Evaluation of fatigue damage accumulation in composites via linear and nonlinear guided wave methods

Jinling Zhao, Vamshi Chillara, Hwanjeong Cho, Jinhao Qiu, Cliff Lissenden

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For non-destructive evaluation (NDE) of fatigue damage accumulation in composites, this research proposed a combined linear and a nonlinear ultrasonic guided wave method. For the linear Lamb waves approach, a laser-generation based imaging system (LGBI) is utilized to measure the phase velocities of guided waves in composites. The elastic moduli of the specimen are then obtained by inverting the measured phase velocities using genetic algorithms (GAs). The variation of the above two parameters (phase velocity and elastic moduli), together with the guided wave amplitudes, are then observed during the fatigue process. Nonlinear second harmonics in composites are studied theoretically and numerically. A third-order strain energy function of transversely isotropic materials is expressed by five invariants of the Green-Lagrange strain tensor. Results enable intelligent selection of primary modes for cumulative second harmonics generation. Meanwhile, finite element simulations are conducted to characterize second harmonics in light of the theory.

Original languageEnglish (US)
Title of host publication42nd Annual Review of Progress in Quantitative Nondestructive Evaluation
Subtitle of host publicationIncorporating the 6th European-American Workshop on Reliability of NDE
EditorsLeonard J. Bond, Dale E. Chimenti
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413535
DOIs
StatePublished - Feb 10 2016
Event42nd Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2015, Incorporating the 6th European-American Workshop on Reliability of NDE - Minneapolis, United States
Duration: Jul 26 2015Jul 31 2015

Publication series

NameAIP Conference Proceedings
Volume1706
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other42nd Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2015, Incorporating the 6th European-American Workshop on Reliability of NDE
CountryUnited States
CityMinneapolis
Period7/26/157/31/15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Zhao, J., Chillara, V., Cho, H., Qiu, J., & Lissenden, C. (2016). Evaluation of fatigue damage accumulation in composites via linear and nonlinear guided wave methods. In L. J. Bond, & D. E. Chimenti (Eds.), 42nd Annual Review of Progress in Quantitative Nondestructive Evaluation: Incorporating the 6th European-American Workshop on Reliability of NDE [120007] (AIP Conference Proceedings; Vol. 1706). American Institute of Physics Inc.. https://doi.org/10.1063/1.4940592