…In addition, from a macroscopic point of view, fracture can be classified into creep fracture, fatigue fracture, etc., but the microscopic mechanism of fracture is often that microcracks occur in the inhomogeneous parts of the material structure due to stress concentration, and these grow or coalesce, leading to final fracture. In this case, fracture that does not involve a decrease in load is called stable fracture (stable crack growth), and final fracture that involves a decrease in load is called unstable fracture (unstable crack growth). Ductile fracture Brittle fracture [Kishi Teruo]. … *Some of the terminology that refers to "stable destruction" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このほかに,巨視的な観点から,破壊は,クリープ破壊,疲労破壊などに分類できるが,破壊の微視機構は,応力集中により材料組織の不均一部分に微視割れが生じ,それが成長するか,合体する過程を経て,最終的な破壊につながる場合が多い。このとき,荷重の低下を伴わない破壊を安定破壊(安定亀裂成長),荷重低下を伴う最終破壊を不安定破壊(不安定亀裂成長)と呼ぶ。延性破壊脆性破壊【岸 輝雄】。… ※「安定破壊」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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