全息干涉法是一种较现代的方法,可用于测定那些量值接近于光波波长(λ<1μm)的极小位移和变形。它以相干激光的应用为基础,只是在最近几年内才得到了迅速的发展,并用于实际中。 最近四年来,已发表了若干报告,报导了这种测试方法的物理学依据及其在材料试验中的应用。 Holographic interferometry is a more modern method that can be used to determine those extremely small displacements and deformations that have magnitudes close to the wavelength of light (λ <1 μm). It is based on the application of coherent lasers, which has only been rapidly developed in recent years and is being used in practice. In the last four years, several reports have been published on the physical basis for this test method and its application in material testing.