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10 May 2024 Impact damage detection utilizing nonlinear scattering features of ultrasonic guided waves
Yanfeng Shen, Shulong Zhou, Flora Hervin, Paul Fromme
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Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 129511U (2024) https://doi.org/10.1117/12.3010897
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States
Abstract
Composite materials play an increasingly important role in renewable energy and aerospace structures. Impact damage can be barely visible and hard to detect, while imposing significant danger to structural safety and reliability. Nonlinear ultrasonic guided wave scattering and mode conversion phenomena in composite panels were investigated. The irregular profiles of the impact damage were implemented in a numerical model to understand the influence from geometric characteristics on the guided wave scattering. Scanning Laser Doppler Vibrometry experiments were performed for comparison with the numerical predictions. Frequency-wavenumber analysis considering the nonlinear information was employed to visualize and quantify the impact damage.
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Yanfeng Shen, Shulong Zhou, Flora Hervin, and Paul Fromme "Impact damage detection utilizing nonlinear scattering features of ultrasonic guided waves", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 129511U (10 May 2024); https://doi.org/10.1117/12.3010897
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KEYWORDS
Waveguides
Damage detection
Scattering
Composites
Ultrasonics
Laser scattering
Nondestructive evaluation
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