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Damping of Ni–Mn–Ga epoxy resin composites 被引量:1
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作者 Wei Liang He Yu +1 位作者 Liu Yufeng Yang Naibin 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第6期1596-1605,共10页
By combining the advantages of effcient damping and high mechanical properties,Ni-Mn-Ga particle composites have a very good prospect for applications in damping structure design.In this paper,a ferromagnetic shape me... By combining the advantages of effcient damping and high mechanical properties,Ni-Mn-Ga particle composites have a very good prospect for applications in damping structure design.In this paper,a ferromagnetic shape memory alloy Ni-Mn-Ga composite is prepared.Ni-Mn-Ga particle/bisphenol-A epoxy composite cantilever beam vibration tests under a magnetic feld and without the magnetic feld are conducted to analyze the structural damping ratios n.Meanwhile,the damping characteristics of the Ni-Mn-Ga composite are studied through the axial loading-unloading method and the acoustic emission signals method.The damping coeffcient of the composite for different Ni-Mn-Ga volume fractions is obtained.The interface properties of the composite are discussed by micro examination and axial loading.The relationships between the damping of the composite and that of the component materials are discussed.The specifc damping capacity(SDC)and acoustic emission counts diagram of different specimens with different Ni-Mn-Ga volume fractions are analyzed. 展开更多
关键词 Acoustic emission Ferromagnetic material Material damping Ni-Mn-Ga resin matrix composite structural damping ratio
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