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Education

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

Background

Dr. Jacobs began at Tech in 1988 as an Assistant Professor after serving as a Postdoctoral Fellow at the Naval Air Development Center in Warminster, Pennsylvania. He was promoted to Associate Professor with tenure in 1994 and to Professor in 2000. He is currently the Associate Dean for Academic Affairs in the Georgia Tech College of Engineering, a role he has held since 2007. He has also served as interim dean on two occasions and has a joint appointment to the School of Civil and Environmental Engineering. 

Research

Professor Jacobs’ research focuses on the development of quantitative methodologies for the nondestructive evaluation and life prediction of structural materials. This includes the application of nonlinear ultrasound for the characterization of fatigue, creep, stress-corrosion, thermal embrittlement and radiation damage in metals. His work in cement-based materials includes the application of linear and nonlinear ultrasonic techniques to quantify microstructure and progressive micro-cracking in concrete. 

Dr. Jacobs’ publications have been cited more than 8600 times with an h-index of 48 (Google Scholar), 41 (Scopus) or 39 (Web of Science) and he is a Fellow of the ASME. Professor Jacobs’ research has been funded by DOE, NSF, ONR, AFOSR, DARPA, NASA, US DOT, Georgia DOT, Exxon-Mobil, EPRI, Sandia National Labs, ARPA-E and GE. He has been the PI or co-PI on over $6.8M worth of contracts since 1990. Dr. Jacobs has graduated 19 Ph.D. students (6 women and 2 African Americans) and 65 M.S. thesis students. 

  • SPIE 2019 NDE Lifetime Achievement Award Winner, 2019
  • Fellow of the American Society of Mechanical Engineers, 2014
  • Sigma Xi (Georgia Tech Chapter) Best Faculty Paper Award (with Jianmin Qu), 2007
  • American Society of Civil Engineers Journal of Engineering Mechanics Associate Editor, 2000-2002
  • Institution of Mechanical Engineers (UK) Water Arbitration Prize (for paper authored with Y. Berthelot and J. Qu), 2000
  • Georgia Institute of Technology
    • ANAK Award, 1998
    • Class of 1940 W. Roane Beard Outstanding Teacher Award, 1993
    • Outstanding Teacher Award, 1991
    • Center for the Enhancement of Teaching and Learning/Amoco Junior Faculty Teaching Excellence Award, 1991
  • Lilly Foundation Teaching Fellowship, 1990

Representative Publications

  • Bellotti*, A, Kim, Jin-Yeon, Bishop, J.E., Jared, B.H., Johnson, K., Susan, D., and Jacobs, L.J., “Nonlinear ultrasonic technique for the characterization of microstructure in additive materials,” Journal of the Acoustical Society of America, Vol. 149 (1), pp. 158-166, 2021.

  • Levy*, K.M.S., Kim, Jin-Yeon, and Jacobs, L.J., “Variations of classical and nonclassical ultrasound nonlinearity parameters during heat-induced microstructural evolution in a Fe-Cu alloy,” Materials Evaluation, 79 (5) 465-471, 2021.

  • Rodriguez-Herrejon, V.M., Ruiz, A, Rubio-Gonzalez, C., Lopez-Morelos, V.H., Kim, Jin-Yeon, and Jacobs, L.J., “Nonlinear surface wave measurements on aged and laser shock surface-treated Inconel 718 superalloy,” NDT&E International, Vol. 121, 102457, 2021.

  • .Levy*, K.M.S., Kim, Jin-Yeon, and Jacobs, L.J., “Investigation of the relationship between classical and nonclassical ultrasound nonlinearity parameters and microstructural mechanisms in metals,” Journal of the Acoustical Society of America, Vol. 148 (4), pp. 2429-2437, 2020

  • Kim, Jin-Yeon, Wall, J.J, Garner, F.A., and Jacobs, L.J., “Use of combined linear and nonlinear ultrasound to examine microstructural and microchemical variations in highly irradiated 304 stainless steel,” Journal of Nuclear Materials, 545, 152644, 2021.

  • Kim, Jin-Yeon, Wall, J.J, Joo, Y.-S., Park, D.G., and Jacobs, L.J., “Device and method for nonlinear ultrasonic measurements on highly-irradiated 304 stainless steel specimens in a hot cell environment,” Review of Scientific Instruments, Vol. 91, 025103, 2020.

