Determination of reliable fatigue life predictors for magnetorheological elastomers under dynamic equi-biaxial loading |
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| Institution: | 1. School of Textile and Garment, Qingdao University, Qingdao, China;2. Applied Electrochemistry Group, Dublin Institute of Technology, Dublin, Ireland;3. Centre for Elastomer Research, Dublin Institute of Technology, Dublin, Ireland;1. Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry, and Science, College of Textiles, North Carolina State University, Raleigh, NC 27695, USA;2. Statistics Ph.D. Program, Department of Statistics, College of Sciences, Raleigh, NC 27695, USA;3. Textile Chemistry Program, Department of Textile Engineering, Chemistry and Science, College of Textiles, North Carolina State University, Raleigh, NC 27606, USA;1. Polymer Division, School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia;2. On Study Leave from Faculty of Applied Sciences, Universiti Teknologi MARA, 02600 Arau, Perlis, Malaysia;1. Donghua University Collaborative Innovation Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China |
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| Abstract: | Fatigue life prediction is of great significance in ensuring magnetorheological elastomer (MRE) based rubber components exhibit reliability and do not compromise safety under complex loading, and this necessitates the development of plausible fatigue life predictors for MREs. In this research, silicone rubber based MREs were fabricated by incorporating soft carbonyl iron magnetic particles. Equi-biaxial fatigue behaviour of the fabricated MREs was investigated by using the bubble inflation method. The relationship between fatigue life and maximum engineering stress, maximum strain and strain energy density were studied. The results showed that maximum engineering stress and stored energy density can be used as reliable fatigue life predictors for SR based MREs when they are subjected to dynamic equi-biaxial loading. General equations based on maximum engineering stress and strain energy density were developed for fatigue life prediction of MREs. |
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| Keywords: | Magnetorheological elastomers Fatigue Fatigue life predictor Equi-biaxial Bubble inflation |
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