Uncracked body analysis for accurate estimates of mode I stress intensity factor for cracks normal to an interface

被引：2

作者：

Wang, Yaou ^{[1
]}

Katsube, Noriko ^{[1
]}

Rokhlin, Stanislav I. ^{[2
]}

Seghi, Robert R. ^{[3
]}

机构：

[1] Ohio State Univ, Dept Mech Engn, Scott Lab, Columbus, OH 43210 USA

[2] Ohio State Univ, Dept Ind Welding & Syst Engn, Edison Joining Technol Ctr 132, Columbus, OH 43221 USA

[3] Ohio State Univ, Coll Dent, Dept Restorat & Prosthet Dent, Columbus, OH 43210 USA

来源：

ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 03期

关键词：

Stress intensity factor; Small cracks; Surface flaw; Micromechanics; Uncracked body analysis; OXIDE FUEL-CELLS; STATISTICAL FAILURE ANALYSIS; THERMAL BARRIER COATINGS; ENERGY-RELEASE RATE; RESIDUAL-STRESS; BOND COAT; INDENTATION; FILMS;

D O I：

10.1016/j.engfracmech.2008.10.016

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A bonded crack model method is presented for estimation of the stress intensity factor (SIF) for a 3D half-penny shaped crack originating at a bonded interface subjected to remote constant tensile and proportional bending loadings. Closed-form approximations are obtained for the SIF as a function of modulus ratio of bonded dissimilar materials. A combination of bonded crack model method and macro-level stress calculations in a structure without a crack (uncracked body analysis) significantly simplifies accurate estimation of SIF. The method was validated using 3D finite element computations. Since the proposed method requires no repetitive stress calculation as crack size changes, it is useful in life predictions. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：369 / 385

页数：17

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