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前言在散斑照相术未引起人们注意、重视以前,国内外在工程构件的应变测量、应力分析工作中,一般应用全息照相干涉测量术。全息照相干涉测量术在进行上述工作时既需要准确定位的记录过程又需要大量的数学演算过程。而用散斑照相进行此项工作时,能把工程构件复杂应变或畸变形成的干涉条纹分离并区分开,而且,能进行快速目视分析。除此外,还能用以记录,分析工程构件裂纹的传播机理等。
Preface In the speckle photography did not attract the attention of attention before, at home and abroad in the structural components of the strain measurement, stress analysis work, the general application of holographic interferometry. Holographic interferometry requires both accurate recording of the location and a large number of mathematical calculations in carrying out the above tasks. When speckle photography is used for this task, interference fringes formed by complex strain or distortion of engineering components can be separated and distinguished, and rapid visual analysis can be performed. In addition, can also be used to record and analyze the crack propagation mechanism of engineering components.