[1] [1] WILSON J W, KABA M M, TIAN G Y, et al. Feature extraction and integration for the quantification of PMFL data［J］. Nondestructive Testing and Evaluation, 2010, 25(2): 101-109.

[2] [2] ZHAO L, LI C J, DUAN Z X, et al. The metal thickness detection using pulsed eddy-current computation and detection method［J］. Cluster Computing, 2019, 22(3): 6551-6562.

[3] [3] GAUL L, SPRENGER H, SCHAAL C, et al. Structural health monitoring of cylindrical structures using guided ultrasonic waves［J］. Acta Mechanica, 2012, 223(8): 1669-1680.

[4] [4] CHEONG Y M, LEE D H, JUNG H K. Ultrasonic guided wave parameters for detection of axial cracks in feeder pipes of PHWR nuclear power plants［J］. Ultrasonics, 2004, 42(1/9): 883-888.

[5] [5] ZENG W, WANG H T, TIAN G Y, et al. Application of laser ultrasound imaging technology in the frequency domain based on Wigner-ville algorithm for detecting defect［J］. Optics & Laser Technology, 2015, 74: 72-78.

[6] [6] ZENG W, QI S K, LIU L, et al. Research on laser-generated Rayleigh waves with angled surface crack by finite element method［J］. Optik, 2019, 181: 57-62.

[7] [7] ZHOU Z G, SUN G K. New progress of the study and application of advanced ultrasonic testing technology［J］. Journal of Mechanical Engineering, 2017, 53(22): 1-10.

[8] [8] NI C Y, DONG L M, SHEN Z H, et al. The experimental study of fatigue crack detection using scanning laser point source technique［J］. Optics & Laser Technology, 2011, 43(8): 1391-1397.

[9] [9] SCHAAL C, SAMAJDER H, BAID H, et al. Rayleigh to lamb wave conversion at a delamination-like crack［J］. Journal of Sound and Vibration, 2015, 353: 150-163.

[10] [10] WANG W, ZHONG Z, PAN Y D. Scattered echo of surface defect in the far field of Rayleigh wave generated by laser［J］. Laser Technology, 2015, 39(2): 157-165.

[11] [11] LIU H, ZHENG B, WANG Z B, et al. Time dependence of laser-induced Rayleigh wave for detecting surface defect depth［J］. Laser & Infrared, 2017, 47(6): 669-673.

[12] [12] WANG Y J, WU Y J, LIU H, et al. An experimental study on depth evaluation of micro-surface crack by laser generated acoustic surface waves［J］. Journal of Applied Acoustics, 2016, 35(1): 36-41.

[13] [13] CLORENNEC D, ROYER D, WALASZEK H. Nondestructive evaluation of cylindrical parts using laser ultrasonics［J］. Ultrasonics, 2002, 40: 783-789.

[14] [14] LIU X K, YANG S X, LIU Y Q, et al. Surface crack identification on a cylinder using the signal enhancement of the scanning laser line source method［J］. Applied Sciences, 2018, 8(10): 1796.