RISK ESTIMATION FOR LCF CRACK INITIATION

被引：0
|
作者：
Schmitz, Sebastian [1 ,3 ]
Gottschalk, Hanno [2 ]
Rollmann, Georg [1 ]
Krause, Rolf [3 ]
机构：
[1] Siemens AG Energy, Gas Turbine Dept Mat & Technol, D-45473 Mulheim, Nordrhein Westf, Germany
[2] Berg Univ Wuppertal, Fac Math & Nat Sci, D-42097 Wuppertal, Nordrhein Westf, Germany
[3] Univ Svizzerra Italiana, Inst Computat Sci, CH-6900 Lugano, Ticino, Switzerland
来源：
PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2013, VOL 7A | 2013年
关键词：
STRAINS;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An accurate risk assessment for fatigue damage is of vital importance for the design and service of today's turbomachinery components. We present an approach for quantifying the probability of crack initiation due to surface driven low-cycle fatigue (LCF). This approach is based on the theory of failure-time processes and takes inhomogeneous stress fields and size effects into account. The method has been implemented as a finite-element postprocessor which uses quadrature formulae of higher order Results of applying this new approach to an example case of a gas-turbine compressor disk are discussed.
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页数：11
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