieck, A.H., “Ultrasonic Techniques to Characterize Pultruded Composite Members,” Journal of Composites for Construction, Vol. 2, No. 3, pp. 126-131, 1998, Honorable Mention, Best Research Paper.
  72. Hurlebaus*, S., Jacobs, L.J. and Jarzynski, J., “Laser Techniques to Characterize the Effect of Geometry on Acoustic Emission Signals,” Nondestructive Testing and Evaluation, Vol. 14, pp. 21-37, 1998.
  73. Bruttomesso*, D.A., Jacobs, L.J. and Fiedler, C., “Experimental and Numerical Investigation of the Interaction of Rayleigh Surface Waves with Corners,” Journal of Nondestructive Evaluation, Vol. 16, No. 1, pp. 21-30, 1997.
  74. Jacobs L.J. and Whitcomb*, R., “Laser Generation and Detection of Ultrasound in Concrete,” Journal of Nondestructive Evaluation, Vol. 16, No. 2, pp. 57-65, 1997.
  75. Johnson, M.A., Berthelot, Y.H., Brodeur, P.H. and Jacobs, L.J., “Investigation of Laser Generation of Lamb Waves in Copy Paper,” Ultrasonics, Vol. 34, pp. 703-710, 1996.
  76. Littles*, J.W., Jacobs, L.J., and Qu, J., “Experimental and Theoretical Investigation of Scattering from a Distribution of Cracks,” Ultrasonics, Vol. 33, No. 1, pp. 37-43, 1995.
  77. Costley, R.D., Berthelot, Y.H. and Jacobs, L.J., “Laser Based Techniques to Resolve Mode Propagation of Lamb Waves in Plates,” Journal of Acoustic Emission, Vol. 12, No. 1/2, pp. 27-38, 1994.
  78. Costley, R.D., Berthelot, Y.H. and Jacobs, L.J. “Fresnel Arrays for the Study of Lamb Waves in Laser Ultrasonics,” Journal of Nondestructive Evaluation, Vol. 13, No. 1, pp. 33-42, 1994.
  79. Jacobs, L.J. and Lee, Xiaogong, “Integral Equation Method in Dynamic Fracture Mechanics,” Mechanics Research Communications, Vol. 21, No. 3, pp. 255-267, 1994.
  80. Rix, G.J., Jacobs, L.J. and Reichert, C., “Evaluation of Nondestructive Test Methods for Length, Diameter and Stiffness Measurements on Drilled Shafts,” Transportation Research Record, No. 1415, pp. 69-77, 1993.
  81. Jacobs, L.J. and Woolsey*, C.A., “Transfer Functions for Acoustic Emission Transducers using Laser Interferometry,” Journal of the Acoustical Society of America, Vol. 94, No. 6, pp. 3506-3508, 1993.
  82. Bruttomesso*, D., Jacobs, L.J. and Costley, R.D., “Development of an Interferometer for Acoustic Emission Testing,” Journal of Engineering Mechanics, Vol. 119, No. 11, pp. 2303-2316, 1993.
  83. Jacobs, L.J., Scott, W.R., Granata, D.M., and Ryan, M.J., “Experimental and Analytical Characterization of Acoustic Emission Signals,” Journal of Nondestructive Evaluation, Vol. 10, No. 2, pp. 63-70, 1991.
  84. Jacobs, L.J., “Characterization of Acoustic Emission Signals from a Mode I Crack,” Journal of Engineering Mechanics, Vol. 117, No. 8, pp. 1878-1889, 1991.
  85. Jacobs, L.J. and Bieniek, M.P., “An Integral Equation Method for Dynamic Crack Growth Problems,” International Journal of Fracture, Vol. 46, pp. 207-221, 1990.

Books

  1. Qu, Jianmin and Jacobs, L.J., Cylindrical Waveguides and Their Applications in Ultrasonic Evaluation, in Ultrasonic Nondestructive Evaluation: Engineering and Biological Material Characterization, T. Kundu, Editor, CRC Press, pp. 311-362, 2003.
  2. Voyiadjis, G.Z., Bank, L.C. and Jacobs, L.J. (Editors), Mechanics of Materials and Structures, Proceedings of the Symposium in Honor of Professor Maciej P. Bieniek at the ASCE-ASME-SES Joint Meeting, Studies in Applied Mechanics Vol. 35, Elsevier, Amsterdam, 1994.

