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一、工程实验用偏光弹性仪应具备的性能利用偏振光透视透明模型,测定其内部各点在受有外力情况下所产生的光学各向异性现象,作为应力分析的依据,已很成功的应用到工程上。作为经常的工程材料力学及水工结构力学的大量实验工作所需要的偏光弹性仪,必需具备以下各种性能: 1.它的偏振场直径应不小于200mm,工程材料力学实验的光学模型尺寸一般不超过100mm,但水工结构模型有时需要在150mm以上,因为200公尺的高坝,模型比取到11000,大边尺寸也有200mm,过小的比例是不适宜的。比例取大模型尺寸增加,这样会引起模型的弯曲或变形,厚度为14公
First, the engineering experiment should be equipped with the performance of polarized light polarizing Polarized transparent model, the determination of its internal points under the external force generated by the optical anisotropy, as the basis for stress analysis, has been very successful application To the project. Polarimeter, which is required for a large number of experimental work such as regular mechanical engineering and hydraulic structural mechanics, must possess the following properties: 1. The diameter of its polarization field should not be less than 200mm. The optical model size of mechanical engineering experiment is generally the same Not more than 100mm, but hydraulic structural model sometimes need more than 150mm, because 200 meters high dam, the model to take 11000, the big side size also has 200mm, too small ratio is not appropriate. The larger the model, the larger the model size, which causes the model to bend or deform, with a thickness of 14 km