Detail publikace
Výpočtová analýza růstu trhliny v keramických laminátech s vysokou pevností rozhraní a velkými tlakovými residuálními napětími
KOTOUL, M. ŠEVEČEK, O. VYSLOUŽIL, T.
Český název
Výpočtová analýza růstu trhliny v keramických laminátech s vysokou pevností rozhraní a velkými tlakovými residuálními napětími
Anglický název
Crack Growth in Ceramic Laminates with Strong Interfaces and Large Compressive Residual Stresses
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Residual compressive stresses developed in layered ceramics may improve the crack resistance of the material during crack growth by reducing the crack driving force at the crack tip. i.e. R-curve behaviour occurs. Elastic contrast of layers often plays an important role by inducing an additional crack driving force term which can promote (anti-shield) or retard (shield) the crack propagation. Since the toughening effect of the residual stress state is often predicted by means of the weight function method, it is matter of interest to find limits for the application of weight function concept in elastically inhomogeneous laminates. Another objective of the paper is to investigate in detail the very process of crack transition across thermo-elastically mismatched layer interfaces. Due to the discontinuity in the elastic properties, finite crack extensions are to be considered instead of infinitesimal one. The concept of Finite Fracture Mechanics (FFM) is applied to tackle this problem.
Český abstrakt
Residual compressive stresses developed in layered ceramics may improve the crack resistance of the material during crack growth by reducing the crack driving force at the crack tip. i.e. R-curve behaviour occurs. Elastic contrast of layers often plays an important role by inducing an additional crack driving force term which can promote (anti-shield) or retard (shield) the crack propagation. Since the toughening effect of the residual stress state is often predicted by means of the weight function method, it is matter of interest to find limits for the application of weight function concept in elastically inhomogeneous laminates. Another objective of the paper is to investigate in detail the very process of crack transition across thermo-elastically mismatched layer interfaces. Due to the discontinuity in the elastic properties, finite crack extensions are to be considered instead of infinitesimal one. The concept of Finite Fracture Mechanics (FFM) is applied to tackle this problem.
Anglický abstrakt
Residual compressive stresses developed in layered ceramics may improve the crack resistance of the material during crack growth by reducing the crack driving force at the crack tip. i.e. R-curve behaviour occurs. Elastic contrast of layers often plays an important role by inducing an additional crack driving force term which can promote (anti-shield) or retard (shield) the crack propagation. Since the toughening effect of the residual stress state is often predicted by means of the weight function method, it is matter of interest to find limits for the application of weight function concept in elastically inhomogeneous laminates. Another objective of the paper is to investigate in detail the very process of crack transition across thermo-elastically mismatched layer interfaces. Due to the discontinuity in the elastic properties, finite crack extensions are to be considered instead of infinitesimal one. The concept of Finite Fracture Mechanics (FFM) is applied to tackle this problem.
Klíčová slova česky
Ceramic laminates; FEM; R-curve; residual stresses; bimaterial interface; finite fracture mechanics.
Klíčová slova anglicky
Ceramic laminates; FEM; R-curve; residual stresses; bimaterial interface; finite fracture mechanics.
Rok RIV
2012
Vydáno
15.10.2012
ISSN
0167-8442
Ročník
2012 (61)
Číslo
1
Strany od–do
40–50
Počet stran
11
BIBTEX
@article{BUT95677,
author="Michal {Kotoul} and Oldřich {Ševeček} and Tomáš {Vysloužil},
title="Crack Growth in Ceramic Laminates with Strong Interfaces and Large Compressive Residual Stresses",
year="2012",
volume="2012 (61)",
number="1",
month="October",
pages="40--50",
issn="0167-8442"
}