Measurement of laser-induced dynamic strain on 2024 aluminum alloy surface

Feng Aixin; Shi Fen; Han Zhenchun; Xue Wei; Li Bin; Yang Run; Lu Yi

Volume 25 Issue 04

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(04): 872-874

deng caibo, chen jiabin, wu yuchi, et al. Diagnosing neutron yield for interaction of laser-cluster in SILEX-I[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

Feng Aixin, Shi Fen, Han Zhenchun, et al. Measurement of laser-induced dynamic strain on 2024 aluminum alloy surface[J]. High Power Laser and Particle Beams, 2013, 25: 872-874.

deng caibo, chen jiabin, wu yuchi, et al. Diagnosing neutron yield for interaction of laser-cluster in SILEX-I[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

Feng Aixin, Shi Fen, Han Zhenchun, et al. Measurement of laser-induced dynamic strain on 2024 aluminum alloy surface[J]. High Power Laser and Particle Beams, 2013, 25: 872-874.

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Measurement of laser-induced dynamic strain on 2024 aluminum alloy surface

Feng Aixin^1,2,
Shi Fen^{1
,
,},
Han Zhenchun¹,
Xue Wei²,
Li Bin¹,
Yang Run¹,
Lu Yi¹

1.
School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;
2.
College of Mechanical and Electrical Engineering,Wenzhou University,Wenzhou 325035,China

Received Date: 2012-08-21
Rev Recd Date: 2012-10-16
Publish Date: 2013-03-09

Abstract

Abstract

Polyvinylidene fluoride (PVDF) patch sensors were pasted beside the laser shock spot to measure the dynamic strain on the 2024 aluminum alloy surface induced by pulse lasers, and then the characteristics of the dynamic strain curves were analyzed. The results indicate that PVDF patch sensors have the characteristics of quick dynamic response and high sensitivity, and can be applied effectively to real-time measurement of laser-induced dynamic strain. During laser shock processing, the material around the shock spot of 2024 aluminum alloy is compressed first, then the compressive strain decreases. After laser shock processing, the surface particles around the shock spot of 2024 aluminum alloy are doing reciprocating motion constantly under the action of unloading rarefaction wave and surface rarefaction wave. The material around the shock spot is even in the tension. Finally, the dynamic response of the surface particles tends to stability.
- pulse laser,
- polyvinylidene fluoride,
- 2024 aluminum alloy,
- dynamic strain

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