首页|An improved inverse power law model for accelerated fatigue life prediction of 6061-T6 and AZ31B-F
An improved inverse power law model for accelerated fatigue life prediction of 6061-T6 and AZ31B-F
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NSTL
Elsevier
? 2022 Elsevier LtdAccelerated vibration fatigue, using the inverse power law model (IPL), is effective to evaluate the durability of materials. However, for 6061-T6 and AZ31B-F with two-stage S-N curves, the prediction error exceeds orders of magnitude. Therefore, an improved inverse power law model (IIPL) is proposed. The results obtained from the vibration fatigue experiments show that the fatigue life prediction accuracy of IIPL is more acceptable than IPL. For two-stage S-N curves, the error of IIPL is between ?61.8% – ?0.8%, better than that of IPL (8.68 × 101% – 2.42 × 105%). Even without accelerated fatigue tests, the error by IIPL is also reasonable (-69.1% – 23.2%).
Accelerated fatigueImproved inverse power law modelSegmented fitting strategyTwo-stage S-N curve
Ge C.、Xu Z.、Du K.、Zhou C.、Tan C.、Liu W.、Wang B.、Xu S.
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State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering Mechanics Dalian University of Technology
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of Technology
NSTL
Elsevier
