Study on Mixed-Mode Fracture Characterization in Functionally Graded Materials

被引：4
作者：
Liu, D. L. [1 ]
Yao, X. F. [1 ]
Ma, Y. J. [1 ]
Xu, W. [2 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Civil Engn & Architecture, Dept Engn Mech, Kunming 650093, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 123卷 / 04期
关键词：
functionally graded materials; digital speckle correlation method; mechanical properties; fracture; crazing; DIGITAL SPECKLE CORRELATION; STRESS INTENSITY FACTORS; FIELD; CRACK; DEFORMATION; COMPOSITE; GRADIENT; DISPLACEMENT; PROPAGATION; MECHANICS;
D O I：
10.1002/app.34815
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The fracture characterizations on mixed-mode crack of functionally graded materials (FGMs) are investigated using digital speckle correlation method (DSCM). The stress intensity factors at mixed-mode crack tip are obtained from digital speckle displacements fields. In combination with finite elements simulation results, the influences of gradient coefficients on fracture behavior of mixed-mode cracks are analyzed. All the results show that the influence of gradient coefficients on fracture modes is not noticeable, and the stress intensity factor at the crack tip in graded materials are clearly influenced by the gradient coefficients, i.e., the stress intensity factors decrease with the increasing of gradient coefficients. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 2467-2475, 2012
引用
收藏
页码：2467 / 2475
页数：9
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