Influence of the Resin Layer Thickness at the Interface of Hybrid Metal-composite Co-cured Joints

Bernardo Zuccarello, Andrea Russo

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2 Citazioni (Scopus)

Abstract

As discussed in literature, the accurate analysis of the modern co-cured joints between composite materials or between a metal and a composite material (hybrid joints) is complicated by the influence of the interface resin layer on the interface singular stress field. In such joints, in fact, there is not a proper adhesive layer and the thickness of the resin layer, that plays the role of the adhesive, is not constant due to the presence of the reinforcing fibers in the composite adherent. For this reason several authors assume that a generic co-cured joint can not be studied as a simple bi-material joint, without considering the particular characteristics of the actual resin layer. This problem is also involved into the development of reliable design methods able to give accurate predictions of the joint efficiency. In this work, by theoretical analyses performed by using the Lekhnitskii theory, numerical simulations carried out by means of the boundary element method and experimental investigations based on the combined use of the generalized Dundurs parameters and digital photoelasticity, the influence of the resin layer on the singular stress field at the interface of a generic hybrid metal-composite joint, has been investigated.© 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11
Lingua originaleEnglish
pagine (da-a)3775-3786
Numero di pagine12
RivistaProcedia Engineering
Volume10
Stato di pubblicazionePublished - 2011

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Resins
Composite materials
Metals
Photoelasticity
Boundary element method
Adhesives
Fibers
Computer simulation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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title = "Influence of the Resin Layer Thickness at the Interface of Hybrid Metal-composite Co-cured Joints",
abstract = "As discussed in literature, the accurate analysis of the modern co-cured joints between composite materials or between a metal and a composite material (hybrid joints) is complicated by the influence of the interface resin layer on the interface singular stress field. In such joints, in fact, there is not a proper adhesive layer and the thickness of the resin layer, that plays the role of the adhesive, is not constant due to the presence of the reinforcing fibers in the composite adherent. For this reason several authors assume that a generic co-cured joint can not be studied as a simple bi-material joint, without considering the particular characteristics of the actual resin layer. This problem is also involved into the development of reliable design methods able to give accurate predictions of the joint efficiency. In this work, by theoretical analyses performed by using the Lekhnitskii theory, numerical simulations carried out by means of the boundary element method and experimental investigations based on the combined use of the generalized Dundurs parameters and digital photoelasticity, the influence of the resin layer on the singular stress field at the interface of a generic hybrid metal-composite joint, has been investigated.{\circledC} 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11",
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author = "Bernardo Zuccarello and Andrea Russo",
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TY - JOUR

T1 - Influence of the Resin Layer Thickness at the Interface of Hybrid Metal-composite Co-cured Joints

AU - Zuccarello, Bernardo

AU - Russo, Andrea

PY - 2011

Y1 - 2011

N2 - As discussed in literature, the accurate analysis of the modern co-cured joints between composite materials or between a metal and a composite material (hybrid joints) is complicated by the influence of the interface resin layer on the interface singular stress field. In such joints, in fact, there is not a proper adhesive layer and the thickness of the resin layer, that plays the role of the adhesive, is not constant due to the presence of the reinforcing fibers in the composite adherent. For this reason several authors assume that a generic co-cured joint can not be studied as a simple bi-material joint, without considering the particular characteristics of the actual resin layer. This problem is also involved into the development of reliable design methods able to give accurate predictions of the joint efficiency. In this work, by theoretical analyses performed by using the Lekhnitskii theory, numerical simulations carried out by means of the boundary element method and experimental investigations based on the combined use of the generalized Dundurs parameters and digital photoelasticity, the influence of the resin layer on the singular stress field at the interface of a generic hybrid metal-composite joint, has been investigated.© 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11

AB - As discussed in literature, the accurate analysis of the modern co-cured joints between composite materials or between a metal and a composite material (hybrid joints) is complicated by the influence of the interface resin layer on the interface singular stress field. In such joints, in fact, there is not a proper adhesive layer and the thickness of the resin layer, that plays the role of the adhesive, is not constant due to the presence of the reinforcing fibers in the composite adherent. For this reason several authors assume that a generic co-cured joint can not be studied as a simple bi-material joint, without considering the particular characteristics of the actual resin layer. This problem is also involved into the development of reliable design methods able to give accurate predictions of the joint efficiency. In this work, by theoretical analyses performed by using the Lekhnitskii theory, numerical simulations carried out by means of the boundary element method and experimental investigations based on the combined use of the generalized Dundurs parameters and digital photoelasticity, the influence of the resin layer on the singular stress field at the interface of a generic hybrid metal-composite joint, has been investigated.© 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11

KW - co-cured joint; composite material; photoelasticity; stress intensity factor.

UR - http://hdl.handle.net/10447/61810

M3 - Article

VL - 10

SP - 3775

EP - 3786

JO - Procedia Engineering

JF - Procedia Engineering

SN - 1877-7058

ER -