1.试验目的 1.通过光弹技术测定活塞头方案在机械负荷下的应力分布规律,以便能事先避免应力集中点的出现。 2.在活塞正式安装到柴油机前,我们还进行了静压试验,这是通过应变片电测法进行的。本次试验的第2个目的是和电测法进行比较。 2.试验方法采用三向光弹冻结切片法。模型用光弹性 1. The purpose of the experiment 1. Through the photoelasticity of the piston head program to determine the stress distribution under mechanical load in order to avoid the emergence of stress concentration point in advance. 2. Before the piston was installed on the diesel engine, we also carried out the static pressure test, which is carried out by the strain gauge electrical measurement method. The second purpose of this test is to compare with electrical measurements. 2. Test methods using three-way photoelastic freezing slice method. The model is photoelastic