Morphing and shape control using unsymmetrical composites

C. R. Bowen, R Butler, R. Jervis, H. A. Kim, A. I. T. Salo

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Unsymmetrical carbon fiber/epoxy composites with bonded piezoelectric actuators are investigated as a means to shape or morph, the composite structures. Both a cantilever and unsupported laminate structure are examined along with their response to applied strains (from piezoelectric actuators) and applied mechanical load; with particular emphasis on the characterization of shape/deflection, the influence of externally applied mechanical loads and methods of reversing or promoting snap-through of these materials from one stable state to another. A variety of shape change/actuation modes for such structures have been identified namely, (i) reversible actuation by maintaining a constant stable state using piezoelectric actuation, (ii) an increased degree of shape change by irreversible snap-through using piezoelectric actuation and (iii) reversible snap-through using combined piezoelectric actuation and an externally applied load.
Original languageEnglish
Pages (from-to)89-98
Number of pages10
JournalJournal of Intelligent Material Systems and Structures
Volume18
Issue number1
DOIs
Publication statusPublished - 2007

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