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Hardness test impression measurement in material surfaces - involves narrow light beam projected onto tested surface and moved across impression
Hardness test impression measurement in material surfaces - involves narrow light beam projected onto tested surface and moved across impression
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机译:材料表面的硬度测试压痕测量-涉及窄光束投射到测试表面并在压痕上移动
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摘要
A concentrated light beam is used. Its dia. at the point of incidence is small with respect to the surface area to be measured and it is directed vertically onto the tested surface. It is moved parallel to the surface so that the path of the light spot crosses at least once the test impression. The intensity of light reflected within a certain angle is measured. The intensity change of light at the impression edge crossing marks the beginning and end of the movement path section corresponding to the distance between edges of the impression. This length is measured.
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