Proceedings

  1. Liu, Minghe*, Tang, G.*, Jacobs, L.J. and Qu, Jianmin, “A nonlinear wave mixing method for detecting ASR reactivity of aggregates,” presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  2. Matlack, K.H., Kim, Jin-Yeon, Jacobs, L.J., Qu, Jianmin, and Singh, P. “Nonlinear Rayleigh waves to detect initial damage leading to stress corrosion cracking in carbon steel,” presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  3. Liu, Yu, Kim, Jin-Yeon, Jacobs, L.J., Qu, and Li, Z., "Modal preference of cumulative second harmonic generation in Lamb waves," presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  4. Walker, S., Kim, Jin-Yeon, Jacobs, L.J., and Qu, Jianmin "Characterization of fatigue damage in A36 steel specimens using nonlinear Rayleigh surface waves," presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  5. Ehrlich, C., Kim, Jin-Yeon, Jacobs, L.J., Qu, Jianmin, and Wall, J. "experimental characterization of creep damage in a welded steel component using a nonlinear ultrasonic technique," presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  6. In, Chiwon, Kim, Jin-Yeon, Kurtis, K. and Jacobs, L.J., "Crack depth measurements in concrete using diffuse ultrasound," presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  7. Seher, M., Kim, Jin-Yeon and Jacobs, L.J., "Finite element simulation of crack depth measurements in concrete using diffuse ultrasound," presented at 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, Burlington, VT, July 17-22, 2011, to appear, Vol. 31, 2012.
  8. Matlack, K.H., Kim, J.-Y., Jacobs, L.J., and Qu, J., "Feasibility of using nonlinear guided waves to measure acoustic nonlinearity of aluminum," presented at SPIE Smart Structures/NDE 2011, San Diego, California, SPIE Proc. 7984, 2011.
  9. Schurr, D.P., Kim, J.-Y., Sabra, K.G., and Jacobs, L.J., "Monitoring damage in concrete using diffusion ultrasonic coda wave interferometry," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30B, pp. 1283-1290, 2011.
  10. Chen, J., Lesnicki, K.J., Kim, J.-Y., Kurtis, K. E., and Jacobs, L.J., "NDT techniques for characterizing alkali-silica reaction in standard concrete specimens - a review," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30B, pp. 1275-1282, 2011.
  11. Lesnicki, K.J., Kim, J.-Y., Kurtis, K. E., and Jacobs, L.J., "Characterization of alkali-silica reaction in concrete specimens using a nonlinear vibration technique," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30B, pp. 1267-1274, 2011.
  12. Liu, Minghe, Tang, Guangxin, Jacobs, L.J., and Qu, Jianmin, "Measuring acoustic nonlinearity by collinear mixing waves," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30A, pp. 322-329, 2011.
  13. Tang, Guangxin, Jacobs, L.J., and Qu, J., "Wave propagation in elastic medium with heterogeneous quadratic nonlinearity," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30A, pp. 43-50, 2011.
  14. Matlack, K.H., Kim, J.-Y., Qu, J. and Jacobs, L.J., "On the efficient excitation of second harmonic generation using Lamb wave modes," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30A, pp. 291-297, 2011.
  15. Bender, F.A., Kim, J.-Y., Qu, J. and Jacobs, L.J., "Nonlinear reflection of an obliquely incident longitudinal wave at a free surface," presented at 37th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 19-23, 2010, Vol. 30A, pp. 298-3052011.
  16. Darraugh. N., Kurtis, K.E., Jacobs, L.J., and Kim, J.-Y., "Air Void Characterization in Fresh Cement Paste through Ultrasonic Attenuation using an Immersion Procedure," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29A, pp. 1077-1084, 2010.
  17. Pertsch, A., Jacobs, L.J., Kim, J.-Y., and Wang, Y., "An intelligent stand-alone ultrasonic device for monitoring local damage growth in civil structures," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29B, pp. 1718-1788, 2010.
  18. Mueller, M., Kim, J.-Y., Qu, J. and Jacobs, L.J., "On the excitability of second harmonic Lamb waves in isotropic plates," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29A, pp. 319-326, 2010.
  19. Deroo, F., Jacobs, L.J., Kim, J.-Y., Qu, J. and Sabra, K., "Damage detection in concrete using diffuse ultrasound measurements," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29B, pp. 1509-1516, 2010.
  20. Liu, M., Kim, J.-Y., Qu, J. and Jacobs, L.J., "Measuring residual stress using nonlinear ultrasound," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29B, pp. 1365-1372, 2010.
  21. Chen, J., Jayapalan, A.R., Kim, J.-Y., Kurtis, K.E. and Jacobs, L.J., "Characterization of distributed damage in mortars using a nonlinear acoustic technique," presented at 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, July 27-31, 2009, Vol. 29B, pp. 1517-1524, 2010.
  22. Pruell, C., Kim, J.-Y., Qu, Jianmin and jacobs, L.J., "Evaluation of fatigue damage using nonlinear guided waves," presented at the 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Chicago, Illinois, July 20-25, 2008, Vol. 28A, pp. 201-208, 2009.
  23. Treiber, M., Kim, J.-Y., Qu, J. and Jacobs, L.J., "Characterization of cement-based multiphase materials using ultrasonic wave attenuation," presented at 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Chicago, Illinois, July 20-25, 2008, Vol. 28B, pp. 1520-1527, 2009.
