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Structures Perspective for Strength and Fatigue Prognosis in Composites

机译:复合材料强度和疲劳预后的结构视角

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Recent advances in understanding deformation and failure mechanisms of polymer-matrix composites used in rotor structures enable accurate and efficient measurement of material stiffness, strength, and fatigue characteristics based on testing small unidirectional laminate specimens. Successful failure predictions increased our confidence in the development of virtual test methods replacing some of the standard tests of multi-directional laminated composite materials with three-dimensional models accurately predicting deformation, damage topography, strength, and cycles to failure. However, the remaining key questions are related to the ability of transitioning the material scale virtual test information to larger composite structures. This work presents results of the feasibility assessment targeting the scaling of knowledge and methods acquired at the material scale, to larger structural elements.
机译:在了解用于转子结构的聚合物基复合材料的变形和破坏机理方面的最新进展,使得能够基于测试小型单向层压板样品而准确有效地测量材料的刚度,强度和疲劳特性。成功的故障预测增加了我们对开发虚拟测试方法的信心,这些方法用三维模型来准确预测变形,损坏的形貌,强度和破坏周期,从而代替了多方向层压复合材料的某些标准测试。但是,剩下的关键问题与将材料比例虚拟测试信息转换为较大的复合结构的能力有关。这项工作提出了可行性评估的结果,该评估的目标是将在物质规模上获得的知识和方法的规模扩展到更大的结构要素。

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