Material characterization of active fiber composites for integral twist-actuated rotor blade application

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DOIResolve DOI: http://doi.org/10.1088/0964-1726/13/5/020
AuthorSearch for: ; Search for:
TypeArticle
Journal titleSmart Materials and Structures
Volume13
Issue5
Pages11551165
AbstractThe primary objective of this work was to perform material characterization of the active fiber composite (AFC) actuator system for the Boeing active material rotor (AMR) blade application. The purpose of the AMR was to demonstrate active vibration control in helicopters through integral twist-actuation of the blade. The AFCs were a new structural actuator system consisting of piezoceramic fibers embedded in an epoxy matrix and sandwiched between interdigitated electrodes to enhance actuation performance. These conformable actuators were integrated directly into the blade spar laminate as active plies within the composite structure to perform structural control. Therefore, extensive electromechanical material characterization was required to evaluate AFCs both as actuators and as structural components of the blade. The characterization tests designed to extract important electromechanical properties under simulated blade operating conditions included nominal actuation tests, stress–strain tests and actuation under tensile load tests. This paper presents the test results as well as the comprehensive testing procedure developed to evaluate the relevant properties of the AFCs for structural application. The material characterization tests provided an invaluable insight into the behavior of the AFCs under various electromechanical conditions. The results from this comprehensive material characterization of the AFC actuator system supported the design and operation of the AMR blades scheduled for wind tunnel tests.
Publication date
PublisherIOP Publishing Ltd
LanguageEnglish
AffiliationNRC Institute for Aerospace Research; National Research Council Canada
Peer reviewedYes
IdentifierS0964-1726(04)83334-2
NRC numberSMPL-2005-0219
NPARC number8929527
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Record identifierc431a452-b9dc-4141-be42-fdafe71e82e6
Record created2009-04-23
Record modified2016-06-03
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