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Experimental aspects and mechanical modeling paradigms for the prediction of degradation and failure in nanocomposite materials subjected to fatigue loading conditions.

机译:用于预测纳米复合材料在疲劳载荷条件下的降解和失效的实验方面和力学建模范例。

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The objective of the current research was to contribute to the area of mechanics of composite polymeric materials. This objective was reached by establishing a quantitative assessment of the fatigue strength and evolution of mechanical property changes during fatigue loading of nanocomposite fibers and films. Both experimental testing and mathematical modeling were used to gain a fundamental understanding of the fatigue behavior and material changes that occurred during fatigue loading. In addition, the objective of the study was to gain a qualitative and fundamental understanding of the failure mechanisms that occurred between the nanoagent and matrix in nanocomposite fibers. This objective was accomplished by examining scanning electron microscopy (SEM) fractographs. The results of this research can be used to better understand the behavior of nanocomposite materials in applications where degradation due to fatigue and instability of the composite under loading conditions may be a concern. These applications are typically encountered in automotive, aerospace, and civil engineering applications where fatigue and/or fracture are primary factors that contribute to failure.
机译:当前研究的目的是在复合聚合物材料的力学领域做出贡献。通过建立对纳米复合纤维和薄膜疲劳加载过程中的疲劳强度和力学性能变化演变的定量评估,可以实现该目标。实验测试和数学建模均用于获得疲劳行为和在疲劳加载过程中发生的材料变化的基本了解。另外,该研究的目的是对纳米复合材料纤维中的纳米剂和基质之间发生的破坏机理有定性和基本的了解。该目的是通过检查扫描电子显微镜(SEM)断层扫描仪来实现的。这项研究的结果可以用来更好地理解纳米复合材料在应用中的性能,在这种应用中,可能会担心由于疲劳和复合物在加载条件下的不稳定性而引起的降解。这些应用通常在汽车,航空航天和土木工程应用中遇到,其中疲劳和/或断裂是导致故障的主要因素。

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