| Summary: | 碩士 === 國立成功大學 === 機械工程學系 === 89 === The method of moire′ interferometry is a kind of the optical technique of full-field measurement of displacement. We can measure displacement in x-direction and y-direction directly by use of the number and the distribution of the fringes measured by the method, and by use of the judgement of fringe order.
The thesis makes a statement in detail of the construction and the experiment methods of geometry moire′ and moire′ interferometry. First, we measure the change of the included angle of fringes on the specimen which is extended by a single-axial load by use of geometry moire′ method, and evaluate the strain by the image processing method. Then we compare with the result measured by strain-gage in order to check the precise of the experiment method. Second, we get the fringes pattern by moire′ interferometry after the specimen is loaded. From the fringes, we analyze the mechanical property of the specimen, and make a qualitative and quantity discussion. Hope that we can master the skill gradually of moire′ interferometry by this experiment and use it for the beginning of going into the other related experiments.
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