Erratum for “Strength of Bolted Lap Joints in Steel Sheets with Small End Distance” by Chu Ding, Shahabeddin Torabian, and Benjamin W. Schafer

An effective way to reduce the weight of vehicle body seems to be application of new materials, and such trend is remarkable. Among the various materials for automobile body, stainless steel sheets and cold rolled steel sheets are under the interests. However, in order to guarantee reliability of new material and to establish the long life fatigue design criteria for body structure, it is necessary to assess spot weldability and fatigue strength of spot welded lap joints fabricated under optimized spot welding condition. In this paper, spot weldability of stainless steel sheets, STS301L and STS304L, and cold rolled steel sheets, SPCC and SPCD. Fatigue strength of lap joints spot welded between similar and dissimilar materials were also assessed.

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Microstructure and Joint Strength of Similar- and Dissimilar Lap Joints Fabricated by Several Advanced Solid-State Welding Methods

Materials Science Forum ◽

10.4028/www.scientific.net/msf.654-656.596 ◽

2010 ◽

Vol 654-656 ◽

pp. 596-601 ◽

Cited By ~ 5

Author(s):

Shinji Kumai ◽

Mitsuhiro Watanabe ◽

Keyan Feng

Keyword(s):

Aluminum Alloy ◽

Solid State ◽

High Speed ◽

Joint Strength ◽

Lap Joints ◽

Back Surface ◽

Magnetic Pulse ◽

Oblique Collision ◽

Friction Stir ◽

Steel Sheets

Both similar- and dissimilar metal joints, which are difficult to be welded by using ordinary fusion welding methods, were successfully obtained by using several advanced high-speed solid-state joining methods. (1) Al/Al, Cu/Cu, Al/Fe(Steel), Al/Cu, Al/Ni, Cu/Ni and Al/Bulk metallic glass lap joints were magnetic pulse welded by means of mutual high-speed oblique collision of metal sheets at a high speed of about 500m/s. (2) 2xxx aluminum alloy pins were stud-welded to 5xxx alloy aluminum sheets and several kinds of plated steel sheets at a high speed by using a specially designed discharge circuit. The welding was achieved within a few milliseconds without producing any weld marks on the back surface of the plate. (3) 6022 aluminum alloy sheets were friction stir spot welded to steel sheets and various kinds of galvanized and aluminum-plated steel sheets. The welding was achieved within a few seconds. For those joints, joint strength and characteristic joint interface morphology were investigated.

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Mechanical Properties of a “Simple Panel Structure” Manufactured of an Ultra High Strength Stainless Steel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.786.319 ◽

2018 ◽

Vol 786 ◽

pp. 319-324 ◽

Cited By ~ 1

Author(s):

Markku Kananen ◽

Antti Järvenpää ◽

Matias Jaskari ◽

Kari Mäntyjärvi

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Bending Strength ◽

High Strength ◽

Experimental Tests ◽

Lap Joints ◽

Low Carbon ◽

Steel Sheets ◽

Low Weight ◽

Bending Resistance

Corrugated core panels contain a formed, corrugated core bonded between two skin sheets. These panels are typically used in applications, where a low weight is required with integrity in stiffness. This paper demonstrates the mechanical properties of a simple panel structure (SPS), constructed using strips of work-hardened, austenitic stainless steel (ASS) grade 1.4310 (type 301) with the yield strength (YS) of ~1200 MPa. The 0.5 mm thick strips were formed into a C-shape and subsequently laser welded together by lap joints to form a SPS. The thickness of the SPS was 50 mm. The bending tests for the SPS were carried out transverse and 45-degrees related to the orientation of the web sheet. The results showed that the SPS, as loaded in the transverse direction, has about the same bending stiffness prior yielding as that of the previously tested 6 mm thick, low carbon S355 plain steel sheets, but the SPS is three times lighter than 6mm thick plain steel sheet. Compared with a corrugated core panel made of an annealed ferritic stainless steel (SS-panel) with the YS ~ 250 MPa, the weight of the both panels are roughly the same, but the bending resistance of the SPS is 45% higher. Experimental tests also verified that the benefit in the stiffness is quickly reduced if the load direction differs from transverse. In the 45-degrees loading direction, the SPS and the SS-panel had almost the same bending strength. On the other hand, the SPS and the SS-panel stiffnesses are much better than that of the carbon steel (the YS ~ 300 MPa) panel (CS-panel) in the both loading directions – the SPS being twice as stiff as the CS-panel.

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Measurement and analysis of welding deformation in arc welded lap joints of thin steel sheets with different material properties

Journal of Manufacturing Processes ◽

10.1016/j.jmapro.2020.11.038 ◽

2021 ◽

Vol 61 ◽

pp. 507-517

Author(s):

Yong Liu ◽

Ninshu Ma ◽

Fenggui Lu ◽

Hongyuan Fang

Keyword(s):

Material Properties ◽

Lap Joints ◽

Welding Deformation ◽

Steel Sheets ◽

Measurement And Analysis ◽

Thin Steel

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Laser weldability of lap joints in zinc coated steel sheets

Welding International ◽

10.1080/09507119809448510 ◽

1998 ◽

Vol 12 (6) ◽

pp. 425-431 ◽

Cited By ~ 1

Author(s):

M Ono ◽

S Kaizu ◽

M Omura ◽

M Kabasawa ◽

K Mori

Keyword(s):

Lap Joints ◽

Coated Steel ◽

Steel Sheets ◽

Zinc Coated Steel

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Laser Direct Energy Deposition Welding of AISI 316 Stainless Steel Sheets

Volume 2: Processes; Materials ◽

10.1115/msec2019-2779 ◽

2019 ◽

Author(s):

Alessandro Ascari ◽

Alessandro Fortunato ◽

Erica Liverani ◽

Adrian H. A. Lutey

Keyword(s):

Stainless Steel ◽

Energy Deposition ◽

Rapid Development ◽

Lap Joints ◽

Weld Bead ◽

Main Process ◽

Direct Energy Deposition ◽

Steel Sheets ◽

Wide Range ◽

Direct Energy

Abstract The present paper assesses the applicability of laser powder direct energy deposition for welding of thin stainless steel sheets. Considering the rapid development of laser cladding and relatively wide range of equipment available in modern industrial settings, this technology can also be applied to laser welding, where the procedure is performed with a filler material comprising blown powder. To this end, an exhaustive experimental campaign has been carried out with the aim of evaluating the influence of the main process parameters, including laser power and powder feed rate, on the resulting weld bead characteristics. Two joint configurations have also been considered to assess the best solution in terms of both chamfer shape and sheet positioning. Butt and lap joints were prepared, with 30° and 45° V-groove configurations tested and characterized in the former case. In order to assess the resulting weld quality, metallographic analyses were carried out to measure the main morphological parameters of the weld beads, including width, penetration depth and reinforcement, and to evaluate the possible presence of defects such as pores, cracks or lack of melting. Tensile tests were also carried out with the purpose of characterizing the overall mechanical performance of the joints. These tests demonstrated good overall process feasibility and highlighted the fact that lap joints and 30° V-groove butt joints were the best configurations in terms of both weld bead quality and fused zone morphology.

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