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Essential work of fracture analysis of the tearing of a ductile polymer film

机译:韧性聚合物膜撕裂的断裂分析的基本工作

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摘要

The fracture behaviour of a 0.5 mm thick ethylene–propylene block copolymer, previously evaluated using the essential work of fracture method, has been analyzed again in more detail, using different plots, allowing the determination of the crack initiation displacement and stress. In such plots is evidenced that the specific essential work of fracture, we, corresponds to the energy just up to crack initiation value that can be related with J_0. Also, it has been found a novel relationship between the plastic term, bwp and the crack initiation stress, ρ_i.
机译:以前使用断裂方法的基本功评估过的0.5 mm厚的乙烯-丙烯嵌段共聚物的断裂行为,已使用不同的图再次进行了更详细的分析,从而确定了裂纹的起始位移和应力。在这些图中,证明了断裂的特定基本功我们对应于刚好与裂纹起始值有关的能量,该能量可以与J_0相关。而且,已经发现塑性项bwp与裂纹萌生应力ρ_i之间存在新颖的关系。

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