Principles and practices of adhesive bonded structural joints and repairs

Davis, Maxwell; Bond, David

doi:10.1016/s0143-7496(98)00026-8

Cited by 240 publications

(104 citation statements)

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“…By decreasing own cohesive strength and by decreasing the adhesion the destruction in the interface of the adhesiveadherent inevitably occurs which is shown itself by the adhesive failure area. These conclusions are supported by the research published by Davis and Bond (1999) who state that the main cause of the bond service time failure is the degradation of the interface between the adhesive and the adherent distinguished for the adhesive failure.…”

Section: Resultssupporting

confidence: 54%

Environmental degradation aspects influencing coach-working one-component epoxy adhesives

Müller¹,

Valášek²

2014

Res. Agric. Eng.

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Müller M., Valášek P., 2014. Environmental degradation aspects influencing coach-working one-component epoxy adhesives. Res. Agr. Eng., 60: 37-43.Degradation processes act on adhesive bonds behaviour in a negative way. The aim of experiments is to set the influence of liquid contaminants on strength changes of the adhesive bonds created with the adhesive used in the area of a coach-work construction. It is presumed according to a hypothesis that the adhesives applied in the construction of traffic and electricity means are resisting to liquid contaminants. The rain water, 33% solution of the rain-water and halite and the oil were used as the degradation mediums/environments. On the basis of evaluated experiments it can be said that resultant strength of the adhesive bonds decreases in the course of time at simultaneous affection of the environment. The measure of the strength decrease depends on specific conditions of the environment; however, it can be as much as 55%. The significant contaminant is the solution of the water and halite.

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Section: Resultssupporting

confidence: 54%

Environmental degradation aspects influencing coach-working one-component epoxy adhesives

Müller¹,

Valášek²

2014

Res. Agric. Eng.

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“…For increasing values of LO, the 2015 shows a steeper increase of Pm than the AV138, because it is extremely ductile (Table 2) and the joints fail with a significant degree of plastic flow in the adhesive layer [45]. In fact, adhesive plasticisation takes place at the overlap edges where stresses peak, together with redistribution of stresses in the adhesive layer towards the inner overlap regions [46,47]. Because of this issue, a nearly proportional relationship exists between Pm and LO in Fig.…”

Section: Joint Strengthmentioning

confidence: 99%

Modelling adhesive joints with cohesive zone models: effect of the cohesive law shape of the adhesive layer

Campilho

Banea

Neto

et al. 2013

International Journal of Adhesion and Adhesives

497

193

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Adhesively-bonded joints are extensively used in several fields of engineering. Cohesive Zone Models (CZM) have been used for the strength prediction of adhesive joints, as an add-in to Finite Element (FE) analyses that allows simulation of damage growth, by consideration of energetic principles. A useful feature of CZM is that different shapes can be developed for the cohesive laws, depending on the nature of the material or interface to be simulated, allowing an accurate strength prediction. This work studies the influence of the CZM shape (triangular, exponential or trapezoidal) used to model a thin adhesive layer in single-lap adhesive joints, for an estimation of its influence on the strength prediction under different material conditions. By performing this study, guidelines are provided on the possibility to use a CZM shape that may not be the most suited for a particular adhesive, but that may be more straightforward to use/implement and have less convergence problems (e.g. triangular shaped CZM), thus attaining the solution faster. The overall results showed that joints bonded with ductile adhesives are highly influenced by the CZM shape, and that the trapezoidal shape fits best the experimental data. Moreover, the smaller is the overlap length (LO), the greater is the influence of the CZM shape. On the other hand, the influence of the CZM shape can be neglected whe n using brittle adhesives, without compromising too much the accuracy of the strength predictions.

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“…Lightweight sandwich construction and structural bonded joints form a major proportion of modern aircraft. Bonded patches are also used to repair sandwich panels, cracks in metallic structure or to reinforce deficient structures [1]. The combined connections (bonded-welded, bonded-riveted and bonded--screwed) ensure high strength of the structures and are extremely economical, because they do not require any fixtures for use during the cementing process.…”

Section: Introductionmentioning

confidence: 99%

Adhesive weld bonding of interstitial free steel at spot welding for automotive application

Hayat¹,

Demir²,

Acarer³

et al. 2010

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In this study, the effect of adhesive bonding on strength and strength-ductility behaviour of welding joint in electrical resistance spot welding of 7315 grade IF steel sheets was investigated. 7315 grade (DIN EN 10130-1999) IF steels were adhesively bonded and different welding current and welding cycle conditions were performed in welding process. For adhesive bonding, Loctite Terostat 9120-Grey and Terostat 9220-Black grade adhesive bonders were used. Additionally, adhesively bonded joint samples were also performed without welding. Microstructure and tensile-shear tests of the adhesively bonded and welded materials were evaluated. Failure modes of the weld bonded tensile sheared samples were observed to be different from only welded samples. Experimental results have shown that with the increase in the weld time and weld current, the effect of the adhesive weld bonding on tensile performance also increases.K e y w o r d s : IF (Interstitial-Free) sheet steel, resistance spot welding, adhesive weld bonding, tension test

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Principles and practices of adhesive bonded structural joints and repairs

Cited by 240 publications

References 0 publications

Environmental degradation aspects influencing coach-working one-component epoxy adhesives

Environmental degradation aspects influencing coach-working one-component epoxy adhesives

Modelling adhesive joints with cohesive zone models: effect of the cohesive law shape of the adhesive layer

Adhesive weld bonding of interstitial free steel at spot welding for automotive application

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