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首页> 外文期刊>Engineering Fracture Mechanics >Analysis of an interface crack for a functionally graded strip sandwiched between two homogeneous layers of finite thickness
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Analysis of an interface crack for a functionally graded strip sandwiched between two homogeneous layers of finite thickness

机译：夹在有限厚度的两个均质层之间的功能梯度钢带的界面裂纹分析

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摘要

The interface crack problem for a composite layer that consists of a homogeneous substrate, coating and a nonhomogeneous functionally graded interphase was formulated for singular integral equations with Cauchy kernels, which were integrated using the Lobatto-Chebyshev collocation technique. Mixed-Mode Stress Intensity Factors (SIFs) and Strain Energy Release Rates were calculated. The SIFs were compared for accuracy with relevant results previously published. The parametric studies were conducted for the various thickness of each layer and for various nonhomogeneity ratios. Particular application to the Zirconia thermal barrier on steel substrate is demonstrated.
机译：针对具有柯西核的奇异积分方程，提出了由均质基体，涂层和非均质功能梯度中间相组成的复合层的界面裂纹问题，并使用Lobatto-Chebyshev搭配技术对其进行了积分。计算了混合模式应力强度因子（SIF）和应变能释放速率。将SIF的准确性与先前发表的相关结果进行了比较。对每层的各种厚度和各种非均质比进行了参数研究。证明了在钢基材上的氧化锆隔热层的特殊应用。

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