摘要
研究了提高形状记忆合金（ＳＭＡ）工作频率的物理方法——研制细丝。给出了拉拔细丝的工艺流程，从理论上分析了在不同的加热和冷却过程中丝径与响应速度的关系，对２种丝径的ＳＭＡ丝进行了性能对比测试。同时测定了２种丝径的ＳＭＡ的响应速度。结果表明，丝径的减小对丝的相变性能，如最大恢复应变、最大恢复应力等影响不大，但可显著提高其动作频率。
A method of improving the work frequency of shape memory alloy wire actuators, developing fine wires, is investigated. The relation between the response frequency and the diameter is analyzed theoretically in different processes of heating and cooling a wire. The theoretical predictions are validated with experiments. The results show that the decrease of the diameter of a wire can not affect its phase transformation properties, but its work frequency can be increased markedly.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1999年第2期148-151,共4页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金
航空科学基金
博士后科学基金
关键词
形状记忆合金
驱动器
响应频率
智能结构
shape memory alloy, actuator, work frequency, smart structure