  24. Kim, J.-Y., Treiber, M., In, C.-W, and Jacobs, L.J., "A switching technique for measuring high ultrasonic attenuation," presented at 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Chicago, Illinois, July 20-25, 2008, Vol. 28B, pp. 1611-1618, 2009.
  25. Chen, J., Jayapalan, A.R., Kim, J.-Y., Kurtis, K.E. and Jacobs, L.J., "Rapid assessment of alkali-silica reaction damage in cement mortars by nonlinear acoustic techniques," presented at 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Chicago, Illinois, July 20-25, 2008, Vol. 28B, pp. 1543-1549, 2009.
  26. Braun, M., Jacobs, L.J., Qu, J. and Kuechler, S., "Determination of third-order elastic constants using second-harmonic generation in an elastic material with quadratic nonlinearity," presented at 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Chicago, Illinois, July 20-25, 2008, Vol. 28A, pp. 246-253, 2009.
  27. Kuechler, S., Meurer, T., Qu, J., and Jacobs, L.J., "On the solution to the Lamb problem in an elastic half-space with quadratic nonlinearity," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27A, pp. 70-77, 2008.
  28. Pruell, C., Kim, J.-Y., Jacobs, L.J., and Qu, J., "Generation and detection of Lamb waves to detect plasticity-induced changes in the microstructure," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27B, pp. 1275-1281, 2008.
  29. In, C., Kim, J.-Y., Jacobs, L.J., and Kurtis, K., "Characterization of dispersive Rayleigh surface waves in asphalt concrete," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27B, pp. 1333-1338, 2008.
  30. Kmack, R., Kim, J.-Y., Kurtis, and Jacobs, L.J., "Characterization of air voids in fresh cement paste through ultrasonic nondestructive testing," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27B, pp. 1339-1344, 2008.
  31. Kim, J.-Y., Shui, G., Qu, J. and Jacobs, L.J., "A Rayleigh wave technique to measure the absolute nonlinear parameter of materials," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27B, pp. 1267-1274, 2008.
  32. Chen, J., Amal, R.J., Kim, J.-Y., Kurtis, K. and Jacobs, L.J., "Assessment of alkali-silica reaction damage in mortars with nonlinear ultrasound," presented at 34th Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 22-27, 2007, Vol. 27B, pp. 1345-1352, 2008.
  33. Jacobs, L.J., Hermann, J., Qu, J. and Kim, J.-Y., "Characterization of fatigue damage in a nickel-base superalloy using nonlinear ultrasonic waves," presented at the Festschrift zum 60th Geburtstag for Professor Lothar Gaul, Stuttgart, Germany, Angewandte und Experimentelle Mechanik Ein Querschnitt, K. Wilner and M. Hanss, pp. 91-102, 2006.
  34. Chen, X.J., Kim, J.-Y., Qu, J., Kurtis, K., Wu, S.C. and Jacobs, L.J., "Microcrack identification in cement-based materials using nonlinear acoustic waves," presented at 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, July 31-August 4, 2006, Vol. 26B, pp. 1361-1367, 2007.
  35. Koreck, J., Valle, C., Qu, Jianmin, and Jacobs, L.J., "Computational characterization of adhesive bond properties using guided waves in bonded plates," presented at 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, July 31-August 4, 2006, Vol. 26B, pp. 1118, 2007.
  36. Kerber, F., Kuttig, H., Luangvilai, K., Niethammer, M., and Jacobs, L.J., "Dispersive wave analysis using the chirplet transform," presented at 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, July 31-August 4, 2006, Vol. 26A, pp. 642-649, 2007.
  37. Bermes, C., Jacobs, L.J., Kim, J.-Y. and Qu, J., "Cumulative second harmonic generation in Lamb waves for the detection of material nonlinearities," presented at 33rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Portland, Oregon, July 31-August 4, 2006, Vol. 26A, pp. 177-184, 2007.
  38. Luangvilai, K., Jacobs, L.J., and Qu, Jianmin "An improved technique for modal decomposition of a double-mode Lamb wave signal," presented at the 13th Annual International Symposium on Smart Structures and Materials, San Diego, California, February, 2006, SPIE Proceedings 6176, pp. 145-154, 2006.
  39. Luangvilai, K., Jacobs, L.J., and Qu, J. "Modal decomposition of double-mode Lamb waves," presented at 32nd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 31-August 5, 2005, 633-640 Vol. 25A, 2006.
  40. Herrmann, J., Jacobs, L.J., Qu, J. and Kim, J.-Y., "Generation and detection of higher harmonics in Rayleigh waves using laser ultrasound," presented at 32nd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 31-August 5, 2005, 262-269, Vol. 25A, 2006.
