A Zener±Stroh crack is formed by coalescing a dislocation pileup and therefore is a net dislocation loaded crack. In this paper, the interaction between a Zener±Stroch crack and surrounding cylindrical ®bers in a ®ber-reinforced composite material has been investigated. The crack is located in the matrix and near a ®ber, while the in ̄uence of other ®bers on the crack is considered through the t...

This paper is concerned with a semi-infinite interfacial crack between two bonded dissimilar elastic strips with equal thickness. Solutions for the complex stress intensity factor (SIF) and energy release rate (ERR) are obtained in closed form under in-plane deformations. During the procedure, the mixed boundary-value problem is reduced by means of the conformal mapping technique to the standar...

Abstract The most common fault in aviation power transmission systems is the fatigue fracture of gears, which seriously affects reliability and safety structure. aim this study to analyze crack propagation path (CPP) predict life (CPL) gears. location initiation determined by statics analysis building a gear pair model ANSYS software. A FEM with created, Stress Intensity Factor (SIF) at tip cal...

The present work aims at investigating the failure size effect of a spheroidal void in an infinite linear elastic solid under remote tension by means coupled Finite Fracture Mechanics (FFM) approach. opening stress field and intensity factor (SIF) annular crack surrounding cavity —necessary for FFM implementation— are obtained numerically through parametric axisymmetric finite element analyses ...

A closed-form solution is obtained for the problem of a mode-III interfacial edge crack between two bonded semi-infinite dissimilar elastic strips. A general out-of-plane displacement potential for the crack interacting with a screw dislocation or a line force is constructed using conformal mapping technique and existing dislocation solutions. Based on this displacement potential, the stress in...

AerMet 100 exhibits excellent mechanical properties, proven in previous studies; however, defects may greatly influence the behavior during service of material, which serves as one major challenges wider application material. To quantify crack evolution process, in-plane type I propagation is comprehensively investigated based on extended finite element method (XFEM). The growth characterized t...

Abstract Background The Stress Intensity Factor (SIF) is used to describe the stress state and mechanical behaviour of a material in presence cracks. SIF can be experimentally assessed using contactless techniques such as Thermoelastic Analysis (TSA). classic TSA theory concerns relationship between temperature variations was successfully applied fracture mechanics for evaluation crack tip loca...

A new procedure in the field of Bézier base extended isogeometric method (XIGA) has been introduced to analyze effect welding residual stress and thermal load on crack propagation rate fatigue life. This is based constitutive thermoelastic plastic equation. The main parts this are using B´ezier XIGA calculate redistribution due growth compute value intensity factor (SIF) field. For purpose, gri...

Stress Intensity Factors (SIFs) for cracks emanating from circular holes in two-dimensional orthotropic bodies were numerically computed taking into account the effect of geometry and orthotropy. A semi-analytical expression correction factor was found fitting numerical data. Finally, it demonstrated how same can be used to calculate SIF elliptical once appropriate changes variables are made. •...