Moisture absorption–desorption effects in adhesive joints
By A. Mubashar, Ian Ashcroft, G. Critchlow, A. Crocombe. 2009
200 citations recorded by the source corpus.
Abstract This paper presents a study of moisture absorption–desorption effects in single lap adhesive joints. Experiments were carried out to characterise the moisture uptake of the single part epoxide adhesive, FM73. Tensile testing of single lap joints manufactured from aluminium alloy 2024 T3 and O and FM73 adhesive was carried out after the joints were exposed to different conditioning environments. The experimental results revealed that the failure strength of the single lap joints with 2024 T3 adherends progressively degraded with time when conditioned at 50 °C, immersed in water. However, the joint strength almost completely recovered after moisture was desorbed. The single lap joints with 2024 O adherends showed decreased strength for 28 days of conditioning, after which strength recovered, reaching a plateau after 56 days. Again, strength almost completely recovered on desorption of moisture. The strength recovery of the joints, after desorption of moisture, showed that the degradation of the adhesive was largely reversible. Analysis of the failure surfaces revealed that the dry joints failed cohesively in the adhesive layer and that the failure path moved towards the interface after conditioning. The failure mode then reverted back to cohesive failure after moisture desorption.
Subfields: Building and Construction, Civil and Structural Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/b10031f83f467848447a621ed9bab88a3de3e1f9
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In Building and Construction
In Civil and Structural Engineering
In Mechanics of Materials
Citations in the corpus
- A review on the temperature and moisture degradation of adhesive joints (2017, methodology): “Other types of Fickian-like behavior include the sequential dual Fickian31 and delayed dual Fickian.41 Adhesive may have single Fickian behavior under certain conditions, and anomalous behavior under other set of conditions.38 Usually non-Fickian behavior is promoted by higher temperatures and highe”
- Design and ageing of adhesives for structural adhesive bonding – A review (2015, background): “If the amount of moisture absorbed is less than 1% then physical properties are not significantly influenced.(77,78) Although the failure strength of the single lap joints progressively degraded with time when conditioned at 50 C, immersed in water, the joint strength almost completely recovered aft”