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Proceedings Paper

High passive damping in a NiTi shape memory alloy fiber aluminum metal matrix composite
Author(s): William D. Armstrong; Per G. Reinhall
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Paper Abstract

Vibration control in structures often requires the addition of viscoelastic constrained layer damping treatments. In critical applications, however, the low strength of the viscoelastic material and the threat of delamination prevent the use of these treatments. In this paper we present a means of how to overcome these difficulties by using high strength shape NiTi fibers to increase the damping of aluminum structures. Specifically, we show that the introduction of high strength, shape memory alloy fibers into an aluminum beam can result in a significant increase in the passive damping response of the beam. The objective of our research is to develop passive and active structural materials that can be sued in applications that demand high loss factors, strength, and high reliability. The development of the NiTi fiber reinforced aluminum matrix composite beam is a first important step towards achieving this objective.

Paper Details

Date Published: 14 June 2000
PDF: 7 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388234
Show Author Affiliations
William D. Armstrong, SUNY/Binghamton (United States)
Per G. Reinhall, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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