  • Fahse*, D.N., Scott Levy*, K.M., Kim, Jin-Yeon, and Jacobs, L.J., “Comparison of changes in nonclassical and classical acoustic nonlinear parameters due to thermal aging of 9Cr-1Mo ferritic martensitic steel,” NDT&E International, Vol. 110, 102226, 2020.

  • Pfeifer* D., Kim, Jin-Yeon, and Jacobs, L.J., “Nonlinear Rayleigh waves to evaluate plasticity damage in X52 pipeline material,” Mechanical Systems and Signal Processing, Vol. 143, 106794, 2020.

  • Ju, Taeho, Achenbach, J.D., Jacobs, L.J., and Qu, Jianmin, “One-way mixing of collinear waves in an adhesive layer,” Journal of the Acoustical Society of America, Vol. 145 (1), pp. 110-120, 2019.

  • Ju, Taeho, Achenbach, J.D., Jacobs, L.J., and Qu, Jianmin, “Nondestructive evaluation of thermal aging of adhesive joints by using a nonlinear wave mixing technique,” NDT&E International, Vol. 103, pp. 62-67, 2019.

  • Maier*, S., Kim, Jin-Yeon, Forstenhausler*, M., Wall, J.J. and Jacobs, L.J., “Noncontact nonlinear resonance ultrasound spectroscopy (NRUS) for small metallic specimens,” NDT&E International, Vol. 98, pp. 37-44, 2018.

  • Kim*, Gun, Park*, S. Kim, Jin-Yeon, Kurtis, K.E., Hayes, N. and Jacobs, L.J. “Nonlinear Rayleigh Surface Waves to Characterize Microscale Damage due to Alkali-Silica Reaction (ASR) in Full-Scale, Nuclear Concrete Specimens,” Construction and Building Materials, Vol. 186, pp. 1114-1118, 2018.

  • Gutierrez-Vargas, G., Ruiz, A., Kim, Jin-Yeon and Jacobs, L.J., “Characterization of thermal embrittlement in 2507 super duplex stainless steel using nonlinear acoustic effects,” NDT&E International, Vol. 94, pp. 101- 108, 2018.

  • Scott*, K., Kim, Jin-Yeon and Jacobs, L.J., “Signal processing methods for second harmonic generation in thin specimens,” NDT&E International, Vol. 95, pp. 57-64, 2018.

  • Kim*, Gun, Loreto, G., Kim, Jin-Yeon, Kurtis, K.E., Wall, J.J., and Jacobs, L.J. “In situ nonlinear ultrasonic technique for monitoring microcracking in concrete subjected to creep and cyclic loading,” Ultrasonics, Vol. 88, pp. 64-71, 2018.

  • Kim*, Gun, Kim, Jin-Yeon, Kurtis, K.E., and Jacobs, L.J. “Monitoring drying shrinkage in hydrated concrete using nonlinear ultrasound,” Cement and Concrete Research, Vol. 92, pp. 16-20, 2017.

  • Torello*, D., Selby*, N., Kim, Jin-Yeon, Qu, Jianmin, and Jacobs, L.J., “Determination of absolute material nonlinearity with air-coupled ultrasonic receivers,” Ultrasonics, Vol. 81, 107-117, 2017.

  • Scott*, K., Kim, Jin-Yeon, Wall, J.J., Park, Duck-Gun and Jacobs, L.J., “Investigation of Fe-1.0% Cu surrogate specimens with nonlinear ultrasound,” NDT&E International, Vol. 89, pp 40-43, 2017.

  • Doerr*, C., Kim, Jin-Yeon, Singh, Preet, Wall, J.J., and Jacobs, L.J., “Evaluation of sensitization in stainless steel 304 and 304L using nonlinear Rayleigh waves,” NDT&E International, Vol. 88, pp. 17-23, 2017.

  • Kim*, Gun, Giannini, Eric, Klenke, Nathan, Kim, Jin-Yeon, Kurtis, K.E., and Jacobs, L.J. “Measuring alkali- silica reaction (ASR) microscale damage in large-scale concrete slab using nonlinear Rayleigh surface waves,” Journal of Nondestructive Evaluation, DOI 10.1007/s10921-017-0410-z 36:29, 2017.

​​​​​​​*Denotes co-author who is a current and/or former undergraduate or graduate research student.