Cantrell-presentation-Cure-referencing-Method

Cantrell-presentation-Cure-referencing-Method -...

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RESIDUAL STRAIN MEASUREMENT IN OMPOSITES USING CURE- Presentation by: Jason Cantrell EAS 6939 COMPOSITES USING CURE REFERENCING METHOD 1/31/11 by: P.G Ifju, X. Niu, B.C Kilday, S.-C. Liu & S.M. Ettinger
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Background Residual stress results from thermal mismatch between fiber and matrix Also results from chemical shrinkage of matrix on polymerization Thermal characteristics of composites are directional nd depend upon fiber orientation. and depend upon fiber orientation. These behaviors influence the fiber and matrix differently and are based upon fiber orientation angle. If thermal and chemical characteristics are not taken into consideration during stacking the laminate may arp significantly warp significantly.
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Materials Tested S4/3501- graphite/epoxy and plain weave AS4/3501 6 graphite/epoxy and plain weave fabric cases tested 4 cases tested Unidirectional - [0 16 ] T ross ly [0 90 0 90 Cross-ply [0 2 /90 2 /0 2 /90 2 ] S Angle-ply [0 2 /45 2 /0 2 /45 2 ] S 8 l l 18-ply woven panel
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Cantrell-presentation-Cure-referencing-Method -...

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