Active control of interlaminar stresses in laminated composites by through-thickness thermal gradients

Taehyoun Kim, D. Steadman, Sathya V. Hanagud, S. Atluri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this paper, we propose a method to actively control interlaminar stresses near the free edges of laminated composites by through-thickness thermal gradients. Theoretical solutions are given for optimal steady-state through-thickness temperature distributions under uniaxial loading that are required to eliminate or reduce the interlaminar stresses below a prescribed level. The optimal solutions are obtained by minimizing appropriate performance indices that are functions of the far- field properties, with respect to the through-thickness temperature differences. In the second part, an experimental investigation is conducted on a glass/epoxy cross-ply laminate with embedded piezoelectric sensors and a thermal heater. Through the experiment, a feasibility of the thermal control of interlaminar stresses is demonstrated.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages444-455
Number of pages12
ISBN (Print)0819417912
StatePublished - 1995
EventSmart Structures and Materials 1995: Mathematics and Control in Smart Structures - San Diego, CA, USA
Duration: Feb 27 1995Mar 1 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2442
ISSN (Print)0277-786X

Conference

ConferenceSmart Structures and Materials 1995: Mathematics and Control in Smart Structures
CitySan Diego, CA, USA
Period02/27/9503/1/95

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