  41. Punurai, W., Jacobs, L.J., Kurtis, K., Jarzynski, J., and Qu, Jianmin, "Characterization of entrained air voids using scattered ultrasound," presented at 32nd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 31-August 5, 2005, pp. 1335-1342, Vol. 25B, 2006.
  42. Mueller, T.O., Kim, J-Y, Qu, J. and Jacobs, L.J., "Nonlinear acoustic measurements and Rayleigh waves," presented at 32nd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 31-August 5, 2005, pp. 291-296, Vol. 25A, 2006.
  43. Luangvilai, K., Jacobs, L.J., and Qu, Jianmin "Modal decomposition of double-mode Lamb waves: Numerical verification and discussion on extension to multi-mode Lamb waves," presented at the 12th Annual International Symposium on Smart Structures and Materials, San Diego, California, February, 2005, SPIE Proceedings 5768, pp. 304-312, 2005.
  44. Kreuzinger, T., Hurlebaus, S., Michaels, J.E., and Jacobs, L.J., "A modeling approach to interpret the dispersion relationship for piezoelectric sources," presented at 31st Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 26- 30, 2004, pp. 196-202, Vol. 24A, 2005.
  45. Kotte, O., Niethammer, M., and Jacobs, L.J., "Differential reassignment for Lamb wave characterization," presented at 31st Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 26- 30, 2004, pp. 120-125, Vol. 24A, 2005.
  46. Luangvilai, K., Jacobs, L.J., Wilcox, P.D., Lowe, M.J.S., and Qu, Jianmin "Broadband Attenuation Measurement for an Absorbing Plate," presented at 31st Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 26- 30, 2004, pp. 297-304, Vol. 24A, 2005.
  47. Punurai, W., Jacobs, L.J., Kurtis, K., and Jarzynski, J. "Characterization of the microstructure of cement-based materials using ultrasonic attenuation," presented at 31st Annual Review of Progress in Quantitative Nondestructive Evaluation, Golden, Colorado, July 26- 30, 2004, pp. 1431-1438, Vol. 24B, 2005.
  48. Luangvilai, K., Jacobs, L.J., Wilcox, P., Lowe, M.J.S., and Qu, Jianmin "Characterization of Lamb Waves in Absorbing Plates," presented at the 11th Annual International Symposium on Smart Structures and Materials, San Diego, California, March 14-18, 2004, SPIE Proceedings 5394, pp.33-41, 2004.
  49. Pinto, P., Hurlebaus, S., Gaul, L. and Jacobs, L. J. "Localization and Sizing of Discontinuities using Lamb Waves," Structural Health Monitoring - The Demands and Challenges, edited by Fuo-Kuo Chang, Destech Publishing, 2003.
  50. Luangvilai, K., Jacobs, L.J. and Qu, Jianmin "Far-field Decay of Laser-Generated Axisymmetric Lamb Waves," presented at the 30th Annual Review of Progress in Quantitative Nondestructive Evaluation, Green Bay, Wisconsin, July 27-August 3, 2003, pp. 158-164, Vol. 23A, 2004.
  51. Blum, F., Jarzynski, J., and Jacobs, L.J., "A Focused, Two-dimensional Air Coupled Ultrasonic Array for Non-contact Generation," presented at the 30th Annual Review of Progress in Quantitative Nondestructive Evaluation, Green Bay, Wisconsin, July 27-August 3, 2003, pp. 834-839, Vol. 23A, 2004.
  52. Junge, M., Qu, J., Jarzynski, J., LaSaponara, V. and Jacobs, L.J., "The Measurement of Residual Stresses using the Polarization of Rayleigh Waves," presented at the 30th Annual Review of Progress in Quantitative Nondestructive Evaluation, Green Bay, Wisconsin, July 27-August 3, 2003, pp. 1187-1191, Vol. 23B, 2004.
  53. Kang, J., Qu, J., Saxena, A. and Jacobs, L.J., "On the Detection of Creep Damage in a Directionally Solidified Nickel Base Superalloy using Nonlinear Ultrasound," presented at the 30th Annual Review of Progress in Quantitative Nondestructive Evaluation, Green Bay, Wisconsin, July 27-August 3, 2003, pp. 1248-1255, Vol. 23B, 2004.
  54. Luangvilai, K., Jacobs, L.J. and Qu, Jianmin, "Propagation of guided Lamb waves in concrete repaired with composite plates," presented at the 10th Annual International Symposium on Smart Structures and Materials, San Diego, California, March 3-6, 2003, SPIE Proceedings 5057, pp. 85-90, 2003.
  55. Punurai, W. and Jacobs, L.J., "Ultrasonic Methodology to Characterize the State of Cure," presented at 29th Annual Review of Progress in Quantitative Nondestructive Evaluation, Bellingham, Washington July 15- 19, 2002, Vol. 22B, pp. 1509-1515, 2003.
