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Proceedings Paper

Structural applications of SMA/superelastic materials
Author(s): Eugene I. Rivin; Gautam Sayal; Prithvi Raj Singh Johal
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Paper Abstract

SMA and superelastic materials (SEM) are mostly used for low force/large displacements applications involving tensile or bending modes of loading. The paper describes experiments on radial compression of SMA and superelastic wires and tubes between flat loading surfaces. Elastic (recoverable) deformations up to 22.5% with high damping under loads in the KN/mm range for solid wires and 10-100 N/mm range for tubes of OD = 0.4-2 mm have been observed. The recoverable deformation as great as 60% has been measured on a thin-walled SEM tube. This phenomenon was named a "Giant Superelasticity Effect" (GSE). The experiments were performed in a broad range of loading rates. Stainless steel specimens were also tested for comparison. A close-form analysis for thin-wall tubes and some realized and potential applications of GSE are described.

Paper Details

Date Published: 16 May 2005
PDF: 10 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.596511
Show Author Affiliations
Eugene I. Rivin, Wayne State Univ. (United States)
Gautam Sayal, Wayne State Univ. (United States)
Prithvi Raj Singh Johal, Wayne State Univ. (United States)


Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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