Simulation of crack propagating in discontinuously reinforced metal matrix composite

Hiroyuki Toda, Toshiro Kobayashi

研究成果: ジャーナルへの寄稿記事

25 引用 (Scopus)

抄録

A fracture mechanics-based numerical simulation of a crack propagating under mode I loading through discontinuously reinforced metal matrix composites (MMCs) is presented. Microcrack initiation due to debonding and breakage of reinforcements, shielding and antishielding effects caused by both microcracks and the reinforcements, the effect of crack deflection, and growing crack singularity are considered in the calculation of local crack tip driving forces. Statistical variations of spatial distribution and strength of the reinforcements are also considered. The essential feature of the model is to predict crack initiation toughness and crack path morphologies using a mixed-mode crack propagation criterion. Application of the program to predict crack growth behavior in an SiC whisker/Al alloy composite is presented. Microcracking far ahead of the tip of a main crack, crack deflection toward the microcracks, and subsequent incorporation of the microcracks which most affect the main crack are well simulated. The predicted microcrack distribution and variation of mixed-mode crack tip driving forces with crack growth are also evaluated.

元の言語英語
ページ(範囲)2149-2157
ページ数9
ジャーナルMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
28
発行部数10
DOI
出版物ステータス出版済み - 1 1 1997
外部発表Yes

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metal matrix composites
cracks
Microcracks
Metals
Cracks
microcracks
Composite materials
simulation
Crack propagation
Reinforcement
reinforcement
Crack tips
crack tips
deflection
Microcracking
Debonding
Crack initiation
Fracture mechanics
Shielding
Spatial distribution

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

これを引用

Simulation of crack propagating in discontinuously reinforced metal matrix composite. / Toda, Hiroyuki; Kobayashi, Toshiro.

:: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 巻 28, 番号 10, 01.01.1997, p. 2149-2157.

研究成果: ジャーナルへの寄稿記事

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