“服役条件-持久强度”干涉模型及其在T91/P91钢可靠性评估中的应用  

Service Condition-Creep Rupture Property Interference Model and Its Application in Reliability Assessment of T91/P91 Steels

作　　者：叶松[1] 李东明[1] 赵杰[1] 吕袭蒙[1] 张士军[2] 

机构地区：[1]大连理工大学材料科学与工程学院,大连116085 [2]大连理工大学国家示范性软件学院,大连116085

出　　处：《动力工程》2009年第12期1164-1167,共4页Power Engineering

基　　金：国家863计划资助项目(2006AA04Z421)

摘　　要：分析了基于Z参数的用于高温材料持久寿命可靠性预测的"服役条件-持久强度"干涉(SCRI)模型,建立了适用于该模型的Monte-Carlo随机模拟分析算法.利用SCRI模型对T91/P91钢进行了不同可靠度下的持久寿命预测,在综合考虑性能数据分散性及服役条件波动性的情况下实现了材料持久寿命的可靠性预测,为材料的可靠性设计提供了新的思路和方法.A ＂service condition-creep rupture property＂ interference model（SCRI model） based on Z parameters for reliability assessment of rupture life prediction of high-temperature materials was analyzed,while a Monte-Carlo algorithm suiting the model proposed.With the SCRI model,reliability-based creep-rupture life prediction of T91/P91 steels was performed,whereas the reliability of creeprupture life prediction evaluated in consideration of the dispersivity of functional data and fluctuation of service conditions.This method may serve as a reference for reliability design of similar materials.

关 键 词：SCRI模型 可靠性评估 MONTE-CARLO方法 寿命预测 T91/P91钢 

分 类 号：TG1[金属学及工艺—金属学]