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Lecture Notes for AE 598 - Special Topics at Illinois (UIUC)
Lab Information
| Material Type: | Lab |
| Professor: | Staff |
| Class: | AE 598 - Special Topics |
| Subject: | Aerospace Engineering |
| University: | University of Illinois - Urbana-Champaign |
| Term: | Spring 1996 |
Sample Document Text
Shape Memory Alloys
1
History of shape memory alloys
1932: Discovery of reversible martensite to austenite
phase transformation in Au-Cd alloying system by
Chang & Read
1951: Discovery of recovery of deformed shape in Cu
based alloys by Genevray
1962: Discovery of shape memory Effect in Ni-Ti
alloying system
1970: First Commercial Use of Nitinol in F14 Tomcat
2
Discovery of shape memory Effect in Ni-Ti alloying system
by William G. Buhler in Naval Ordnance Laboratory
Ni.Ti.NOL
3
SMA
SMA: Shape Memory Alloy
Exhibit thermomechanical coupling
Heating and cooling produce large mechanical
deformations
Thermomechanical strains are typically 5-10%
Exhibit a shape memory effect in which a certain shape
is recoverable upon thermomechanical transformation
4
Shape Memory Alloys
http://www-civ.eng.cam.ac.uk/dsl/sma/spring.gif http://www.talkingelectronics.com.au/Projects/Nitinol/Nitinol-1.html
One way Shape memory effect Two way Shape memory effect
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