Mechanical Properties of NiTi Shape Memory Alloy Particle/Epoxy Composites
Mechanical Properties of NiTi Shape Memory Alloy Particle/Epoxy Composites
复制标题
NiTi形状记忆合金颗粒/环氧树脂复合材料的力学性能
DOI：
10.2472/jsms.55.230
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Iwamoto
中科院分区：
文献类型：
--
作者：
Run;Q. Ni;T. Natsuki;K. Kurashiki;M. Iwamoto
形状记忆合金具有形状记忆效应、伪弹性、高阻尼等优异性能，具有传感和驱动功能。将SMA的特性与其他材料相结合，可以通过利用SMA的独特特性来创建智能或智能复合材料。本文制备了NiTi合金颗粒填充ER 3环氧树脂复合材料，并对其力学性能进行了研究。结果表明，由于SMA颗粒的加入，SMA/ER 3复合材料的抗弯刚度有所提高。特别是在高温区，储能模量随填料含量的增加而显著增加。实验结果表明，仅添加3.5%的SMA填料到环氧树脂导致增加的储能模量大于环氧树脂本体约4倍。SMA相变温度在120°C左右时储能模量达到最大。SMA/ER 3复合材料的损耗因子随SMA颗粒含量的增加而增大。此外，基于Hashin-Shtrikman理论，建立了含SMA颗粒层合板的动态力学性能预测模型。通过与实验结果的对比，得到了合理的动力学行为预测。
Shape memory alloys (SMAs) possess both sensing and actuating functions due to their shape memory effect, pseudo-elasticity, high damping capability and other remarkable properties. Combining the properties of SMAs with other materials can create intelligent or smart composites by utilizing the unique properties of SMAs. In this paper, ER3 epoxy resin composites filled with NiTi alloy particles were fabricated and their mechanical properties were investigated. As a result, owing to the addition of SMA particles, the flexural rigidity of SMA/ER3 composites raises. Especially, the storage modulus increases remarkably with increasing filler content at higher temperature region. The experimental results show that the addition of just 3.5% of SMA fillers to epoxy resin resulted in increased storage modulus larger than epoxy resin bulk by about four times. The storage modulus reaches to the maximum at the SMA phase transform temperature of approximate 120°C. The loss factor of SMA/ER3 composites increases with the increment of SMA particles contents. Moreover, a model of the laminated plates with SMA particles is presented to predict the dynamic mechanical properties based on the Hashin-Shtrikman’s theory. Compared to the experimental results, the reasonable prediction of the dynamic behaviors is obtained.