Theoretical Analysis and Testing Research of Stress-Strain of Coating Scratched by Infrared Laser

Sumin, 殷苏民 Yin; Yong, 叶勇 Ye; Aixin, 冯爱新 Feng; Chang, 程昌 Cheng

doi:10.3788/cjl20083509.1423

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Micro-and Nano-scratch Testing1

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2019

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“…The laser scratch or ablation method, just as the name implies, can be implemented by using pulsed light from an infrared (e.g. Nd:YAG) laser to characterize the interface bond strength, B, by detecting the scratch damage using thermography [71][72] [73]. The coating layer absorbing the laser energy is heated and diffuses the heat, so a temperature gradient is formed.…”

Section: Micro-and Nano-scratch Testingmentioning

confidence: 99%

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Advances in test and measurement of the interface adhesion and bond strengths in coating-substrate systems, emphasising blister and bulk techniques

et al. 2019

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In this paper, recent advances in the minimum-destructive testing of the adhesion of coating-substrate systems are reviewed, focusing on key techniques such as micro-and nano-scale levels of indentation, scratching, laser-induced wave shock, as well as the blister and buckle approach. Along with adhesion failure tests, the latest and most extensive applications of the adhesion test methods in nano-, micro-and bulkcoating technology and the associated techniques to determine the minimum damage defects left on the coatings are discussed and their use reviewed.

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Section: Micro-and Nano-scratch Testingmentioning

confidence: 99%

“…a) Force diagram of coating peel-off after scratched by laser[71]; (b) Schematic of Nd-YAG pulse laser active and lock-in thermography for non-destructive testing[72].…”

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confidence: 99%