Experimental investigation on shape memory alloy metal rubber

Shape memory alloy metal rubber (SMAMR) is a novel intelligent elastic damping material which can realize the integration of structure and function. The investigations on the anisotropic mechanical characteristics which depended on shaping craft and working temperature were conducted by quasi-static tests. Comparative experiments indicated that the heat setting temperature affect the elastic modulus non-monotonously but has little effect on the loss factor of SMAMR in both martensite and austenite phases. With the increase of the heat setting time, the elastic modulus of SMAMR monotonously decreases and the reduction of loss factor is unobvious. With the present shaping craft, SMAMR exhibits the anisotropy in moulding and non-moulding directions, which is affected by the heat setting process and working temperature. It was proved that the mechanical properties have approximately linear relationship with temperature during the phase transition process. Due to its temperature- dependent mechanical properties, SMAMR that experiences the heat setting procedure is expected to be used in active vibration control systems with varying temperature-dependent stiffness and damping coefficients to provide superior vibration control performance.