  56. Luangvilai, K. and Jacobs, L.J., "Characterization of Attenuation in Lamb Waves using Laser Ultrasonic Techniques," presented at 29th Annual Review of Progress in Quantitative Nondestructive Evaluation, Bellingham, Washington July 15- 19, 2002, Vol. 22B, pp. 1509-1515, 2003.
  57. Luangvilai, K. and Jacobs, L.J., "Characterization of Repaired Concrete with Guided Lamb Waves," presented at EM2002 - the 15th ASCE Engineering Mechanics Conference, New York, NY, May 2002.
  58. Hurlebaus, S., Gaul, L. and Jacobs, L. J. "Localization of Acoustic Emission Signals of a Fatigue Specimen Using Laser Ultrasonics," Structural Health Monitoring - The Demands and Challenges, edited by Fuo-Kuo Chang, CRC Press, pp. 1219-1228, 2001.
  59. Luangvilai, K., Punurai, W. and Jacobs, L.J., "Lamb Wave Techniques to Characterize Repaired Concrete," presented at 28th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 30-August 3, 2001, Vol. 21B, pp. 1369-1376, 2002.
  60. Stolzenburg, C., Jacobs, L.J. and Jarzynski, J., "Non-contact System to Measure the Material Properties of a Layered Viscoelastic Medium," presented at 28th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 30-August 3, 2001, Vol. 21B, pp. 1415-1422, 2002.
  61. Maess, M., Jacobs, L.J. and Qu, J., "Material Characterization using Nonlinear Wave Propagation," presented at 28th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 30-August 3, 2001, Vol. 21B, pp. 1369-1376, 2002.
  62. Hughes, M., Jacobs, L.J. and Rix, G.J., "Nondestructive Determination of Unknown Pile-Tip Elevations using Modal Analysis," presented at 27th Annual Review of Progress in Quantitative Nondestructive Evaluation, Ames, Iowa, July 17-21, 2000, Vol. 20B, pp. 1186-1193, 2001.
  63. Meurer, T., Jacobs, L.J. and Qu, J., "Application of Nonlinear Ultrasonic Waves to Characterize Hysteretic Materials," presented at 27th Annual Review of Progress in Quantitative Nondestructive Evaluation, Ames, Iowa, July 17-21, 2000, Vol. 20B, pp. 1242-1247, 2001.
  64. Seifried, R., Jacobs, L.J. and Qu, J., "Characterization of Adhesive Bond Properties with Lamb Waves," presented at 27th Annual Review of Progress in Quantitative Nondestructive Evaluation, Ames, Iowa, July 17-21, 2000, Vol. 20B, pp. 1074-1081, 2001.
  65. Shi, Z., Jarzynski, J. and Jacobs, L.J., "Study of Acoustic Emission in a Plate using Laser Ultrasonics and the Finite Element Method," presented at 27th Annual Review of Progress in Quantitative Nondestructive Evaluation, Ames, Iowa, July 17-21, 2000, Vol. 20B, pp. 1761-1767, 2001.
  66. Eisenhardt, C., Jacobs, L.J. and Qu, J., "Experimental Lamb Wave Spectra of Cracked Plates," presented at 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, Montr
  67. Valle, C., Qu, J. and Jacobs, L.J., "Scattering of Circumferential Waves in a Cracked Annulus," presented at 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, Montr
  68. Niethammer, M., Jacobs, L.J. and Qu, J., "Application of STFT Techniques to Interpret Ultrasonic Signals," presented at 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, Montr
  69. Shi, Z., Jarzynski, J. and Jacobs, L.J., "Quantitative Acoustic Emission from Fretting Fatigue of PH 13-8 Stainless Steel," presented at 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, Montr
  70. Dokun, D., Jacobs, L.J. and Haj-Ali, R., "Application of Laser Ultrasonics to Monitor Material Degradation in FRP Composites," presented at 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, Montr
  71. Owino, J. and Jacobs, L.J., "Characterization of Rayleigh Wave Attenuation in Concrete using Laser Ultrasonics," presented at the ASCE Engineering Mechanics Conference, Baltimore, Maryland, June 13-16, 1999, Engineering Mechanics, 1999.
  72. Dokun, D., Jacobs, L.J. and Haj-Ali, R., "Ultrasonic Techniques to Quantify Material Degradation in FRP Composites," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18B, pp. 1365-1371, 1999.
  73. Kley, M., Valle, C., Jacobs, L.J. and Qu, J., "Development of Dispersion Relationships for Layered Cylinders using Laser Ultrasonics," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18A, pp. 263-268, 1999.
  74. Valle, C., Qu, J. and Jacobs, L.J., "On the Dispersion and Displacement Distribution of Circumferential Waves in Composite Circular Cylinders," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18A, pp. 247-253, 1999.
