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South African Journal of Science

versão On-line ISSN 1996-7489
versão impressa ISSN 0038-2353

Resumo

SANUSI, Kazeem O.; AYODELE, Olukayode L.  e  KHAN, Mohamed T.E.. A concise review of the applications of NiTi shape-memory alloys in composite materials. S. Afr. j. sci. [online]. 2014, vol.110, n.7-8, pp.1-5. ISSN 1996-7489.

Composite materials have increasingly been used in construction and in the aerospace and automotive industries because they are lightweight, strong and corrosion resistant, and because their anisotropic properties can be controlled; maintenance costs are also low. However, there is a growing demand for improved composite materials which have 'smart' capabilities, that is, they are able to sense, actuate and respond to the surrounding environment. Shape-memory alloys (SMAs) possess sensing and actuating functions. Embedding SMAs into composite materials can create smart or intelligent composites. Amongst the commercially available SMAs, NiTi alloys - in the form of wires, ribbons or particles - are the most widely used because of their excellent mechanical properties and shape-memory performance. These materials have found application in broad fields of engineering and science as a result of their superior thermomechanical properties. Here we review the use of NiTi SMAs in applications such as vibration control, shape control, position control and adaptive stiffening.

Palavras-chave : composites; smart materials; shape-memory alloys; shape-memory effect; pseudoelasticity.

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