Experimental research on the induced stress-strain of aluminum alloy 2024 after lasershocking
Feng Aixin1,2 Han Zhenchun1 Nie Guifeng1,3 Xue Wei2 Li Bin1 Shi Fen1 Lu Yi1
1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013;2. School of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035;3. CSR Zhuzhou Electric Company Limited，Zhuzhou 412001
Abstract：In order to study the properties of the metal material’s dynamic stress-strain induced by laser shock wave loading process. 2024 aluminum alloy sheets was shocked by high power laser, STSS-1 stress testing module was applied to collect the dynamic strain signal on the back of the target sheets during laser shock processing, the relative dynamic stress was calculated by using Johnson-Cook constitutive model and the residual stress was measured by XRD. The results indicate that: plasticity of stress wave induced by laser shock wave far outweighs the induced elastic stress wave and materials is mainly in a plastic deformation stage; The stress wave strength in target’s backside becomes stronger as the target’s thickness decreases. The intensity of reflected wave, generated by the stress wave is enhanced in the metal/air interface; The yield strength of 2024 aluminum alloy is about 392MPa in the experiment.
冯爱新;韩振春;聂贵锋;薛伟;李彬;施芬;卢轶. 激光冲击2024 铝合金诱导动态应力应变实验研究[J]. , 2013, 32(14): 200-203.
Feng Aixin;Han Zhenchun Nie Guifeng;Xue Wei Li Bin Shi Fen Lu Yi. Experimental research on the induced stress-strain of aluminum alloy 2024 after lasershocking. , 2013, 32(14): 200-203.
2013, Vol. 32 
