发明名称 |
TURBINE BLADE FATIGUE LIFE ANALYSIS USING NON-CONTACT MEASUREMENT AND DYNAMICAL RESPONSE RECONSTRUCTION TECHNIQUES |
摘要 |
A method dynamically reconstructing a stress and strain field of a turbine blade includes providing a set of response measurements from at least one location on a turbine blade, band-pass filtering the set of response measurements based on an upper frequency limit and a lower frequency limit, determining an upper envelope and a lower envelope of the set of response measurements from local minima and local maxima of the set of response measurements, calculating a candidate intrinsic mode function (IMF) from the upper envelope and the lower envelope of the set of response measurements, providing an N×N mode shape matrix for the turbine blade, where N is the number of degrees of freedom of the turbine blade, when the candidate IMF is an actual IMF, and calculating a response for another location on the turbine blade from the actual IMF and mode shapes in the mode shape matrix. |
申请公布号 |
EP2904368(B1) |
申请公布日期 |
2016.07.27 |
申请号 |
EP20130777213 |
申请日期 |
2013.10.04 |
申请人 |
SIEMENS CORPORATION;SIEMENS ENERGY, INC. |
发明人 |
GUAN, XUEFEI;ZHANG, JINGDAN;ZHOU, SHAOHUA KEVIN;ULERICH, NANCY H.;KIM, NAM EUNG;TEVS, NIKOLAI R. |
分类号 |
G01M5/00;G01M15/14 |
主分类号 |
G01M5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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