Engineering applications of NiTi shape memory alloys

This paper considers the use of martensitic NiTi shape memory alloys (SMAs) for technical applications in drive technology with a focus on bearing and gear technology. Within bearing technology, SMAs can be applied for the clearance adjustment of taper roller bearings using the extrinsic two-way eff...

Full description

Saved in:
Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2008-05, Vol.481, p.598-601
Main Authors: Predki, Wolfgang, Knopik, Adam, Bauer, Björn
Format: Article
Language:English
Subjects:
Bearing technology
Clearance adjustment
Compression
Extrinsic two-way effect
Mechanical dimensioning
NiTi shape memory alloys
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper considers the use of martensitic NiTi shape memory alloys (SMAs) for technical applications in drive technology with a focus on bearing and gear technology. Within bearing technology, SMAs can be applied for the clearance adjustment of taper roller bearings using the extrinsic two-way effect. First constructive solutions show the axial motion of the outer ring to compensate the decreasing axial clearance as a result of different temperatures between shaft and housing. To compensate different thermal expansions SMAs offer improvements using the extrinsic two-way effect. With the help of steel springs the external load the SMA is working against can be realized. With given information about the stress–strain behavior for NiTi SMA under axial compression the necessary forces and compressions to reach the demanded elongations can be calculated.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2006.12.195