L
Laurence J. Jacobs
Researcher at Georgia Institute of Technology
Publications - 285
Citations - 7548
Laurence J. Jacobs is an academic researcher from Georgia Institute of Technology. The author has contributed to research in topics: Ultrasonic sensor & Rayleigh wave. The author has an hindex of 43, co-authored 279 publications receiving 6636 citations. Previous affiliations of Laurence J. Jacobs include Columbia University & ExxonMobil.
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Modeling elastic wave propagation in waveguides with the finite element method
TL;DR: In this article, the authors used a commercial finite element (FE) code to study the propagation characteristics of ultrasonic waves in annular structures and demonstrated the potential of the FE method for problems when an analytical solution is not possible because of complicated component geometry.
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Experimental characterization of fatigue damage in a nickel-base superalloy using nonlinear ultrasonic waves
TL;DR: In this article, the authors developed a robust experimental procedure to track the evolution of fatigue damage in a nickel-base superalloy with the acoustic nonlinearity parameter, β, and demonstrates its effectiveness by making repeatable measurements of β in multiple specimens, subjected to both high and low-cycle fatigue.
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Review of Second Harmonic Generation Measurement Techniques for Material State Determination in Metals
TL;DR: In this article, the authors present a comprehensive review of the current state of knowledge of second harmonic generation (SHG) measurements, a subset of nonlinear ultrasonic non-destructive evaluation techniques.
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Time-frequency representations of Lamb waves.
TL;DR: The utility of using TFRs to quantitatively resolve changes in the frequency content of these nonstationary signals, as a function of time, is illustrated.
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Assessment of material damage in a nickel-base superalloy using nonlinear Rayleigh surface waves
TL;DR: In this article, the second order harmonic amplitude of a Rayleigh surface wave propagating in metallic specimens is measured using a laser-based ultrasonic technique, and the results show that there is a significant increase in the second-order harmonic amplitude at monotonic tensile loads above the material's yield stress.