形状記憶複合材料の2方向曲げ挙動

Abstract

The shape memory composite (SMC) with shape memory alloy (SMA) and shape memory polymer (SMP) was fabricated，and the two-way bending deformation and recovery force were investigated. The results obtained can be summarized as follows. (1) Two kinds of SMA tapes which show the shape memory effect (SME) and superelasticity (SE) were heat-treated to memorize the round shape，respectively. The shape-memorized round SMA tapes were arranged facing in the opposite directions and were sandwiched between the SMP sheets. The SMC belt can be fabricated by using the appropriate factors: the number of SMP sheets，pressing force，heating temperature and holding time. (2) The two-way bending deformation with an angle of 56 degrees in the fabricated SMC belt is observed based on the SME and SE of SMA tapes during heating and cooling. (3) If the SMC belt is heated and cooled by keeping the bent form，recovery force increases during heating and degreases during cooling based on the two-way properties of the SMC. (4) The development and application of high-functional SMCs are expected by the combination of SMA and SMP with various kinds of phase transformation temperatures，volume fractions，configurations and heating-cooling rates.