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首页> 外文期刊>材料 >Crack Growth in PMMA with a Very Little Content of Short Glass Fiber - Observation of Crack Opening by Optical Interferometry
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Crack Growth in PMMA with a Very Little Content of Short Glass Fiber - Observation of Crack Opening by Optical Interferometry

机译：PMMA的裂纹增长具有很少的短玻璃纤维含量 - 通过光学干涉测量观察裂缝开口

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摘要

In order to investigate the effect of short glass fiber on crack growth, DCB samples were machined from injection-molded PMMA plates with a very little content of short glass fibers and the crack tip in the sample was observed by means of optical interferometry. It was shown that (1) the interference fringes were distorted around the fiber crossing the crack planes over the region 2 approx 3 times larger than the fiber diameter and (2) the fiber depressed the crack opening due to bridging between the crack planes, lessened the craze region in front of the crack and reduced the crack growth rate leaving the arrest line on the fracture surface.
机译：为了研究短玻璃纤维对裂缝生长的影响，通过使用光学干涉测量法观察，通过光学干涉测量，从注射模制的PMMA平板加工从注射模制的PMMA平板加工。 结果表明，（1）围绕纤维扭曲的干涉条纹在将区域2上的裂缝平面上的纤维扭曲为大约3倍，（2）纤维在裂纹平面之间的桥接引起的裂缝抑制的裂缝开口 在裂缝前面的混乱区域，降低了裂缝生长速率，使陷阱表面上的逮捕线留下。

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