  75. Liu, G., Qu, J. and Jacobs, L.J., "Characterizing Adhesive Curing by Nonlinear Ultrasonic Techniques," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18B, pp. 2191-2199, 1999.
  76. Owino, J. and Jacobs, L.J., "Measurement of Rayleigh Wave Attenuation in Concrete using Laser Ultrasonics," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18B, pp. 1919-1925, 1999.
  77. Shi, Z., Bair, S., Jarzynski, J. and Jacobs, L.J., "Study of Acoustic Emission from Incipient Fatigue Failure," presented at the 25th Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowbird, Utah, July 19-24, 1998, Vol. 18A, pp. 395-401, 1999.
  78. Hughes, M., Rix, G. and Jacobs, L.J., "Nondestructive Determination of Pile Tip Elevation Using Modal Analysis," Structural Materials Technology III: An NDT Conference, San Antonio, Texas, March 31-Apr 3, 1998, pp.
  79. Moser, F., Jacobs, L.J. and Qu, J., "Application of Finite Element Methods to Study Transient Wave Propagation in Elastic Wave-Guides," presented at the 24th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, 1997, Vol. 17A, pp. 161-167, 1998.
  80. Owino, J. and Jacobs, L.J., "Characterization of Rayleigh Wave Propagation in Concrete using Laser Ultrasonics," presented at the 24th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 28-August 1, 1997, Vol. 17B, pp. 1545-1550, 1998.
  81. Shi, Z., Koutsak, M., Bair, S., Jarzynski, J. and Jacobs, L.J., "Characterization of Acoustic Emission Signals from Fracture Events," presented at the 24th Annual Review of Progress in Quantitative Nondestructive Evaluation, San Diego, California, July 28-August 1, 1997, Vol. 17A, pp. 565-570, 1998.
  82. Hurlebaus, S., Jacobs, L.J. and Jarzynski, J., "Optical Techniques to Develop Transfer Functions to Remove Geometric Features in Acoustic Emission Signals," presented at the 23rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 29-August 3, 1996, Vol. 16A, pp. 421-426, 1997.
  83. Owino, J. and Jacobs, L.J., "Experimental and Theoretical Investigation of Interfacial Loses in Concrete with Laser Ultrasonics," presented at the 23rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 29-August 3, 1996, Vol. 16A, pp. 547-554, 1997.
  84. Littles, J.W., Jacobs, L.J. and Zurieck, A.H., "Characterization of Structural Composites for Highway Applications," presented at the 23rd Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 29-August 3, 1996, Vol. 16B, pp. 1807-1814, 1997.
  85. Littles, J.W., Jacobs, L.J. and Zureick, A.H., "Ultrasonic Characterization of FRP Composites for Bridge Applications," presented at the ASCE Engineering Mechanics Division Conference, Fort Lauderdale, Florida, May 1996, Engineering Mechanics, Vol. 2, pp. 959-962, 1996.
  86. Bruttomesso, D.A. and Jacobs, L.J., "Optical Techniques to Examine Scattering of Rayleigh Surface Waves," presented at the 22nd Annual Review of Progress in Quantitative Nondestructive Evaluation, Seattle, Washington, July 30-August 4, 1995, Vol. 15A, pp. 651-656, 1996.
  87. Jacobs, L.J. and Bruttomesso, D.A., "Investigation of Scattering Losses in Concrete using Laser Ultrasonics," presented at the ASCE Engineering Mechanics Division Conference, Boulder, Colorado, May 1995, Engineering Mechanics, pp. 445-448, 1995.
  88. Littles, J.W., Jacobs, L.J. and Zurieck, A.H., "Development of Nondestructive Evaluation Techniques for the Characterization of FRP Components," presented at the ASCE Structures Congress 95, Boston, Massachusetts, April 3-5, 1995, Structures Congress XIII, Vol. 1, pp. 696-699, 1995.
  89. Jacobs, L.J. and Bruttomesso, D.A., "Investigation of Interfacial Losses in Concrete with Laser Ultrasonics," presented at the 21st Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowmass, Colorado, July 31-August 5, 1994, Vol. 14A, pp. 537-543, 1995.
  90. Littles, J., Jacobs, L.J., and Zurieck, A. -H., "Nondestructive Characterization of FRP Composites with Applications for Highway Structures," presented at the 21st Annual Review of Progress in Quantitative Nondestructive Evaluation, Snowmass, Colorado, July 31-August 5, 1994, Vol. 14A, pp. 2209-2214, 1995.
  91. Jacobs, L.J., "Laser Generation and Detection of Ultrasound in Concrete," presented at the ASCE Structures Congress 94, Atlanta, Georgia, April 24-28, 1994, Structures Congress XII, pp. 1328-1333, 1994.
  92. Jacobs, L.J. and Johnson, H.T., "Laser Ultrasonic Methods for the Nondestructive Evaluation of Concrete," presented at the 20th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, August 1-6, 1993, Vol. 13A, pp. 501-508, 1994.
