書誌事項
- タイトル別名
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- Simulation of initiation and early propagation of creep-fatigue small cracks based on the model of random fracture resistance of grain boundaries.
- リュウカイ ハカイ テイコウ ブンプ モデル ニ ヨル クリープ ヒロウ ビシ
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A stochastic model and a method of simulation of the initiation and the early propagation of creep-fatigue small cracks along grain boundaries were proposed. In the model, grain boundaries between two adjacent triple points were projected and linked on a straight line perpendicular to the applied stress axis, and their length was given as random variables of a normal distribution. The grain boundaries had their own fracture resistances, the magnitudes of which were given as uniform random numbers. The fracture resistance of each grain boundary decreased by a constant magnitude corresponding to the driving force of one fatigue cycle. When the resistance become zero or a negative value, the grain boundary was assumed to fracture and to yield an intergranular facet of small crack. Based on this model, a numerical calculation was done for a smooth specimen of 304 stainless steel subjected to the slow-fast strain cycle of 1%-total strain range at 923K in a vacuum. The result of simulation on crack density, cumulative probability of crack length, and crack propagation rates coincided with the experimental results.
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 (503), 1312-1316, 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
- 1390001204478086528
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- NII論文ID
- 110002373676
- 10004537067
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- NII書誌ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- NDL書誌ID
- 3190162
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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
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可