Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient
| Type of Publication: | Journal article |
| Publication status: | Published |
| Author: | Chang, Ying; Yang, Dexing; Guo, Yuning |
| Year of publication: | 2018 |
| Published in: | Surface and Coatings Technology ; 353 (2018). - pp. 339-345. - ISSN 0257-8972. - eISSN 1879-3347 |
| DOI (citable link): | https://dx.doi.org/10.1016/j.surfcoat.2018.09.005 |
| Summary: |
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.
|
| Subject (DDC): | 530 Physics |
| Keywords: | Damage detection, Coating-substrate structure, Pearson correlation coefficient, Laser ultrasonics |
| Refereed: | Unknown |
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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.2018.09.005
@article{Chang2018-11Laser-44338, title={Laser ultrasonic damage detection in coating-substrate structure via Pearson correlation coefficient}, year={2018}, doi={10.1016/j.surfcoat.2018.09.005}, 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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