  93. Littles, J., Jacobs, L.J., and Qu, Jianmin, "Laser Interferometric Investigation of Scattering from a Distribution of Cracks," presented at the 20th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, August 1-6, 1993, Vol. 13A, pp. 61-68, 1994.
  94. Jacobs, L.J. and Whitcomb, R., "Laser Ultrasonic Evaluation of Concrete," presented at First Joint ASCE/ASME/SES Mechanics Conference, Charlottesville, VA, June 7-10, 1993 Mechanics of Materials and Structures, Proceedings of the Symposium in Honor of Professor Maciej P. Bieniek at the ASCE-ASME-SES Joint Meeting, pp. 73-86,1994.
  95. Whitcomb, R., Jacobs, L.J. and Aref, L., "Quantitative Ultrasonic Evaluation of Concrete," presented at Nondestructive Testing of Concrete in the Infrastructure, 1993 SEM Conference, Dearborn, MI, June 9-12, 1993, pp. 238-255.
  96. Jacobs, L.J., and Qu, Jianmin, "Nondestructive Characterization of Damaged Bonds," presented at the 19th Annual Review of Progress in Quantitative Nondestructive Evaluation, La Jolla, California, July 19-24, 1992, Vol. 12B, pp. 1587-1594, 1993.
  97. Bruttomesso, D.A. and Jacobs, L.J., "Laser Interferometric Characterization of Acoustic Emission Transducers," presented at the ASCE Engineering Mechanics Conference, College Station, Texas, 1992, Engineering Mechanics, pp. 256-259, 1992.
  98. Jacobs, L.J., and Qu, Jianmin, "Reflection of Elastic Waves by a Traction-Free Surface with Small Defects," presented at the 18th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 29- August 2, 1991, Vol. 11B, pp. 1609-1617, 1992.
  99. Jacobs, L.J., "Characterization of Acoustic Emission Signals," presented at ASCE Engineering Mechanics Conference, Columbus, Ohio, May 19-22, 1991, Mechanics Computing in 1990's and Beyond, pp. 949-953, 1991.
  100. Lee, Xiaogong, Jacobs, L.J., and Bieniek, M.P., "Crack Initiation and Arrest under Dynamic Loading," presented at the 17th Annual Review of Progress in Quantitative Nondestructive Evaluation, La Jolla, California, July 15-20, 1990, Vol. 10B, pp. 1883-1889, 1991.
  101. Jacobs, L.J., "Analytical and Experimental Characterization of Acoustic Emission Signals," presented at the 15th Southeastern Conference of Applied Mechanics, Atlanta, Georgia, February 1-3, 1990, Developments in Theoretical and Applied Mechanics, Vol. 16, pp. 236-243, 1990.
  102. Jacobs, L.J., Scott, W.R. and Granata, D.M., "Calculation of Acoustic Emission Signatures from Growing Cracks," presented at the 69th Meeting of the AGARD Structures and Materials Panel, Brussels, Belgium, October 1-6, 1989, Impact of Emerging NDE-NDI Methods on Aircraft Design, Manufacture and Maintenance, AGARD-CP-462, pp. 23-1 through 23-7, 1990.
  103. Jacobs, L.J., Scott, W.R., Granata, D.M., and Ryan, M.J., "Acoustic Emission Signal from a Crack Growth Event," presented at the 16th Annual Review of Progress in Quantitative Nondestructive Evaluation, Brunswick, Maine, July 24-28, 1989, Vol. 9B, pp. 1749-1756, 1990.
  104. Jacobs, L.J., "Acoustic Emission from a Growing Crack," presented at AIAA/ASME/ASCE/AHS/ASC 30th Structures, Structural Dynamics and Materials Conference, Mobile, Alabama, April 3-5, 1989, Research in Structures, Structural Dynamics and Materials, NASA Conference Publication 10024, pp. 67-76, 1989.
  105. Jacobs, L.J., Scott, W.R., Granata, D.M., and Ryan, M.J. "Acoustic Emission from a Crack Growth Event," presented at the 15th Annual Review of Progress in Quantitative Nondestructive Evaluation, La Jolla, California, August 1-5, 1988, Vol. 8B, pp. 1811-1818, 1989.
  106. Jacobs, L.J., Lee, Xiaogong, and Bieniek, M.P., "Two Problems in Dynamic Fracture Mechanics," presented at AIAA/ASME/ASCE/AHS/ASC 29th Structures, Structural Dynamics and Materials Conference Williamsburg, Virginia, April 18-20, 1988, AIAA-88-2385, pp. 1357-1363, 1988.

Patents

  1. Method for Measuring Reactor Bed Level from Active Acoustic Measurement and Analysis, Pending 6/20/08, RDH-0715, USSN 61/132,647.
