Mr. Weihua Huang Profile

Weihua Huang

at Huazhong Univ of Science and Technology

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Simultaneous compositional and defect measurements using laser opto-ultrasonic dual detection for laser 3D printing and welding

Wen Cheng, Yuyang Ma, Weihua Huang

Proceedings Volume 11677, 1167719 (2021) https://doi.org/10.1117/12.2595030

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In order to solve the problem of composite detection for laser welded sample, a laser opto-ultrasonic dual (LOUD) detection, which combined with laser-induced breakdown spectroscopy and laser ultrasonic technology, was used to obtain both elemental composition and defect information simultaneously. In this study, we gathered the atomic emission spectroscopy and ultrasonic time-domain signals from the laser welded sample to analysis the composition and defect information. On this basis, a 40 × 15 mm² LOUD detection scanning was finished to get a visual mapping of silicon element distribution and defect C-scan detection for 2-mm internal hole, respectively. The results showed that the relative errors of element and defect detection with conventional method were 6.00 % and 3.41 %, respectively. We demonstrate that LOUD detection has great potential for laser 3D manufacturing, which makes the detection more efficient.

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