Image Correlation Analysis Applied to Measurement of Shear Strains in Laminated Composites

机译：图像相关分析在层合复合材料剪切应变测量中的应用

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Digital Image Correlation (DIC) was applied to measure interlaminar shear strains in fiber reinforced polymer composites. The strain field of short-beam shear test specimens was characterized. E-glass / vinyl ester laminates fabricated by the resin infusion molding process were utilized. The laminates were reinforced with four layers of multidirectional stitched fabric with CSM backing. Images of side surfaces of the specimens during the shear test were acquired using a high-resolution digital camera. Displacements of selected points on the surface of the specimens were measured by comparing their images with images of unloaded specimens using DIC principles. From the displacement field shear strains were calculated using finite element interpolation techniques. The experimental results indicate that the method can discriminate regions of strain concentrations. Then, direct measurements of shear strain distributions, in regions that minimize spurious strain effects, are possible. The DIC method is amiable for automation leading to enhancements in interlaminar shear characterization.

机译：数字图像相关技术（DIC）用于测量纤维增强聚合物复合材料的层间剪切应变。表征了短梁剪切试样的应变场。利用通过树脂注入成型工艺制造的电子玻璃/乙烯基酯层压板。层压材料由四层带有CSM背衬的多向缝制织物加固。使用高分辨率数码相机获取在剪切测试过程中样品侧面的图像。通过使用DIC原理将选定点的图像与未加载样品的图像进行比较，来测量选定点在样品表面上的位移。使用有限元插值技术从位移场计算剪切应变。实验结果表明，该方法可以判别菌株浓度区域。然后，可以在最小化寄生应变影响的区域中直接测量剪切应变分布。 DIC方法适用于自动化，可增强层间剪切特性。

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《SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida》|2000年|p.163-166|共4页
会议地点 Orlando FL(US)
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Lech Muszynski; Roberto Lopez-Anido; Stephen M. Shaler;
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机译：改进横向剪切计算和高阶层合板理论在聚合物基复合材料应变率相关分析中的应用

Image Correlation Analysis Applied to Measurement of Shear Strains in Laminated Composites

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