Fracture toughness evaluation and specimen size effect

T. Kobayashi, S. Morita, H. Toda

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

抄録

This paper reviews specimen size effect which significantly affects fracture toughness and fracture behavior of materials mainly based on the present authors' research works. After introducing controversial scale problems on fracture and fracture toughness, various actual examples of the scale problems are presented from a viewpoint of the effects of specimen size on dynamic fracture toughness values in various materials, such as steel for nuclear pressure vessel designated as A508cl.3, ductile cast iron, AC4CH aluminum casting alloy and silicon nitride ceramic. Then, the γ factor which has been introduced by Atkins et al. to interpret differences in fracture behaviors between a specimen (i.e. model) and the actual structure (i.e. prototype) and the Q factor which expresses the discrepancy between the HRR solution and the actual stress distribution at a crack-tip, are described for recognition of the scale problems.

元の言語英語
ページ(範囲)52-57
ページ数6
ジャーナルMaterials Transactions
42
発行部数1
DOI
出版物ステータス出版済み - 1 1 2001

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fracture strength
Fracture toughness
evaluation
Aluminum castings
pressure vessels
Steel
crack tips
Pressure vessels
Silicon nitride
Cast iron
silicon nitrides
Crack tips
stress distribution
nitrides
Stress concentration
casts
Q factors
prototypes
steels
ceramics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Fracture toughness evaluation and specimen size effect. / Kobayashi, T.; Morita, S.; Toda, H.

:: Materials Transactions, 巻 42, 番号 1, 01.01.2001, p. 52-57.

研究成果: ジャーナルへの寄稿記事

Kobayashi, T. ; Morita, S. ; Toda, H. / Fracture toughness evaluation and specimen size effect. :: Materials Transactions. 2001 ; 巻 42, 番号 1. pp. 52-57.
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