An Investigation on the Fatigue Behavior of Balanced and Unbalanced Epoxy-Aluminum Single Lap Joints

Paper #:
  • 2015-01-0551

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-0551
Citation:
Chen, Q., Guo, H., Lasecki, J., Hill, J. et al., "An Investigation on the Fatigue Behavior of Balanced and Unbalanced Epoxy-Aluminum Single Lap Joints," SAE Technical Paper 2015-01-0551, 2015, doi:10.4271/2015-01-0551.
Pages:
7
Abstract:
The fatigue strength and failure behavior of A5754-O adhesively bonded single lap joints by a hot-curing epoxy adhesive were investigated in this paper. The single lap joints tested include balanced substrate joints (meaning same thickness) and unbalanced substrate joints, involving combinations of different substrate thicknesses. Cyclic fatigue test results show that the fatigue strength of bonded joints increase with the increasing substrate thickness. SEM and Energy Dispersive X-ray (EDX) were employed to investigate the failure mode of the joints. Two fatigue failure modes, substrate failure and failure within the adhesive were found in the testing. The failure mode of the joint changes from cohesive failure to substrate failure as the axial load is decreased, which reveals a fatigue resistance competition between the adhesive layer and the aluminum substrate.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2013-04-09
Training / Education
2013-04-09
Training / Education
2013-04-09
Training / Education
2013-04-09
Training / Education
2013-04-09
Technical Paper / Journal Article
2011-04-12