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A digital holographic method that can be used for the simultaneous measurement of slopes of a deformed object in different directions is described in this paper. In this method, two holograms are recorded numerically under the normal and deformed states of the specimen, and two object waves are numerically calculated from these two holograms. The slopes corresponding to different directions are measured by superposing the two object waves with appropriate shifts. It is a superior method in regard to the simple experiment setup, the flexibility in handing the data, and the high quality phase maps. 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｓｔｒｅｓｓａｎａｌｙｓｔｓａｒｅｏｆｔｅｎｉｎｔｅｒｅｓｔｅｄｉｎｔｈｅｄｅｒｉｖａｔｉｖｅｓｏｆｔｈｅｄｉｓｐｌａｃｅｍｅｎｔｒａｔｈｅｒｔｈａｎｔｈｅｄｉｓｐｌａｃｅｍｅｎｔｉｔｓｅｌｆ ,ｂｅｃａｕｓｅｓｔｒａｉｎｓａｎｄｈｅｎｃｅｓｔｒｅｓｓｅｓａｒｅｆｉｒｓｔ ｏｒｄｅｒｄｅｒｉｖａｔｉｖｅｓｏｆｄｉｓｐｌａｃｅｍｅｎｔ.Ｔｈｅｄｅｒｉｖａｔｉｖｅｓｃａｎｂｅｏｂｔａｉｎｅｄｎｕｍｅｒｉｃａｌｌｙｆｒｏｍｔｈｅｄｉｓｐｌａｃｅｍｅｎｔｄａｔａｂｕｔｔｈｅｐ… 相似文献
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