Differential scanning calorimetry of superelastic Nitinol for tunable cymbal transducers
Differential scanning calorimetry of superelastic Nitinol for tunable cymbal transducers
复制标题
用于可调谐铙钹换能器的超弹性镍钛合金的差示扫描量热法
DOI：
10.1177/1045389x15591383
复制
发表时间：
2016
影响因子：
2.7
通讯作者：
M. Lucas
中科院分区：
文献类型：
--
作者：
A. Feeney;M. Lucas
最近的研究表明，使用差示扫描量热法估计超弹性镍钛合金的转变温度可能不准确，部分原因是材料中存在残余应力。超弹性镍钛合金被选为可调谐钹传感器的端盖材料。差示扫描量热法的精度最初是通过比较冷加工超弹性镍钛诺与退火热处理后相同材料的转变温度测量值来探测的，退火热处理是为了减轻制造过程中的应力。通过研究铙钹换能器的振动响应，使用电阻抗测量和激光多普勒振动测量法来进一步研究精度，以证明谐振频率的变化可以与使用差示扫描量热法测量的镍钛诺的转变温度相关。结果表明，对于超弹性镍钛诺必须谨慎使用差示扫描量热法，并且退火热处理可以允许随后使用差示扫描量热法提供准确的转变温度数据。
Recent research has shown that estimations of the transformation temperatures of superelastic Nitinol using differential scanning calorimetry can be inaccurate, in part, due to the residual stress in the material. Superelastic Nitinol is selected as the end-cap material in a tunable cymbal transducer. The differential scanning calorimetry accuracy is initially probed by comparing transformation temperature measurements of cold-worked superelastic Nitinol with the same material after an annealing heat treatment, administered to relieve stresses from fabrication. The accuracy is further investigated through a study of the vibration response of the cymbal transducer, using electrical impedance measurements and laser Doppler vibrometry to demonstrate that the change in resonant frequencies can be correlated with the transformation temperatures of the Nitinol measured using differential scanning calorimetry. The results demonstrate that differential scanning calorimetry must be used with caution for superelastic Nitinol, and that an annealing heat treatment can allow subsequent use of differential scanning calorimetry to provide accurate transformation temperature data.
DOI：
10.1088/1742-6596/382/1/012063
发表时间：
2012-08
期刊：
Journal of Physics: Conference Series
影响因子：
--
作者：
F. Bejarano;A. Feeney;M. Lucas
通讯作者：
F. Bejarano;A. Feeney;M. Lucas