Next Article in Journal
Outdoor Performance Analysis of a Photovoltaic Thermal (PVT) Collector with Jet Impingement and Compound Parabolic Concentrator (CPC)
Previous Article in Journal
Microwave-Assisted Pillaring of a Montmorillonite with Al-Polycations in Concentrated Media
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2017, 10(8), 887; https://doi.org/10.3390/ma10080887

Experimental Investigation on the Joining of Aluminum Alloy Sheets Using Improved Clinching Process

1
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima 770-8506, Japan
3
Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710049, China
4
School of Engineering Technology, Purdue University, West Lafayette, IN 47906, USA
*
Authors to whom correspondence should be addressed.
Received: 26 June 2017 / Revised: 13 July 2017 / Accepted: 21 July 2017 / Published: 1 August 2017
(This article belongs to the Section Manufacturing Processes and Systems)
Full-Text   |   PDF [4667 KB, uploaded 1 August 2017]   |  

Abstract

Aluminum alloy sheets have been widely used to build the thin-walled structures by mechanical clinching technology in recent years. However, there is an exterior protrusion located on the lower sheet and a pit on the upper sheet, which may restrict the application of the clinching technology in visible areas. In the present study, an improved clinched joint used to join aluminum alloy sheets was investigated by experimental method. The improved clinching process used for joining aluminum alloy evolves through four phases: (a) localized deformation; (b) drawing; (c) backward extrusion; and (d) mechanical interlock forming. A flat surface can be produced using the improved clinching process. Shearing strength, tensile strength, material flow, main geometrical parameters, and failure mode of the improved clinched joint were investigated. The sheet material was compressed to flow radially and upward using a punch, which generated a mechanical interlock by producing severe localized plastic deformation. The neck thickness and interlock of the improved clinched joint were increased by increasing the forming force, which also contributed to increase the strength of the clinched joint. The improved clinched joint can get high shearing strength and tensile strength. Three main failure modes were observed in the failure process, which were neck fracture mode, button separation mode, and mixed failure mode. The improved clinched joint has better joining quality to join aluminum alloy sheets on the thin-walled structures. View Full-Text
Keywords: aluminum alloy; improved clinching; material flow; geometrical parameters; failure mode; strength aluminum alloy; improved clinching; material flow; geometrical parameters; failure mode; strength
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Chen, C.; Zhao, S.; Han, X.; Zhao, X.; Ishida, T. Experimental Investigation on the Joining of Aluminum Alloy Sheets Using Improved Clinching Process. Materials 2017, 10, 887.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top