Article (Scientific journals)
Failure mechanism analysis based on laser-based surface treatments for aluminum-polyamide laser joining
Amne Elahi, Mahdi; Koch, Marcus; Bardon, Julien et al.
2021In Journal of Materials Processing Technology, 298
Peer Reviewed verified by ORBi
 

Files


Full Text
untitled.pdf
Publisher postprint (10.27 MB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Keywords :
Laser joining of aluminum-polyamide; Surface pre-treatment; Laser polishing; Failure mechanism
Abstract :
[en] The development of strong metal to polymer assemblies is currently an important research subject thanks to its prominence to develop lightweight structures. Furthermore, laser welding is known to be a fast, reliable, and versatile joining process, and it was demonstrated recently that it can be applied to such metal to polymer systems. To enhance the mechanical properties of the laser-joined aluminum-polyamide (Al-PA) specimens, laser polishing and laser ablation processes have been implemented on the aluminum surface before joining. The polyamide surface was also treated with the laser beam, separately. The surfaces were tested by several characterization techniques before and after each surface treatment. Then aluminum and polyamide samples with different surface treatments have been joined with an identical laser joining process. The mechanical properties of the joints in single lap shear configuration are reported and the failure mechanisms are discussed based on micro-computed x-ray tomography imaging of joined specimens and microscopic analysis before failure. Results show that both surface treatments of aluminum significantly improve the shear load of the joint; however, with different failure mechanisms. Polyamide surface treatment and increasing degree of crystallinity are effective when combined with the laser polishing of the Al surface. This combination is responsible for further enhancement of the shear load of the joint to the limit of base metal strength which is approximately 60 % improvement compared to the untreated samples. Finally, energy dispersive X-ray mapping shows the physicochemical bonding between aluminum oxide and polyamide at the interface.
Disciplines :
Materials science & engineering
Author, co-author :
Amne Elahi, Mahdi ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Koch, Marcus
Bardon, Julien
Addiego, Frederic 
Plapper, Peter ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
External co-authors :
yes
Language :
English
Title :
Failure mechanism analysis based on laser-based surface treatments for aluminum-polyamide laser joining
Publication date :
01 August 2021
Journal title :
Journal of Materials Processing Technology
ISSN :
0924-0136
Publisher :
Elsevier, Lausanne, Netherlands
Volume :
298
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
FnR Project :
FNR11633333 - Process Innovation For Sensors In Mobile Applications Based On Laser Assisted Metal-plastic Joining, 2017 (01/11/2017-31/10/2021) - Mahdi Amne Elahi
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 09 August 2021

Statistics


Number of views
116 (22 by Unilu)
Number of downloads
58 (7 by Unilu)

Scopus citations®
 
15
Scopus citations®
without self-citations
14
OpenCitations
 
8
WoS citations
 
14

Bibliography


Similar publications



Contact ORBilu