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Interfacial Stresses in Shape Memory Alloy Reinforced Composites

Hiremath, SR and Prajapati, Maulik and Rakesh, S and Mahapatra, Roy D (2014) Interfacial Stresses in Shape Memory Alloy Reinforced Composites. In: Conference on Behavior and Mechanics of Multifunctional Materials and Composites, MAR 10-12, 2014, San Diego, CA.

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Official URL: http://dx.doi.org/ 10.1117/12.2047331

Abstract

Debonding of Shape Memory Alloy (SMA) wires in SMA reinforced polymer matrix composites is a complex phenomenon compared to other fabric fiber debonding in similar matrix composites. This paper focuses on experimental study and analytical correlation of stress required for debonding of thermal SMA actuator wire reinforced composites. Fiber pull-out tests are carried out on thermal SMA actuator at parent state to understand the effect of stress induced detwinned martensites. An ASTM standard is followed as benchmark method for fiber pull-out test. Debonding stress is derived with the help of non-local shear-lag theory applied to elasto-plastic interface. Furthermore, experimental investigations are carried out to study the effect of Laser shot peening on SMA surface to improve the interfacial strength. Variation in debonding stress due to length of SMA wire reinforced in epoxy are investigated for non-peened and peened SMA wires. Experimental results of interfacial strength variation due to various L/d ratio for non-peened and peened SMA actuator wires in epoxy matrix are discussed.

Item Type: Conference Proceedings
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Additional Information: Copy right for this article belongs to the SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 22 Aug 2014 11:37
Last Modified: 22 Aug 2014 11:37
URI: http://eprints.iisc.ernet.in/id/eprint/49702

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