Bagging effect of thin aluminum plate under laser irradiation

Binwen Wang; Chunyu Bai; Yu Zhang; Wuming Wu; Houman Jiang

doi:10.1117/12.2649714

14 October 2022 Bagging effect of thin aluminum plate under laser irradiation

Binwen Wang, Chunyu Bai, Yu Zhang, Wuming Wu, Houman Jiang

Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 123430G (2022) https://doi.org/10.1117/12.2649714
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China

Abstract

An experimental system was established to study the 12kW fiber laser irradiation effects on thin LY12-CZ plate. The laser spot on the plate, the change of surface morphology, the change of rear surface temperature as well as the penetration time of the plate were measured. During the laser irradiation, the phenomena of bagging, necking, and perforation were observed on the thin aluminum plate in the irradiated area, which was collectively referred to as the "bagging" effect. In our view, the "bagging" effect is related to the two oxide films formed on the front and rear surfaces of the thin aluminum plate. And a model of molten aluminum flow in a sandwich structure was proposed to analyze the mechanism of the "bagging" effect. The measurement results of the two-color radiation thermometer and the time-of-penetration detector were also consistent with the model and the "bagging" effect.

Citation Download Citation

Binwen Wang, Chunyu Bai, Yu Zhang, Wuming Wu, and Houman Jiang "Bagging effect of thin aluminum plate under laser irradiation", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 123430G (14 October 2022); https://doi.org/10.1117/12.2649714

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