Metrology of Sheet Metal Distortion and Effects of Spot-Welding Sequences on Sheet Metal Distortion-Reference-Cited by-同舟云学术

Metrology of Sheet Metal Distortion and Effects of Spot-Welding Sequences on Sheet Metal Distortion

Published:2023-06-04 Issue:3 Volume:7 Page:109
ISSN:2504-4494
Container-title:Journal of Manufacturing and Materials Processing
language:en
Short-container-title:JMMP

Author:

Boldsaikhan Enkhsaikhan¹^ORCID,Milhon Michael¹,Fukada Shintaro²,Fujimoto Mitsuo²,Kamimuki Kenichi³

Affiliation:

1. Industrial, Systems & Manufacturing Engineering Department, Wichita State University, Wichita, KS 67260, USA

2. Corporate Technology Division, Kawasaki Heavy Industries, Ltd., Akashi 673-8666, Japan

3. Aerospace Division, Kawasaki Heavy Industries, Ltd., Kakamigahara 504-8710, Japan

Abstract

Refill friction stir spot welding (RFSSW) is an emerging solid-state welding technology that demonstrates an outstanding ability to join aerospace aluminum alloys. The thermomechanical processing of RFSSW may cause variations in the workpiece in the form of distortion. This study aims to establish a metrology method for sheet metal distortion with the intent to investigate the effects of RFSSW sequences on sheet metal distortion. The approach employs a robotic metrology system and the least squares method to measure and estimate the flatness of sheet metal before RFSSW and after RFSSW. The RFSSW experimentation produces five 10-spot-weld panels with five different RFSSW sequences, whereas the RFSSW sequences are based on the common practice of making sheet metal assemblies. A panel consists of two lap-welded sheets where the top sheet, a 6013-T6 aluminum alloy, is refill friction stir spot welded onto the bottom sheet, a 2029-T8 aluminum alloy. The results suggest that RFSSW sequences do have effects on sheet metal distortion. The panel with the worst distortion has a root-mean-square error of 0.8 mm as an average deviation from the ideal flatness.

Funder

Kawasaki Heavy Industries, Inc.

The Boeing Company through the Center for Friction Stir Processing

Publisher

MDPI AG

Subject

Industrial and Manufacturing Engineering,Mechanical Engineering,Mechanics of Materials

Link

https://www.mdpi.com/2504-4494/7/3/109/pdf

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