Fatigue Life Prediction at Elevated Temperature under Low – High and High – Low Loading Based OnMechanical Properties Damage Model | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 30, Issue 11, June 2012, Pages 1886-1896 PDF (372.87 K) | ||
| DOI: 10.30684/etj.30.11.4 | ||
| Author | ||
| Zainab K. Hantoosh | ||
| Abstract | ||
| In this work, an experimental study was carried to obtain the fatigue accumulation damage for aluminum alloy, 2024-T4 under rotating bending loading and stress ratio R= -1. The experiments were done at RT(room temperature) ,25oC ,and 200oC. A modified damage stress model was suggested to predict the fatigue life under elevated temperature which has been formulated to take into account the damage at different load levels. The present model results were compared with the experimental results and those calculated by the most fatigue damage model used in fatigue (Miners rule). The comparison showed that the present model presents reasonable factor of safety while Miner model sometimes gave a factor of safety close to unity. | ||
| Keywords | ||
| Damage stress model; life prediction of elevated temperature; Miner rule | ||
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