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PROFANT, T. KOTOUL, M.
Originální název
Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
There is investigated a crack problem for an array of collinear microcracks in composite matrix. Inclusions are situated in between the neighbouring microcracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations. Stress intensity factor is calculated for various cracks/inclusions geometries and elastic moduli mismatches. The process by which a fibre-reinforced cross-ply ceramic composite is damaged and eventually fails under tension is very complex. After an initial elastic response, the damage starts with matrix cracking in 90 plies. These microcracks spread as 3D tunnelling cracks from small flaws located in the matrix of the 90 plies. Driving force for steady-state tunnelling, Gss, can be calculated using plane-strain elasticity solutions for the energy release rate G at the edge of plane-strain crack.
Klíčová slova
particle composites; continuously distributed dislocations; cracks-inclusions interactions, thermal expansion; crack tunnelling
Autoři
PROFANT, T.; KOTOUL, M.
Rok RIV
2005
Vydáno
29. 3. 2005
Nakladatel
ÚMTMB FSI v Brně
Místo
Brno
ISBN
80-214-2373-0
Kniha
Aplikovaná mechanika 2005
Strany od
85
Strany do
86
Strany počet
2
BibTex
@inproceedings{BUT20703, author="Tomáš {Profant} and Michal {Kotoul}", title="Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites", booktitle="Aplikovaná mechanika 2005", year="2005", pages="85--86", publisher="ÚMTMB FSI v Brně", address="Brno", isbn="80-214-2373-0" }