Experimental validation of design concepts for laminated composite materials with thermal and/or mechanical coupling response

Rousseau, J., Verchery, G. and York, C.B. (2011) Experimental validation of design concepts for laminated composite materials with thermal and/or mechanical coupling response. In: 11th Deformation and Fracture of Composites and 5th Structural Integrity and Multi-Scale Modelling Conference, Cambridge, UK, 12-15 Apr 2011,

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Abstract

New and important experimental observations are presented, revealing that cylindrical room-temperature shapes are present in a broader range of coupled laminate classes than previously observed, and that contrary to current understanding, at least one class of coupled laminate developed into a saddle shape at a relatively high side-length-to-thickness ratio. Bistable and Pseudo-Bistable Snap-through behaviour are also observed in a large proportion of the 24 classes of coupled laminate. Pseudo-Bistable behaviour implies that a snap-though may be invoked, but that a force must be continuously applied to prevent snap-back; this behaviour has not been characterised previously in the literature. Hygro-thermally curvature-stable laminates, identified in 13 of the 24 classes of coupled laminate with standard ply angle orientations, have also been validated experimentally. Such laminates are immune to thermal warping distortions, which has previously made the exploitation of these unique mechanical coupling properties impractical.

Item Type:Conference Proceedings
Keywords:Pseudo-Bistable, Hygro-thermally curvature-stable, Laminates, Experimental validation
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:York, Dr Christopher
Authors: Rousseau, J., Verchery, G., and York, C.B.
Subjects:T Technology > T Technology (General)
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Copyright Holders:Copyright © 2011 The Authors
Publisher Policy:Reproduced with permission of the authors

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