Characterization of shape memory alloys for safety mechanisms.

Technical Report · Sat Mar 01 04:00:00 EST 2008

DOI:https://doi.org/10.2172/943852· OSTI ID:943852

McLaughlin, Jarred T; Buchheit, Thomas Edward; Massad, Jordan Elias

Shape memory alloys (SMAs) are metals that exhibit large recoverable strains and exert large forces with tremendous energy densities. The behavior of SMAs is thermomechanically coupled. Their response to temperature is sensitive to their loading condition and their response to loading is sensitive to their thermal condition. This coupled behavior is not to be circumvented, but to be confronted and understood, since it is what manifests SMA's superior clamping performance. To reasonably characterize the coupled behavior of SMA clamping rings used in safety mechanisms, we conduct a series of experiments on SMA samples. The results of the tests will allow increased fidelity in modeling and failure analysis of parts.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 943852
• Report Number(s): SAND2007-8000
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ALLOYS
ENGINEERED SAFETY SYSTEMS
FASTENERS
Metals-Thermomechanical properties
PERFORMANCE TESTING
SHAPE MEMORY EFFECT
Shape memory alloys-Mechanical properties-Testing.