Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient
Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient
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2018
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Surface and Coatings Technology ; 353 (2018). - pp. 339-345. - ISSN 0257-8972. - eISSN 1879-3347
Abstract
This study explores the feasibility of using laser generated ultrasonic wave to detect the interfacial damage of coating-substrate structure. Two Pearson correlation coefficient based post processing algorithms are respectively modified and used in order to evaluate the damage-induced waveform variation and thus position the damage accurately. In addition, the ultrasonic signals of frequency-domain and time-domain are separately studied to optimize the damage visualization performance of the two approaches. The proposed method helps to facilitate nondestructive examination of laser ultrasonic technique.
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530 Physics
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Damage detection, Coating-substrate structure, Pearson correlation coefficient, Laser ultrasonics
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CHANG, Ying, Dexing YANG, Yuning GUO, 2018. Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient. In: Surface and Coatings Technology. 353, pp. 339-345. ISSN 0257-8972. eISSN 1879-3347. Available under: doi: 10.1016/j.surfcoat.2018.09.005BibTex
@article{Chang2018-11Laser-44338, year={2018}, doi={10.1016/j.surfcoat.2018.09.005}, title={Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient}, volume={353}, issn={0257-8972}, journal={Surface and Coatings Technology}, pages={339--345}, author={Chang, Ying and Yang, Dexing and Guo, Yuning} }
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