Influence of adhesive bond line thickness on joint strength

Davies, Peter; Sohier, Laurent; Cognard, Jean‐Yves; Bourmaud, Alain; Choqueuse, Dominique; Rinnert, Emmanuel; Créac’Hcadec, Romain

doi:10.1016/j.ijadhadh.2009.03.002

Cited by 139 publications

(51 citation statements)

References 36 publications

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“…However, for the joint with the scarf angle θ ¼90°, where pure tensile stress occurs at the interface, the ultimate tensile loading F u of DSJ is just governed by the cohesive strength in mode I (σ u,I ) of the adhesive. Davies et al [21] reported that a decrease of tension/shear loads as the adhesive thickness increases, which coincides with the results obtained in the present study (as shown in Fig. 7).…”

Section: Effect Of Geometrysupporting

confidence: 93%

Numerical analysis of effects of adhesive type and geometry on mixed-mode failure of adhesive joint

Liao

Huang

2016

International Journal of Adhesion and Adhesives

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a b s t r a c tIn the present study, the effects of the adhesive type and geometry (adhesive thickness and scarf angle) on mixed-mode failure of double scarf adhesive joint (DSJ) under uniaxial tensile loading were numerically examined using the finite element subroutine which coupled with a mixed-mode cohesive zone model (CZM). Especially, the effects of the adhesive type, which actually represent the influences of the cohesive parameters in mode I and mode II, on the mechanical properties of DSJ were discussed systematically. The numerical results reveal that the ultimate tensile loading and the necessary energy for failure of DSJ are controlled by the intrinsic components in mode I and mode II with different rates. Accordingly, the mathematical expressions for the ultimate tensile loading and the failure energy of DSJ with respect to the thickness-dependency cohesive parameters in two modes (I and II) and the scarf angle were deduced to identify each contribution in each mode component for a given type of adhesive. In addition, the numerical results also demonstrate that relationship between the interface damage level (corresponding to the ultimate tensile loading) and the adhesive thickness is not monotonous. However, as an increase of the adhesive thickness, the uniformity of damage level distribution is enhanced. Furthermore, the variation of the interface damage level with respect to the scarf angle is also not monotonous for each adhesive thickness. It can be concluded that the effects of the scarf angle and the adhesive thickness on the mixed-mode failure of DSJ are coupled rather than independently.

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Section: Effect Of Geometrysupporting

confidence: 93%

Numerical analysis of effects of adhesive type and geometry on mixed-mode failure of adhesive joint

Liao

Huang

2016

International Journal of Adhesion and Adhesives

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“…Davies et al [20] studied the nano-mechanical behavior of epoxy adhesive joints with varying thicknesses that were bonded to aluminum substrates. They used the nanoindentation technique to understand different aspects associated with the joint interphase such as modulus of the joints and substrate/adhesive.…”

Section: Investigations On Epoxy Based Coatingsmentioning

confidence: 99%

Nanomechanical Analysis of Hybrid Silicones and Hybrid Epoxy Coatings—A Brief Review

Tiwari¹

2012

ACES

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This review article is written on the investigations of nanomechanical properties of coatings by using nanoindentation techniques. The focus is on the studies that were conducted on epoxy polymer, silicones and their hybrid materials. The article describes a large number of developmental studies that are conducted on coatings. Materials properties such as nanoindentation hardness, modulus, scratch, wear and viscoelastic behavior have been described. Moreover, the article summarizes various studies that mention the use of different nanoparticles in coating formulations that could improve the mechanical strength and service life span of the coatings. The mode and mechanism of material's failure has been outlined and discussed.

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“…In order to address properly non linearity and failure of these materials, which were clearly not obtained with the Iosipescu test, shear tests using the modified Arcan fixture have been evaluated, Figure 6. The Arcan test was initially developed [8] to produce uniform plane stress and a modified 100 Advances in Experimental Mechanics VII version has been used recently, associated with image analysis, to characterize bonded joints [9]. Different geometries of samples have been investigated and finally 0.5*7,6*66mm 3 specimen bonded on aluminium support have been selected in order to minimize the effect due to the appearance of normal stress.…”

Section: Shear Testmentioning

confidence: 99%

Mechanical Behavior of Syntactic Foams for Deep Sea Thermally Insulated Pipeline

Choqueuse

Davies

Perreux³

et al. 2010

AMM

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Abstract.Ultra Deep offshore oil exploitation (down to 3000 meters depth) presents new challenges to offshore engineering and operating companies. Flow assurance and particularly the selection of insulation materials to be applied to pipe lines are of primary importance, and are the focus of much industry interest for deepwater applications. Polymeric and composite materials, particularly syntactic foams, are now widely used for this application, so the understanding of their behavior under extreme conditions is essential. These materials, applied as a thick coating (up to 10-15 cm), are subjected in service to:-high hydrostatic compression (up to 30 MPa) -severe thermal gradients (from 4°C at the outer surface to 150°C at the inner wall), and to high bending and shear stresses during installation. Damageable behavior of syntactic foam under service conditions has been observed previously [1] and may strongly affect the long term reliability of the system (loss of thermal properties).This study is a part of a larger project aiming to model the in-service behavior of these structures. For this purpose it is important to identify the constituent mechanical properties correctly [2,3]. A series of tests has been developed to address this point, which includes: -hydrostatic compression -shear loading using a modified Arcan fixture This paper will describe the different test methods and present results obtained for different types of syntactic foams.Introduction.

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Influence of adhesive bond line thickness on joint strength

Cited by 139 publications

References 36 publications

Numerical analysis of effects of adhesive type and geometry on mixed-mode failure of adhesive joint

Numerical analysis of effects of adhesive type and geometry on mixed-mode failure of adhesive joint

Nanomechanical Analysis of Hybrid Silicones and Hybrid Epoxy Coatings—A Brief Review

Mechanical Behavior of Syntactic Foams for Deep Sea Thermally Insulated Pipeline

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