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Heterogeneous fracture mechanics for multi-defect analysis

机译：异质断裂力学用于多缺陷分析

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摘要

Discrete flaw computational damage mechanics is often used to certify the life of composite aircraft parts made from continuous fiber reinforced composite laminates. Other modes and combinations of damage that define changes in the defect state and the attendant loss of integrity and increased risk of operation of composite structures throughout the life of a component do not yet have a corresponding general representation. The present paper postulates a more general "heterogeneous fracture mechanics" concept based on an experimental observable and a multiphysics analysis used to interpret such observations, for multi-defect representations. Experimental and analytical foundations for the new concept are presented. The method can provide a foundation for the conception and design of durable and damage tolerant heterogeneous material systems for a myriad of applications, including vehicular and civil structures, medical prosthetics, and energy conversion and storage devices. Published by Elsevier Ltd.
机译：离散缺陷计算损伤机制通常用于验证由连续纤维增强复合材料层压板制成的复合飞机零件的寿命。定义缺陷状态变化以及随之而来的完整性损失以及在整个组件生命周期内复合结构运行风险增加的其他损坏方式和组合尚没有相应的一般表示。本文基于实验可观察性和用于解释此类观察结果的多物理场分析，提出了更为通用的“异构断裂力学”概念，用于多缺陷表示。提出了新概念的实验和分析基础。该方法可以为用于包括车辆和民用建筑，医疗修复以及能量转换和存储设备在内的多种应用的耐用和耐损伤的异质材料系统的概念和设计提供基础。由Elsevier Ltd.发布

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