Critical crack path assessments in failure investigations

Die crack failure mechanism investigations depending on the time of failure

Propagation of Crack in Linear Elastic Materials with Considering Crack Path Correction Factor

Modeling of crack propagation by a finite element method under mixed mode conditions is of prime importance in the fracture mechanics. This article describes an application of finite element method to the analysis of mixed mode crack growth in linear elastic fracture mechanics. Crack - growth process is simulated by an incremental crack-extension analysis based on the maximum principal stress c...

Crack path prediction in anisotropic brittle materials.

A force balance condition to predict quasistatic crack paths in anisotropic brittle materials is derived from an analysis of diffuse interface continuum models that describe both short-scale failure and macroscopic linear elasticity. The path is uniquely determined by the directional anisotropy of the fracture energy, independent of details of the failure process. The derivation exploits the gr...

Crack path selection in piezoelectric bimaterials

The problem of crack path selection in piezoelectric bimaterials is considered in this paper. Based on the Stroh formulation for anisotropic material and GreenÕs functions for piezoelectric bimaterials, the crack problem is expressed in terms of coupled singular integral equations at ®rst, and then the equations are used to solve for stress and electric displacement ®elds numerically. A crack i...

clinical investigations in critical care

Study objective: The percutaneous dilatational tracheostomy can be performed with a low compli¬ cation rate if several important technical details are followed. This study delineates our experience and recommends changes in the operative technique. Design and setting: Patients requiring tracheostomy were selected for percutaneous dilatational tracheostomy based on previously reported criteria. ...