The Effect of Frozen Ultrasonic Shot Peening Treatment on Two Way Characteristic at Shape Memory Alloy

Author:  Watanabe, Hattori, Handa, Yoshimi, Ikeda, Fujii
Source:  Conf Proc 2011: ICSP-11 South Bend, IN USA (pgs. 365-370)
Doc ID:  2011061
Year of Publication:  2011
Abstract:  
Abstract This paper shows the possibility whether shot peening treatment would be alternative method to bias spring. We conducted Ultrasonic Shot Peening (USP) at low temperature to induce compressive residual stress, which react as an outer force. Further to obtain the useful residual stress on SMA behavior, we developed the Frozen Ultrasonic Shot Peening (FUSP) treatment to meet the SMA function. As a result, the effective two way characteristic of SMA by frozen shot peening treatment was confirmed. And in order to confirm the durability of SMA, we conducted the fatigue test. Keywords: Shape Memory Alloy, Frozen Ultrasonic Shot Peening, Coverage, Fatigue Test