A SYNTHETIC METHOD FOR SERVICE LIFE ASSESSMENT OF STEAM TURBINE BLADE CONSIDERING MANY UNCERTAIN FACTORS

摘要：

As there are many factors which affect blade life can not be analyzed exactly, it is difficult to evaluate service life of blade by numerical analysis. Firstly, by introducing Neuber’s rule and the rainflow counting method, based on dynamic stress, a model to evaluate the fatigue life of steam turbine blade has been developed. Secondly, based on fatigue life analysis and fuzzy comprehensive evaluation, a synthetic method for service life assessment of blade considering many uncertain factors has been developed. At last, Life assessment of a 323mm blade was carried our and reasonable result was obtained, so the method is usable for engineering application.

作者: Yonghui Xie Di Zhang

作者单位: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi Province, 710049, P. R. China

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）