Research of spalling on 3003H16 aluminium alloy sheet under laser shock wave

HUANG Li-wei; LONG Kun; HUANG Yu; GUO Hai-ping; FENG Lang; ZHON Jun; MA Rui-jia

doi:10.7510/jgjs.issn.1001-3806.2013.02.032

In order to understand the influence of the technological parameters on spalling, it was analyzed by means of the finite element simulation. The maximum tensile stress instantaneous fracture criterion was used to check spalling happened or not. Then, the experiment of laser shock forming was carried out. The shocked samples were surveyed with a scanning electron microscope. The emerging, developing and forming of the spalling were analyzed. The results show that the spalling is susceptible to the shock region, and then the spot edge. Spalling will never happen outside the shock region. The influence of pulse width, peak pressure and sheet thickness affect the position of spalling significantly. However, the spot diameter affects it little. These have guiding significance to the development of the laser shock forming.

Research of spalling on 3003H16 aluminium alloy sheet under laser shock wave

1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

Received Date: 2012-05-28

Accepted Date: 2012-07-16

Available Online: 2013-03-25

Abstract: In order to understand the influence of the technological parameters on spalling, it was analyzed by means of the finite element simulation. The maximum tensile stress instantaneous fracture criterion was used to check spalling happened or not. Then, the experiment of laser shock forming was carried out. The shocked samples were surveyed with a scanning electron microscope. The emerging, developing and forming of the spalling were analyzed. The results show that the spalling is susceptible to the shock region, and then the spot edge. Spalling will never happen outside the shock region. The influence of pulse width, peak pressure and sheet thickness affect the position of spalling significantly. However, the spot diameter affects it little. These have guiding significance to the development of the laser shock forming.

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Reference (16)

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Research of spalling on 3003H16 aluminium alloy sheet under laser shock wave

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通讯作者: 陈斌, bchen63@163.com

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