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Flexural Analysis of Balsa Core Sandwich Composite: Failure mechanisms, Core grain orientation and Padding effect - Couverture souple

Phadatare, Avinash; Newaz, Golam

 
9783659180279: Flexural Analysis of Balsa Core Sandwich Composite: Failure mechanisms, Core grain orientation and Padding effect
Couverture souple
ISBN 10 : 3659180270 ISBN 13 : 9783659180279
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

A comprehensive investigation was undertaken to study failure mechanisms of sandwich composites and their influence on flexural behavior. Sandwich composite panels were cured from compression thermoforming of E-glass/epoxy skin and low density balsa wood core. Balsa core grain orientation is found to have major effect on flexural response and failure modes. Flexural behavior, failure mode and its sequence varies with different core grain orientations. Indentation, skin failure, core shear failure were dominant failure modes observed for various cases. Indentation of skin is a major concern under localized loading, as the skin failure is premature as compared to its normal compressive strength. Hence, the effect of padding on sandwich beam with soft core was also completed as part of this work. Finite element analysis for modeling this type of sandwich composite beam is studied and correlated. Several material parameters required for finite element analysis were determined from extensive testing and data from literature. Composite failure model and wood material model available in LS-Dyna were applied for skin and core of sandwich beam and analyzed under three-point flexural tests.

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Présentation de l'éditeur

A comprehensive investigation was undertaken to study failure mechanisms of sandwich composites and their influence on flexural behavior. Sandwich composite panels were cured from compression thermoforming of E-glass/epoxy skin and low density balsa wood core. Balsa core grain orientation is found to have major effect on flexural response and failure modes. Flexural behavior, failure mode and its sequence varies with different core grain orientations. Indentation, skin failure, core shear failure were dominant failure modes observed for various cases. Indentation of skin is a major concern under localized loading, as the skin failure is premature as compared to its normal compressive strength. Hence, the effect of padding on sandwich beam with soft core was also completed as part of this work. Finite element analysis for modeling this type of sandwich composite beam is studied and correlated. Several material parameters required for finite element analysis were determined from extensive testing and data from literature. Composite failure model and wood material model available in LS-Dyna were applied for skin and core of sandwich beam and analyzed under three-point flexural tests.

Biographie de l'auteur

This work was completed at Advanced Composite Mechanics lab and presented as thesis for completion of Master of Science in Mechanical Engineering at Wayne State University, Detroit. Prior to this, I worked at Safran Aerospace India and National Aerospace India. I completed Bachelor of Engineering at Visveswaraiah Technological University, Bangalore

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3659180270
ISBN 13 
9783659180279
Reliure
Broché
Nombre de pages
100
Coordonnées du fabricant
non disponible
Personne responsable
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9781249893912: Flexural Analysis of Balsa Core Sandwich Composite: Failure Mechanisms

Edition présentée

ISBN 10 :  1249893917 ISBN 13 :  9781249893912
Editeur : Proquest, Umi Dissertation Publi..., 2012
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