Main Article Content
The present study focuses on the experimental determination of the mechanical behaviour of simple lap joints subjected to quasi-static tensile loads. Four different specimens were tested, resulting from the combination of two different adhesives (ductile and brittle) and two distinct overlap lengths. Cohesive fractures were observed on all specimens, which allowed for a direct comparison of experimental results and failure load prediction using analytical criteria adequate for adhesive joints. Three different criteria were used to predict the failure load, the Volkersen criterion, generalized yielding of adhesive and the adherend yielding criterion. The predictions based on the Volkersen criterion were found to agree well with experimental values obtained for the more brittle material. Moreover, increasing overlap length for the same material only led to a slight increase of the failure load of the joint. However, for the ductile material it was the generalized yielding criterion that better agreed with experimental results, where a significant and linear increase of the failure load was observed with increased overlap length. These results provide valuable insights for material selection and joint design procedures for adhesive joints loaded under large mechanical demands.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors grant the journal the rights to provide the article in all forms and media so the article can be used on the latest technology even after publication and ensure its long-term preservation.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).