Fracture toughness and evaluation of coating strength with an initial residual stress field

Autor:	A. V. Byakova, V. G. Gorbach
Rok vydání:	1994
Předmět:	Surface coating Brittleness Fracture toughness Materials science Mechanics of Materials Residual stress Indentation Vickers hardness test Fracture mechanics Composite material Indentation hardness
Zdroj:	Strength of Materials. 26:40-48
ISSN:	1573-9325 0039-2316
DOI:	10.1007/bf02208051
Popis:	The effect of residual elastic stresses on the geometry of cracks which arise with contact and spontaneous failure of brittle coatings made of high-strength compounds is studied. Conditions are established for the correctness of fracture toughness KIc tests with indentation of a standard Vickers pyramid as applied to surface layers with an inhomogeneous structure and an initial residual stress field. Taking account of the anisotropy of fracture toughness established by experiment a reliable approach is suggested for evaluating the brittle strength of coatings in the presence of residual stresses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d212686d5b9ef7b6a7a3bdb3a508b3a https://doi.org/10.1007/bf02208051 Zobrazit plný text záznamu Full text from SpringerLink