-
- 兼清 泰明
- 関西大学環境都市工学部都市システム工学科
書誌事項
- タイトル別名
-
- Proposal of a New Probabilistic Model for Random Fatigue Crack Growth Using a Noise of Poisson Type
- ヒロウ キレツ ノ フキソク セイチョウ ニ タイスル Poissonガタ ノイズ オ モチイタ カクリツ モデル ノ アラタ ナ テイアン
この論文をさがす
抄録
A probabilistic model describing random fatigue crack growth is newly proposed, in which a stochastic differential equation driven by a temporally inhomogeneous compound Poisson process is applied. The new model has several outstanding features such as (i) we can perfectly remove the probability that a crack length decreases in the process of fatigue failure and (ii) an analytical approach is possible for obtaining probabilistic properties associated with the crack growth process. The former feature gives a quite effective solution over a critical disadvantage point inherent in the so-called diffusive model which has been widely used for describing the random fatigue crack growth.<br>First, the well-known Paris-Erdogan law is extended to a stochastic differential equation by introducing a temporally inhomogeneous compound Poisson process expressing the random behavior of crack propagation resistance. Next, its solution process is analytically derived by the use of the generalized Ito formula and probabilistic properties associated with the random fatigue crack growth process are also clarified. Finally, some numerical examples are given so that we can quantitatively clarify sample behavior of the crack growth and temporal variation of a probability distribution of a crack length.
収録刊行物
-
- 材料
-
材料 63 (2), 92-97, 2014
公益社団法人 日本材料学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282680420512000
-
- NII論文ID
- 130003393246
- 40019989524
-
- NII書誌ID
- AN00096175
-
- ISSN
- 18807488
- 05145163
-
- NDL書誌ID
- 025290486
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可
