Concept information
Preferred term
Fracture surface
Definition
- 1. An arrest line is a sharp line on the fracture surface that defines the crack front shape of an arrested or momentarily hesitated crack prior to resumption of crack propagation under a more or less altered stress configuration. (ScienceDirect, Advanced Ceramics for Dentistry 2014, Pages 77-102). 2. Fracture surfaces in a test piece can be classified according to two distinct criteria related to their kinetics (see figure) and to observations (see figure). Under static or quasi-static load, fractures are instantaneous and reflect the brittle or ductile character of the material. They are transgranular – this is true of all ductile fractures and brittle fractures proceeding by cleavage - or intergranular, in the case of brittle fractures proceeding by decohesion - depending on whether the crack generating the fracture crosses the grains or circumvents them by precisely following grain boundaries (see figure). Analysis of progressive, delayed fractures, particularly characteristic of damage caused by fatigue, creep or corrosion will be looked at later on. (https://nte.mines-albi.fr/SciMat/en/co/SM6uc1-4.html)
URI
https://purls.helmholtz-metadaten.de/evoks/sdv/FractureSurface
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