Third harmonic approximate phase velocity matching nonlinear early fatigue damage detection
Measurement(2022)
Abstract
•The third harmonic phase velocity matching is used to achieve early fatigue damage detection.•The relationship between the third harmonic signal and the length of fatigue cracks is shown.•The third harmonic approximate phase velocity matching also enables early fatigue damage detection.
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Key words
Lamb wave,Nonlinear,Third harmonic,Fatigue damage detection
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