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本文介绍了一种应用全息干涉方法测定颅骨受外力后所产生应变的实验方法。作者采用15nm的氦-氖激光器,该器具有的波长为632.8nm,记录图像的爆光时间约为5秒。二套相干光(激光)相互干涉时所产生的干涉图记录在相片干板上,即全息图。当颅骨受应力产生应变时,应变光干涉了全息图像上的无应变光,结果即形成干涉图。此种全息摄影干涉测量法,能将整个颅骨表
In this paper, an experimental method for measuring the strain of skull after external force is introduced by using holographic interferometry. The authors used a 15-nm He-Ne laser with a wavelength of 632.8 nm and a recorded image burst time of about 5 seconds. Two sets of coherent light (laser) interfere with each other when the interference pattern is recorded in the photo dry board, the hologram. Strain light interferes with unstrained light on the holographic image as the skull is stressed by strain and the result is an interference pattern. This holographic interferometry can take the entire skull table