Fatigue durability assessment of automotive adhesive joints by an in situ corrosion fatigue test

Published on Mar 3, 2016in Journal of Adhesion Science and Technology1.365
· DOI :10.1080/01694243.2016.1156381
Qiuren Chen3
Estimated H-index: 3
(NUAA: Nanjing University of Aeronautics and Astronautics),
Haiding Guo11
Estimated H-index: 11
(NUAA: Nanjing University of Aeronautics and Astronautics)
+ 1 AuthorsXuming Su18
Estimated H-index: 18
(Ford Motor Company)
Sources
Abstract
AbstractFatigue and corrosion damage are the major concerns of automotive adhesive joints, yet literature reports few works about the in situ fatigue durability of adhesive joints in corrosive environment. This study presents an investigation on the fatigue durability of automotive adhesive single lap joints by an in situ corrosion fatigue test. The joints were manufactured with commercial coated AA5754-O aluminum sheets bonded by a toughened epoxy structural adhesive. An in situ corrosion chamber was designed and employed to simulate a humid and corrosive environment by spraying 5% saline solution or distilled water mist around the joints’ overlap area during fatigue testing. The test results show that in the 5% saline solution mist environment, the joints’ fatigue lives encountered a great loss for about an order in magnitude compared to the joints tested in laboratory environment. The difference of fatigue lives between 5% saline solution mist test and distilled water mist test is insignificant. The fr...
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