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将铝箔粘贴在被测试样或工件上,当对试样施加周期性循环载荷时,铝箔因疲劳在表面形成滑移带。利用激光光斑检测器、检测光斑强度分布来评价试样或工件的应度。由于这种方法可以无损、无接触测应变、而且表征试样应变的铝箔滑移带有保存性,当机械停止运行后,观察铝箔表面光斑强度分布,可推断停机前夕所测点的应变。因此这种
The aluminum foil is affixed to the test sample or workpiece, when the sample is subjected to cyclic loading, the aluminum foil slip surface fatigue due to fatigue. The use of laser spot detector, spot intensity distribution to assess the sample or workpiece should be degree. Because this method can be non-destructive, non-contact measurement of strain, and characterize the specimen strain of aluminum foil slip with preservation, when the mechanical stop running, observe the aluminum foil surface spot intensity distribution can be inferred on the eve of the measured point strain. So this