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Method of destruction-free testing of surfaces using the reflected light pattern
Method of destruction-free testing of surfaces using the reflected light pattern
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机译:使用反射光图案进行表面无损检测的方法
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摘要
The surface condition of a workpiece is monitored by polishing the surface (2) and then etching until the coherent light from a laser beam (7) produces the correct pattern on a projection picture (5). The coherent beam is projected at the surface at an angle of 10 - 30 deg . Etching is carried out until the amount of coherent light in the picture is minimised or completely removed (11). Pictures of the surface can then be taken.
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