Abstract
Thermally induced transformation fatigue experiments of Shape Memory Alloy (SMA) actuator wires are performed under different heat treatment conditions and different stress levels. The effect of various heat treatment conditions on the thermal transformation fatigue life of Ti-Ni-Cu (K-alloy) SMA wires is analyzed first and the optimal heat treatment condition is found. Results are then presented for the plastic strain accumulation as a function of the number of cycles to failure for different stress levels, and a relationship similar to the Manson-Coffin law is considered. Finally, fatigue results for partial phase transformation cycles are discussed.
Volume Subject Area:
Properties of Shape Memory Alloys
This content is only available via PDF.
Copyright © 2000 by ASME
You do not currently have access to this content.
