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EXPERIMENTAL RESEARCHES ON MAGNETO-THERMO-MECHANICAL CHARACTERIZATION OF TERFENOL-D
Authors:Yirui Liang  Xiaojing Zheng
Affiliation:1. Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education of China, Lanzhou University, Lanzhou 730000, Gansu, PR China;2. Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, PR China;3. Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou 730000, Gansu, PR China;1. Department of Industrial and Mechanical Engineering, Norwegian University of Science and Technology, Richard Birkelands vei 2b, 7491 Trondheim, Norway;2. Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579, Japan;1. Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze 7/A, 43124 Parma, Italy;2. IMEM-CNR Institute, Parco Area delle Scienze 37/A, 43124 Parma, Italy;3. Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124 Parma, Italy;4. Neutron and Positron Methods in Materials, Faculty of Applied Sciences, TUDelft Mekelweg 15, 2629 JB, Delft, The Netherlands;5. Fundamental Aspects of Materials and Energy, Faculty of Applied Sciences, TUDelft Mekelweg 15, 2629 JB, Delft, The Netherlands
Abstract:The coupling effects of axial pre-stress,temperature and magnetic field on magne- tostrictive strain and magnetization as well as Young's modulus of a Terfenol-D (Tb_(0.3)Dy_(0.7)Fe_(1.93)) rod are tested to give a good understanding of magneto-thermal-mecha-nical characteristics of giant magnetostrictive materials.Results show that magneto-thermo-mechanical coupling of gi- ant magnetostrictive materials is very strong;and the influences of pre-stress and temperature on magnetostrictive strain and Young's modulus vary with the intensity of magnetic field.
Keywords:gaint magnetostrictive material  Young's modulus  magneto-thermo-mechanical characterization  magnetostrictive strain  magnetization
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