  2. Air Void Characterization in Cement Based Materials, Provisional Disclosure GTRC 4938 7/18/2009

Presentations

  1. Bundesanstalt fur Materialforschung, “Quantitative characterization of civil infrastructure using ultrasonic techniques,” Berlin Germany, December 2010.
  2. 2010 USNCTAM "Higher order harmonics and their applications in nondestructive damage assessment in metallic structures," State College Pennsylvania, June 2010.
  3. SAMPE "Measuring surface stress using nonlinear ultrasound," Seattle Washington, May 2010.
  4. Seoul National University, "Characterization of fatigue damage in metals with nonlinear ultrasound," September 2008 (Invited).
  5. KAIST, "Characterization of fatigue damage using nonlinear ultrasound," September 2008 (Invited).
  6. AFRL, "Characterization of fatigue damage in a nickel-base superalloy using nonlinear ultrasonic waves," May 2007 (Invited).
  7. 2007 ICU Vienna "Nondestructive characterization of fatigue damage with nonlinear ultrasound," Vienna Austria April, 2007.
  8. Texas A&M University, "Characterization of damage using nonlinear ultrasound," December 2006 (Invited).
  9. 2006 USNCTAM "Nondestructive characterization of fatigue damage in a nickel-base superalloy with nonlinear ultrasound," Boulder Colorado June, 2006.
  10. Louisiana State University, "Quantitative Nondestructive Evaluation of Civil Infrastructure," November 2005 (Invited).
  11. Carnegie-Mellon University, "Quantitative Nondestructive Evaluation of Civil Infrastructure," September 2005 (Invited).
  12. University of Stuttgart, "Characterization of Lamb Waves in Viscoelastic Plates," June 2005 (Invited).
  13. University of Stuttgart COMMAS Program, "Wave Propagation in Solids with Applications for NDE," September 2003 (Invited).
  14. University of Stuttgart "Guided Lamb Wave Propagation in a Concrete Component Repaired with an FRP Composite Plate," June 2002 (Invited).
  15. 2001 Mechanics and Materials Conference "Lamb Wave Techniques to Characterize Repaired Concrete," San Diego California, June, 2001.
  16. University of Maine, Orono "Characterization of Cement-Based Materials using Laser Ultrasonics," November 2000 (Invited).
  17. 139th Meeting Acoustical Society of America "Study of Acoustic Emission in a Plate using Laser Ultrasonics and the Finite Element Method," Atlanta, Georgia, May 2000.
  18. 2000 ASNT Technical Meeting "Characterization of Bond Degradation using guided Waves," Birmingham, Alabama, April 2000.
  19. 1999 ASME International Mechanical Engineering Congress and Exposition (IMECE) "Crack Detection using Guided Waves," Nashville, TN, November 1999.
  20. Columbia University, "Characterization of Civil Engineering Materials with Laser Ultrasonic Techniques," October 1999 (Invited).
  21. University of Buenos Aires, "Characterization of Civil Engineering Materials with Acoustic Emission and Ultrasonic Techniques" September 1999 (Invited).
  22. First Meeting of the Latin American Acoustic Emission Group (E-GLEA 1) "Wave propagation in cement-based materials," Buenos Aires, Argentina, September 1999 (Invited).
  23. 138th Meeting Acoustical Society of America "Detection of cracks in plates using guided waves," Columbus, Ohio, November 2, 1999.
  24. Thirteenth U.S. National Congress of Applied Mechanics "Guided circumferential waves in layered annular structures," Gainesville, Florida, June 26, 1998.
  25. Thirteenth U.S. National Congress of Applied Mechanics "Measurement of attenuation in cement-based materials using laser ultrasonics," Gainesville, Florida, June 26, 1998.
  26. 1997 ASME International Mechanical Engineering Congress and Exposition (IMECE) "Characterization of Acoustic Waveforms from Fracture Events," Dallas, TX, November 16, 1997.
  27. Max-Planck-Society, Rottach-Egern, Germany, International Workshop on Materials Research with Advanced Acoustic Emission Techniques, "Transfer Functions to Remove Geometry Effects from Acoustic Emission Signals," October 1996 (Invited).
  28. University of Missouri, Columbia, "Laser Ultrasonics in Concrete," April 1995 (Invited).
  29. Twelfth U.S. National Congress of Applied Mechanics "Measurement of Ultrasound Attenuation in Concrete using Laser Ultrasonics," Seattle, Washington, June 27-July 1, 1994.
  30. The Catholic University of America, "Optical Techniques for the Nondestructive Characterization of Concrete," November 1994 (Invited).
  31. Johns Hopkins University, "Optical Techniques for the Nondestructive Characterization of Infrastructure," September 1994 (Invited).
  32. University of Delaware, "Acoustic Emission Techniques for the Evaluation of Composite Materials," May 1988 (Invited).