書誌事項
- タイトル別名
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- An evaluation of crack growth in low cycle fatigue accompanied by ratchet deformation in terms of elastic-plastic fracture mechanics.
- 1ホウコウ ヘンケイ オ トモナウ シケン ジョウケンカ ニ オケル ヒロウ
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説明
Center-cracked specimens of JIS S35C and SUS 304 steels were low-cycle fatigued under test conditions accompanies by ratchet deformation, and crack opening displacement, crack closure and crack growth were examined. Then, crack growth rates were analyzed in terms of elastic-plastic fracture mechanics parameters. The effect of ratchet deformation on crack growth rate appeared in the log da/dN vs. log ΔJ plot in the way of accelerating crack growth rate, where da/dN is crack growth rate and ΔJ is cyclic J-integral range. Such an acceleration of crack growth rate occurred under test conditions satisfying both of σmaxnet>σy and U = 1.0, where σmaxnet, σy and U are maximum net cross-section stress, static yield stress and crack opening load range ratio, respectively. The parameter of ΔJ(1-Φmint/Φmaxt)0.3 was proposed for evaluating the crack growth rate on a ΔJ basis, where the minimum and maximum values of crack tip opening displacement were denoted by Φmint and Φmaxt. The da/dN plotted against this parameter forms a straight line independent of ratchet deformation on double logarithmic controlling the croak growth rate under test condition including ratchet deformation.
収録刊行物
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- 日本機械学会論文集A編
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日本機械学会論文集A編 54 (501), 901-909, 1988
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282679456381312
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- NII論文ID
- 110002377606
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- NII書誌ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- NDL書誌ID
- 3176947
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
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