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Configuration of Novel Experimental Fractographic Reverse Engineering Approach Based on Relationship between Spectroscopy of Ruptured Surface and Fracture Behaviour of Rubber Sample

机译:基于橡胶样品破裂表面光谱与骨折行为的基于关系的新型实验式配线逆向工程方法的配置

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摘要

A novel fractographic approach based on a combination of (i) mechanical behavior of cured rubber in uniaxial tensile loading and (ii) spectroscopy of fracture on a ruptured surface was experimentally validated. This approach related the migration of paraffin oil from a matrix to the ruptured rubber surface, to the tearing energy related to the deformation speed responsible for total rubber sample rupture, and the approach itself was configured experimentally. It was evaluated on cured natural rubber (NR) for two different paraffin oil concentrations. Single edge notched tensile (SENT) samples were subjected to uniaxial tensile loadings at two different deformation speeds. First, the tearing energy as a function of deformation speed was determined for each defined oil concentration. Secondly, at specific locations on the ruptured surfaces, infrared (IR) spectroscopy was performed to quantify a characteristic absorbance peak height of migrated paraffin oil during the rupture process. The results of the IR analyses were related to the deformation speed to understand the relation between the amount of migrated paraffin oil during the fracture process and the deformation speed which brought about such a fracture. This novel approach enhanced the reverse engineering process of rubber fracture related to the cause of tearing energies during critical failure.
机译:基于(i)固化橡胶在单轴拉伸负载中的(I)机械行为的组合的新型式分割方法,并在破裂表面上的裂缝的裂缝光谱法进行了实验验证。这种方法相关与矩阵到破裂橡胶表面的石蜡油迁移,与负责总橡胶样品破裂的变形速度相关的撕裂能量,并且该方法本身被实验配置。它是在固化的天然橡胶(NR)上进行两种不同的石蜡浓度评估。单边缘切口拉伸(送)样品以两个不同的变形速度经受单轴拉伸载体。首先,针对每个定义的油浓度确定作为变形速度函数的撕裂能量。其次,在发生破裂表面的特定位置,进行红外(IR)光谱,以在破裂过程中量化迁移的石蜡油的特征吸光度峰值高度。 IR分析的结果与变形速度有关,以了解在断裂过程中迁移的石蜡油的量的关系和带来这种骨折的变形速度。这种新方法增强了与临界失败期间撕裂能量原因相关的橡胶骨折的逆向工程过程。

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