Photoelastic characterization of shear-bands in mechanically stretched polymeric fibers,Microscopy Research and Technique

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Photoelastic characterization of shear-bands in mechanically stretched polymeric fibers
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2021-08-09 , DOI: 10.1002/jemt.23895
Taha Z N Sokkar ₁ , Mohammed A El-Bakary ₁ , Amira A S Azam ₁ , Ahmed A Hamza ₁

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In this work, the shear bands formed during the stretching of isotactic polypropylene fibers are studied. The digital photoelasticity technique is applied to provide full-field visualization of the stress of the shear bands regions. The mechanical testing device is modified to be suitable for mechanical measurements. The effect of different parameters, that is, the stretching rates and the ambient temperature on the formation of shear bands is investigated. Finally, the influence of heating pre-existed shear bands is studied. Photoelastic patterns of the shear bands at these conditions are included for illustration.

中文翻译：

机械拉伸聚合物纤维中剪切带的光弹性表征

在这项工作中，研究了等规聚丙烯纤维拉伸过程中形成的剪切带。数字光弹性技术用于提供剪切带区域应力的全场可视化。机械测试设备被修改以适合机械测量。研究了不同参数，即拉伸速率和环境温度对剪切带形成的影响。最后，研究了加热预先存在的剪切带的影响。包括在这些条件下剪切带的光弹性图案以供说明。

更新日期：2021-08-09

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