基于规则的晶间腐蚀和氢致开裂的失效模式诊断

中国腐蚀与防护学报, 2011, 31(4): 260-264.

基于规则的晶间腐蚀和氢致开裂的失效模式诊断

1.1. 安徽工业大学机械工程学院马鞍山 2430022. 合肥通用机械研究院合肥 2300313. 北京航空航天大学材料科学与工程学院北京 100083>

1.1. Department of Mechanical Engineering, Anhui University of Technology, Ma'an'shan 2430012. Hefei General Machinery Research Institute, Hefei 2300313. School of Material Science and Engineering, Beihang University, Beijing 100083>

基金项目: 国家高技术研究发展计划项目(2009AA04480204)和安徽省高校省级青年人才基金(2010SQRL035)资助

关键词：晶间腐蚀 , hydrogen brittleness , failure feature , expert system , failure mode analysis

CORROSION FAILURE MODE ANALYSIS OF INTERGRANULAR ATTACK AND HYDROGEN BRITTLENESS BASED ON FAILURE RULES

RAO Sixian , WAN Zhang , SONG Guangxiong , ZHANG Zheng , ZHONG Qunpeng

Keywords： intergranular attack , 氢致开裂 , 失效特征 , 专家系统 , 失效模式诊断

根据对现有的压力容器、石油管道腐蚀失效案例和现有失效知识的分析与总结，提出了晶间腐蚀和氢致开裂两种模式的腐蚀失效特征。依据这些失效特征建立相应的两种腐蚀失效模式的失效判断规则，根据这些失效规则运用COM Wizard、数据库技术和可靠性技术建立有效的腐蚀失效模式诊断专家系统。该专家系统根据输入的腐蚀失效特征来识别案例的腐蚀失效模式并给出综合可信度作为诊断结果的评价参数。

Corrosion failure features of intergranular attack and hydrogen brittleness were generalized through analysis and sum-up on corrosion failure cases of pressure vessels and pipelines and the existing failure information. COM Wizard, data base technique, and reliability engineering were applied to construct an effective corrosion failure diagnosis expert system. Corrosion failure modes of real cases were analyzed in the expert system through the corrosion failure features input and the results were listed by general certainty as the evaluation parameter.

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