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Delamination characteristics and relationships of CFRP laminates under laser-induced shockwaves with different laser parameters
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DOI：10.1177/07316844261437454.png)
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Abstract
En 中文
Moving beyond conventional reliance on laser power density for damage assessment, this work directly links three key laser parameters-energy, spot diameter, and pulse width-to damage outcomes. Constructed physical response model integrated with Photonic Doppler Velocimetry (PDV) signals introduces a novel parameter, R, to quantify the laminate's residual vibrational energy and damage state. Results show R's clear advantage: it effectively characterizes damage directly from the shock response. The R-energy curve reveals three distinct damage progression stages-linear accumulation, energy absorption saturation, and stable propagation-which are difficult to differentiate and quantify using power density or ultrasonic imaging alone. By establishing the functional relationship F(x, y, z) = R, this study enables damage state prediction for specific laser parameters, validated by ultrasonic B-scanning in T300/AK8210 resin-based carbon fiber reinforcement. This approach facilitates efficient, direct assessment of internal damage in real time, minimizing reliance on post-hoc non-destructive testing. It holds significant potential for optimizing laser shock processes and advancing structural health monitoring of composites.
Keywords:
laminate damage detection
laser shock damage
response model
damage characteristic parameter
Journal
J
IF:
2.2
Papers:
117
Citations:
6.7K
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Cited Papers