Critical assessment of weld-bonded technologies

Darwish, S.M.; Ghanya, A

doi:10.1016/s0924-0136(00)00592-6

Cited by 70 publications

(51 citation statements)

References 6 publications

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“…Nugget size increased when weld time and weld current were enhanced. It is known that the increase in energy input caused by an enhancement in effective current and weld time increased the nugget size of the weld [8][9][10][11][12][13][14]. Similar studies on galvanized interstitial free (cold formable) steel sheets with austenitic stainless steel sheets were carried out by Vural and Akkus [18].…”

Section: Resultsmentioning

confidence: 99%

“…The Body-in-white is assembled by means of spot welds in use by industry today [8][9][10][11][12][13][14]. Weld bonding is a modern and promising metal joining technology.…”

Section: Introductionmentioning

confidence: 99%

“…automotive and train industry) is still in an early stage and will most likely be much more widespread when more knowledge based on systematic investigations of the process has been obtained [4]. So far, descriptions of the experimental load--displacement behaviour of the weld-bonded joints have been found only in a few studies for automotive materials, and for IF steel [2,4,8]. Therefore, in this study, adhesive weld bonding behaviour of IF steel which is a very important material particularly for automotive industry has been investigated using different welding parameters and two different grade adhesive bonders.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…The Body-in-white is assembled by means of spot welds in use by industry today [8][9][10][11][12][13][14]. Weld bonding is a modern and promising metal joining technology.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Hayat¹,

Demir²,

Acarer³

et al. 2010

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“…Weld-bond는 강판 표면에 접착제를 도포하고 저항 점용접을 실시한 후, 경화 공정을 거치게 된다 [2][3][4][5] . Weld-bond는 저항 점용 접부의 인장전단강도(tensile shear strength) 측면과 자동차 차체의 충돌 에너지 특성 등이 매우 우수하게 나타나는 것으로 보고되고 있다 [5][6][7][8][9] .…”

Section: 서 론unclassified

A study on tensile shear characteristics for weld-bonded 1.2GPa grade TRIP steels with changes in nugget diameter for automotive body application

Choi¹,

Park²,

Kim³

et al. 2015

Journal of Welding and Joining

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High strength steels have been continually being developed to improve in fuel economy in automotive and ensure safety of passengers. New bonding and welding methods have been required for improving weldability on high strength steels. In this study, resistance spot welding and Weld-bond with nugget diameters of 4.0mm, 5.0mm, 6.0mm and 7.0mm were produced and tested, respectively. In order to confirm the effect of nugget diameters on tensile shear characteristic of the Weld-bond, tensile shear characteristics of Weld-bond were compared with those of resistance spot welding and adhesive bonding. Peak load of Weld-bond were increased as the nugget diameter increases. After appearing maximum peak load continuous fracture followed with second peak owing to load being carried by resistance spot weldment. Fracture modes of the adhesive layer in Weld-bond fractures were represented by mixed fracture mode, which are cohesive failure on adhesive part and button failure at resistance spot welds. The results showed that the tensile shear properties can be improved by applying Weld-bond on TRIP steel, and more apparent with nugget diameter higher than 5√t.

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“…Additionally, bonded joints are very sensitive to the surface treatment, service temperature, humidity and ageing [3][4][5]. Hybrid joints combine adhesive bonding with another joining technique (e.g., weld-bonded, rivet-bonded or fastenbonded unions), and have previously been considered to improve damage tolerance (either static or fatigue) or repair of structures, combined with ease of fabrication because of adhesive curing without fixtures requirement [6,7]. Besides, the joint geometry and materials can be adjusted for a specific application, depending on design goals and service conditions [8].…”

Section: Introductionmentioning

confidence: 99%

Optimization study of hybrid spot-welded/bonded single-lap joints

Campilho

Pinto²,

Banea

et al. 2012

International Journal of Adhesion and Adhesives

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Joining of components with structural adhesives is currently one of the most widespread techniques for advanced structures (e.g., aerospace or aeronautical). Adhesive bonding does not involve drilling operations and it distributes the load over a larger area than mechanical joints. However, peak stresses tend to develop near the overlap edges because of differential straining of the adherends and load asymmetry. As a result, premature failures can be expected, especially for brittle adhesives. Moreover, bonded joints are very sensitive to the surface treatment of the material, service temperature, humidity and ageing. To surpass these limitations, the combination of adhesive bonding with spot-welding is a choice to be considered, adding a few advantages like superior static strength and stiffness, higher peeling and fatigue strength and easier fabrication, as fixtures during the adhesive curing are not needed. The experimental and numerical study presented here evaluates hybrid spot-welded/bonded single-lap joints in comparison with the purely spot-welded and bonded equivalents. A parametric study on the overlap length (LO) allowed achieving different strength advantages, up to 58% compared to spot-welded joints and 24% over bonded joints. The Finite Element Method (FEM) and Cohesive Zone Models (CZM) for damage growth were also tested in Abaqus s to evaluate this technique for strength prediction, showing accurate estimations for all kinds of joints.

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Critical assessment of weld-bonded technologies

Cited by 70 publications

References 6 publications

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

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

A study on tensile shear characteristics for weld-bonded 1.2GPa grade TRIP steels with changes in nugget diameter for automotive body application

Optimization study of hybrid spot-welded/bonded single-lap joints

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