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Wave propagation analysis in brittle materials using a rate-dependent micromechanical damage model

机译:使用速率相关的微机械损伤模型分析脆性材料中的波传播

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Analysis of the elastic wave propagations in a brittle material subject to damage due tomicrocracking has been conducted.The softening response of the material is described by theDCA model,a rate-dependent damage model based on the mechanics of microcracks (Int.J.Solids Struct.,43,(2006):3350-3380,Int.J.Solids Struct.,47,(2010):2790-2798,J.Appl.Phys.,109,(2011):073504:1-11).The analysis shows that the elastic wave speeds of a brittle materialare sensitive to the change in the mean size of the distributed cracks in the material;therefore,measuring the elastic wave speeds in a brittle material can be an effective means to infer themean crack size (and the progression of damage) in the material.
机译:进行了脆性材料受微裂纹破坏的弹性波传播分析.DCA模型描述了材料的软化响应,DCA模型是一种基于速率的损伤模型,基于微裂纹的力学原理(Int.J.Solids Struct 。,43,(2006):3350-3380,Int.J.Solids Struct。,47,(2010):2790-2798,J.Appl.Phys。,109,(2011):073504:1-11)。分析表明,脆性材料的弹性波速对材料中分布的裂纹的平均尺寸的变化敏感;因此,测量脆性材料中的弹性波速可以是推断主裂纹尺寸的有效方法(以及损坏的进展)。

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