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本文介绍一种测量金属变形的光电应变计,以及关于仪器的使用结果。仪器的工作原理用简图(图1)来说明。从热炽灯或其它光源来似光通量φ照射在试样1的测量基面以及进行基面边缘的照明。边缘图形被物镜2投影在电动机驱转的扫描盘3和开缝光阑5之间的平面内。在不透光扫描盘上刻有阿基米德螺旋线形多圈透明窄缝。园盘螺旋线缝与光阑直线缝的交点形成孔径,园盘转动时,孔径沿测
This article describes a photoelectric strain gauge that measures metal deformation, as well as the results of using the instrument. The working principle of the instrument is illustrated in simplified diagram (Figure 1). From the incandescent lamp or other light source like luminous flux φ irradiated on the measurement of the base surface of the sample 1 and the illumination of the edge of the base. The edge pattern is projected by the objective lens 2 in a plane between the motor-driven scanning disc 3 and the slit diaphragm 5. In the opaque scanning disc engraved with Archimedes spiral multi-lap transparent slit. Disc helix slit diaphragm aperture and the intersection point of the formation of aperture, the disc rotation, the aperture along the measured