Fully noncontact inspection of closed surface crack with nonlinear laser ultrasonic testing method

Kou, X; Pei, CX; Chen, ZM

Pei, CX (corresponding author), 28 West Xianning Rd, Xian, Peoples R China.

ULTRASONICS, 2021; 114 ():

Abstract

Nonlinear ultrasonic testing method is one of few techniques that are effective for evaluating early material degradation and micro-crack initiation b......

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