Design of an in situ mechanical test for spot-welded joints

Payen, Gilles-Rémi; Klöcker, Helmut; Lens, Arnaud; Wilkinson, David S.; Embury, J.D.

doi:10.1016/j.engfracmech.2012.09.002

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…The present test was particularly designed for crack propagation in sheet metal as suggested by David Embury [25], and from previous technical savoir faire as well as trial and error. A 60 degrees-wedge is driven in between the two welded sheets into the existing seam, while the opposite side forms a hinge-type stop which blocks only the translation movement of the sample while not impeding the splitting of the sample.…”

Section: The Test Jigmentioning

confidence: 99%

Original test device for crack propagation in the weld nugget of advanced high strength steels

Lacroix

Kermouche

Lens

et al. 2015

Engineering Fracture Mechanics

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International audienceAdvanced High-Strength Steels are ever increasingly used in industry, and unlike mild steels the crack propagates through the weld nugget. At the present time, any method to measure the strength of the fusion zone is unavailable. Therefore a new test setup enforcing crack propagation through the weld nugget was developed. In the wedge test proposed, this device provides stable crack growth as the wedge is displaced. Thus, along with in situ observations, this device, without any prior assumptions is able to measure energy dissipation rate as well as crack opening angle. This is very significant because from these two data, a mechanical modeled was established to predict the cohesive energy and strength in the weld nuggets of AHSS. This method: the experimental setup and mechanical model were then applied to commercial alloys and synthetic grades successfully. This indicates that this methodology can be applied to any type of alloy. (C) 2015 Elsevier Ltd. All rights reserved

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Section: The Test Jigmentioning

confidence: 99%

Original test device for crack propagation in the weld nugget of advanced high strength steels

Lacroix

Kermouche

Lens

et al. 2015

Engineering Fracture Mechanics

View full text Add to dashboard Cite

show abstract

“…At first, the establishment of a detailed list of requirements was assembled, considering the characteristics of existing equipment [6][7][8]. Examples of such requirements include (but are not limited to) 230 V for mains operation, IP 33 protection, simple design, mobility and environmental considerations.…”

Section: Design and Manufacturementioning

confidence: 99%

Manufacture of a Home-Made Spot Welding Machine from Household Electronic Waste

Bı́ró

Renkó

2021

Acta Materialia Transylvanica

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Nowadays, spot-welding technologies are being used on a very wide range of applications. Spot-welded joints can be found in many pieces of equipment, such as toasters, computers, telephone batteries, or even in various pre-manufactured car elements. Given the prevalence of the technology, there may be a legitimate need for a machine that can be used at home for simple spot-welding operations. Such a device could be produced more cost-effectively than those currently available on the market, while using household electronic waste. These could be produced for hobby purposes, thus creating an opportunity to recycle certain types of household electronic waste, thereby improving sustainability in an engineering approach.

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Optimizing Advanced High‐Strength Steel Joints via Regional Rapid Cooling in Resistance Spot Welding

Hıdıroglu,

Aydın,

Kahraman

2024

steel research int.

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During resistance spot welding (RSW), the thermal cycles that occur cause microstructural differentiations in the heat‐affected zones of martensitic steels, leading to internal stresses. In this context, a new and innovative methodology has been developed to minimize the adverse effects of heterogeneous hardness changes in the welding area on joint durability. This methodology utilizes a unique prototype setup based on the regional rapid cooling (RRC) process, which is integrated into the welding machine and operates in synchronization with the machine during the process. Through this setup, the aim is to effectively control the microstructure and hardness values in the welding area. This innovative approach presents potential improvements in the field of welding technology by aiming to optimize material performance during the welding process. According to microstructure results, the RRC process has narrowed the heat‐affected zone to 1.27 mm, increased the hardness values by 9.2%, showed a 3% increase in tensile‐shear strength, a 9% increase in cross‐tension strength, and based on fatigue strength results, no fractures occurred in all specimens subjected to a force of 0.3 kN.

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Design of an in situ mechanical test for spot-welded joints

Cited by 10 publications

References 11 publications

Original test device for crack propagation in the weld nugget of advanced high strength steels

Original test device for crack propagation in the weld nugget of advanced high strength steels

Manufacture of a Home-Made Spot Welding Machine from Household Electronic Waste

Optimizing Advanced High‐Strength Steel Joints via Regional Rapid Cooling in Resistance Spot Welding

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