Behavior of adhesively bonded coated steel for automotive applications under impact loads

Schiel, Manuel; Kreling, Stefan; Unger, Claudia; Fischer, Fabian; Dilger, Klaus

doi:10.1016/j.ijadhadh.2014.07.009

Cited by 18 publications

(9 citation statements)

References 4 publications

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“…In case of the painted surface with silver metallic colour a lap-shear strength of approximately 6 MPa was recorded with a cohesive failure observed solely in the silver paint layer. Further experimental investigations by Schiel et al [361] using identical configurations with epoxy adhesives demonstrated higher strength even with non-metallic painted probes reaching strength values of lap-shear strength of 9 MPa for quasi-static loading. Higher rate loading in lap-shear as well as in T-peel configuration showed a comparable trend.…”

Section: Influence Of Coatings and Surface Pre-treatment On Adhesive Bondsmentioning

confidence: 92%

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Testing mechanical performance of adhesively bonded composite joints in engineering applications: an overview

Budzik

Wolfahrt

Reis

et al. 2021

The Journal of Adhesion

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The development of new adhesives has allowed to expand the application of bonding into the most diverse industrial fields. This review article presents the commonly used experimental methods for the investigation of mechanical performance of adhesively bonded joints in the aerospace, wind energy, automotive and civil engineering sectors. In these sectors, due to their excellent intrinsic properties, composite materials are often used along with conventional materials such as steel, concrete and aluminium. In this context, and due to the limitations that the traditional joining techniques present, adhesive joints are an excellent alternative. However, standardized experimental procedures are not always applicable for testing representative adhesive joints in these industries. Lack of relevant regulations across the different fields is often overcome by the academia and companies' own regulations and standards. Additional costs are thus mitigated to the industrial sectors in relation with the certification process which effectively can deprive even the biggest companies from promoting adhesive bonding. To ensure continuous growth of the adhesive bonding field the new international standards, focusing on actual adhesive joints' performance rather than on specific application of adhesive joints are necessary.

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Section: Influence Of Coatings and Surface Pre-treatment On Adhesive Bondsmentioning

confidence: 92%

“…treat. Tensile [359,[361][362][363] [359, [361][362][363] [364] [359,361] Lap Shear [356,362,365] [356,362,366] [364,365] [359,361,367,368] Lap Shear cont. [369,370] -- [365,371,372] T-peel [373] [361,374] - [361,374] Multiaxial [359,361,375] - [364] -…”

Section: Testing Methodsmentioning

confidence: 99%

Testing mechanical performance of adhesively bonded composite joints in engineering applications: an overview

Budzik

Wolfahrt

Reis

et al. 2021

The Journal of Adhesion

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“…Other authors also observed this failure pattern. 21,22 Wieczorek et al 4 showed by means of a phase analysis that the weak part of the AlSi coating lies at the interfacial boundary of the intermetallic phases Al 5 Fe 2 and AlFe. This confirms the failure pattern observed here.…”

Section: Fracture Pattern Characterizationmentioning

confidence: 99%

On the strength of joints of metal-plastic composites of hot-formed steel with an AlSi coating and a thermosetting fiber reinforced compression material

Wehler

Moritz

Fischer

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Novel manufacturing techniques and application of new hybrid materials in the automotive industry increase the challenges in adhesive bonding. One of these is the bonding of coated materials such as high-strength steel with an aluminum-silicon (AlSi) coating, which is mostly used in safety-relevant components such as the front or side bumpers. To further improve the mechanical properties, these steel structures can be locally reinforced with a fiber-reinforced compression molding compound (SMC). In this process, the SMC is pressed directly onto the structure, without any pre-treatment of the surface of the steel, whereby the thermosetting resin matrix forms an adhesive bond with the AlSi coating. The choice of a suitable base resin system is of decisive importance for the joint strength of such directly joined hybrid composites and thus also for the overall performance. Therefore three SMC formulations with different base resins were tested for direct adhesion to a metallic surface of a hot-formed steel with an AlSi coating. The aim of this investigation is to identify a correlation between energetic as well as optical surface characteristics and the mechanical strength of such direct hybrid joints. Furthermore, it shall be examined whether a modification of the base resin in the polymer has a significant influence on the bonding strength and the fracture pattern. For this, the project focuses on new methods for the mechanical testing of metal-plastic hybrid composites.

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“…Another technology, which despite having a longer history has received much development and research interest in the recent past for its light weighting potential is adhesive bonding (AB). Recent research in this field has focused on the adhesive properties and applications at high and low temperatures [11], fracture characterization [12], development and validation of numeric simulation tools [13,14], self-healing and thermally expandable particles in adhesive joints [15], application cases [16,17] as well as many other topics. As adhesive bonding, results in continuous bonds, the load distributions are more even and stress concentrations are avoided, improving the performance of the joints.…”

Section: Adhesive Bonding (Ab)mentioning

confidence: 99%

Development of hybrid friction stir welding and adhesive bonding single lap joints in aluminium alloys

Maciel

Infante

Braga³

et al. 2019

Frattura Ed Integrità Strutturale

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Aeronautical structures have been assembled for decades using a wide variety of welding and joining techniques. Over the last 15-20 years significant developments in joining techniques have occurred. Aluminium alloys have been the main traditional materials in civil aeronautical industry for the fuselage and structural parts. In order to reduce weight, improving fuel efficiency, there is the need to develop innovative solutions to join aluminium components in a single lap joint (SLJ) configuration with higher strength to weight ratio than riveting and fastening. In this work, a combination of the friction stir welding (FSW) and adhesive bonding (AB) processes is presented. Quasi-static mechanical properties, fatigue behaviour and other properties of the friction stir weld-bonding joints were assessed and compared with adhesive only and friction stir welded only joints. The development of this new joining technology, combining FSW with AB, resulting in friction stir weld-bonding, aims to incorporate properties and characteristics of both joining technologies, as well as improving damage tolerance. The present research involved the production of two types of overlap joints-FSW and hybrid friction stir weld-bonding. The main objective of this study is to compare the different joining technologies in lap joint configuration and evaluate the influence of different parameters on the mechanical behavior of the joints. The hybrid joints present higher strength, ductility and hardness, with the highest joint efficiency achieved in the hybrid joint produced with 450 kgf. These findings lead to the conclusion that-hybridization process confers a joint efficiency improvement between 20-30 % in most cases.

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Behavior of adhesively bonded coated steel for automotive applications under impact loads

Cited by 18 publications

References 4 publications

Testing mechanical performance of adhesively bonded composite joints in engineering applications: an overview

Testing mechanical performance of adhesively bonded composite joints in engineering applications: an overview

On the strength of joints of metal-plastic composites of hot-formed steel with an AlSi coating and a thermosetting fiber reinforced compression material

Development of hybrid friction stir welding and adhesive bonding single lap joints in aluminium alloys

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