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在医院里,你见过胸部透视检查吧,当打开机器时,X 射线穿过人体,就会在荧光屏上显示出人体内部结构的影象,医生根据影象就可进行诊断。在工程上,也有一种类似的实验方法,这就是本文所要讲的光弹性。光弹性这种实验方法,操作起来并不复杂。只要打开偏光仪的光源,强烈的光线透过镜头和实验模型(就是被测零件的模型),就会在投影屏上现出一幅彩色的条纹图案或黑白相间的条纹图案。这些奇形怪状的图案,乍一看起来,令人费解。实际上,只要掌握它的规律,就可以全面了解实验对象的受力情况,获得工程设计中许多重要的数据。这种方法直观醒目,所花费用也很有限,因此它已成为工程设计研究人员
In the hospital, you have seen the chest fluoroscopy, when the machine is turned on, X-rays through the human body, will be displayed on the screen of the human body internal structure of the image, the doctor can make the diagnosis based on the image. In engineering, there is a similar experimental method, which is the photoelasticity of this article. Photoelastic This experimental method, it is not complicated to operate. Just open the polarimeter light source, strong light through the lens and experimental model (the model is measured parts), will be in the projection screen to show a color stripe pattern or black and white stripe pattern. These bizarre patterns, at first glance, are puzzling. In fact, as long as its rules are mastered, it is possible to fully understand the stress conditions of the experimental subjects and obtain many important data in engineering design. This method is straightforward and cost-effective, so it has become an engineering design researcher