Theory and analysis of environment assisted cracking in solids

环境辅助固体开裂理论与分析

• 批准号: 376237-2009
• 负责人: Fried, Eliot
• 金额: $ 1.68万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=462081
• 关键词: Theory; analysis; environment; assisted; cracking

Environment Assisted Cracking (EAC) refers to a broad spectrum of phenomena, including stress corrosion cracking and corrosion fatigue, in which a solid fractures due to the concomitant interaction of its stress state with its environment. EAC has been the primary cause of structural failures in nuclear power plants, aircraft, and pipelines. In particular, stress corrosion cracking has been responsible for many costly oil and gas pipeline failures in Canada. A quantitative framework encompassing mechanical and electrochemical interactions and their role in the degradation of solids will reduce the occurrence of such failures by enabling predictive modeling tools for: (i) assessing tolerance for damage, (ii) identifying critical areas for nondestructive inspection, and (iii) generating improved criteria for design.

环境辅助开裂（EAC）是指一系列广泛的现象，包括应力腐蚀开裂和腐蚀疲劳，其中固体由于其应力状态与其环境的伴随相互作用而断裂。EAC是核电站、飞机和管道结构故障的主要原因。特别是，应力腐蚀开裂是加拿大许多昂贵的石油和天然气管道故障的原因。包含机械和电化学相互作用及其在固体降解中的作用的定量框架将通过启用预测建模工具来减少此类故障的发生：（i）评估损伤容限，（ii）识别非破坏性检查的关键区域，以及（iii）生成改进的设计标准。