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本文用非相干成像系统频谱分析的概念,分析了动态白光散斑法的灵敏度问题。用光弹性材料作试件,能同时得到动态等差线和动态散斑图,从而实现结构物的应力应变分析。
In this paper, the concept of spectrum analysis in incoherent imaging system is used to analyze the sensitivity of dynamic white light speckle method. Using photoelastic material as specimen, the dynamic isobaric line and dynamic speckle pattern can be obtained at the same time, so as to realize the stress-strain analysis of the structure.