期刊
FATIGUE DESIGN 2013, INTERNATIONAL CONFERENCE PROCEEDINGS
卷 66, 期 -, 页码 608-614出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.proeng.2013.12.112
关键词
Fatigue; EBSD based damage criteria; TEM; local deformation estimation
资金
- French Environment and Energy Management Agency (ADEME)
- Valeo Engine Electrical Systems
Components of new car alternators are subjected fatigue damage due to the start-stop cycles. Predicting their fatigue life still requires needs an experimental validation. Hence, identification of both monotonic and cyclic behaviour is required to integrate the right values in the models. Therefore a precise analysis of the dislocation arrangement produced by cyclic plasticty appears as a fatigue damage indicator. Here SEM-EBSD provide two plasticity markers: the Kernel Average Misorientation and the Low Angel Grain Boundaries that characterize dislocations arrangements in a quantitative way. Based on these indexes, the comparison between lab fatigue specimens and component gives an estimation of the local cyclic plastic strain. (C) 2013 The Authors. Published by Elsevier Ltd. Selection and peer-review under responsibility of CETIM
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