Microstructure and damping characteristics of Ti50Ni24.9Cu25Y0.1 shape memory alloy

2013 ◽  
Vol 95 ◽  
pp. 125-127 ◽  
Author(s):  
Y.Y. Luo ◽  
Y.Q. Zhao ◽  
Y.F. Lu ◽  
Z.P. Xi ◽  
W.D. Zeng
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Damping Characteristics

Investigation of Damping Characteristics on Copper-Based Shape Memory Alloy Frictional Damper in Boring Process

2021 ◽  
Author(s):  
Chockalingam Singaravelu ◽  
Prasannavenkadesan Varatharajan ◽  
Ganesan Ramu ◽  
Karthikeyan Alagappan
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Damping Characteristics

Processing of Single-Stage Bellows of TiNi Shape Memory Alloy Using Rubber Bulge Method

2005 ◽  
Vol 475-479 ◽  
pp. 2059-2062 ◽  
Author(s):  
Hiromasa Semba ◽  
Nagatoshi Okabe ◽  
Toru Yamaji ◽  
Keisuke Okita ◽  
Kiyoshi Yamauchi
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Cold Working ◽  
Large Strain ◽  
Longitudinal Direction ◽  
Single Stage ◽  
Damping Characteristics ◽  
Annealing Conditions ◽  
New Type ◽  
Typical Shape

The bellows formed of TiNi shape memory alloy is proposed as a new type of seismic protection device. The bellows structure is known to have lower rigidity along the longitudinal direction through effect of its shape. On the other hand, TiNi is known to be one of the most typical shape memory alloys, which have high damping characteristics for dynamics engaged in its twin formation under martensite state and have the ability to recover completely from the large strain (even such as 8%) after unloaded and or heated. This paper describes a processing method of a single-stage bellows of TiNi shape memory alloy using rubber bulge method. Thin-walled TiNi tubes subjected to cold working were prepared. Several annealing conditions for the process were examined and the appropriate one was discussed. Then the rubber bulge method of displacement control was introduced. Finally, the procedure of the process including heat treatment was clarified.

Damping Characteristics of Cold-Rolled and Annealed Equiatomic TiNi Shape Memory Alloy

2006 ◽  
Vol 319 ◽  
pp. 9-16 ◽  
Author(s):  
S.H. Chang ◽  
Shi Kang Wu
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Storage Modulus ◽  
Damping Capacity ◽  
Damping Characteristics ◽  
Annealing Conditions ◽  
Cold Rolled ◽  
Tan Δ ◽  
Short Time ◽  
And Storage

Damping capacity and storage modulus of cold-rolled and annealed Ti50Ni50 SMA are systematically investigated by DSC and DMA tests. The specimens annealed at 500 oC for 1 ~ 72 h and annealed at 650 oC for short time can all reach a high tan δ value and a deep storage modulus minimum during B2→R transformation. This reveals that the occurrence of R-phase can strongly soften the storage modulus and thus promote the damping capacity of Ti50Ni50 SMA. The specimens anneaed at 650 oC for longer time have a lower tan δ value due to the diminishing of R-phase formation. Therefore, a good damping capacity associated with a significant softening storage modulus can be acquired by suitably control the annealing conditions of cold-rolled Ti50Ni50 to generate adequate of R-phase premartensite.

Damping characteristics of a spray-deposited shape memory alloy beam

2014 ◽  
Vol 333 (15) ◽  
pp. 3356-3366 ◽  
Author(s):  
Wonsuk Kim ◽  
Alan Argento ◽  
Pravansu S. Mohanty
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Damping Characteristics
Sign in / Sign up

Export Citation Format

Share Document