書誌事項
- タイトル別名
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- A Stochastic Model of Fatigue Crack Propagation Approximated by a Successive Random Walk Process.
- レンゾクガタ ランダム ウォーク カテイ デ キンジシタ ヒロウ キレツ シン
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In this study, crack propagation is regarded as a successive random walk process. Two Markovian models of crack growth described by the Fokker-Planck equation are introduced through Paris-Erdogan's law, and the crack length distribution at any fatigue cycle and the life distribution at any crack length are set up analytically with some approximations.<br>The first model is expressed by the Fokker-Planck equation with constant coefficients, which are calculatable from the crack propagation data, and another model is introduced theoretically from the distribution of the coefficient of Paris-Erdogan's equation directly.<br>These Fokker-Planck equations are analysed by the Lax-Wendroff scheme, one of the finite-difference methods. As a result, the crack-length distribution in random stress sequences is evaluated successfully.
収録刊行物
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- 材料
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材料 43 (484), 62-67, 1994
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205391495808
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- NII論文ID
- 110002294076
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 3859478
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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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- 抄録ライセンスフラグ
- 使用不可