Rigid and flexible double shear lap adhesive joint at elevated temperature – an experimental study
Authors:
- Klaudia Śliwa-Wieczorek,
- Bogusław Zając
Abstract
Double lap adhesive connections made of Sika® PS and Monolith EP2579-1 were studied experimentally in shear tests. The destructive shear tests were conducted under a quasi-static load at 20 ◦C and 80 ◦C. The aim was to study the impact of elevated temperature on the load capacity of the joint and make a comparative analysis of the results for two types of adhesives: polyurethane Sika® PS (flexible) and epoxy Monolit EP 2579-1 (rigid). The impact of adhesive layer thickness (t = 1, 2 and 4 mm) on the structural response of the joint was tested in two temperature ranges. A distinct impact of the temperature on the joint deformability was noticed. A visual assessment of the joint failure was performed and the initiation and form of failure was described. At 20 ◦C, the ultimate loading for epoxy adhesive joint depending on the joint thickness (t) was greater than for the polyurethane joint by, respectively, 282% for t = 1 mm, 88% for t = 2 mm and 279% for t = 4 mm. It was proved that the temperature increases to 80 ◦C in case of both adhesives reduces the mean destructive force in comparison with the measurements made at 20 ◦C. For the Sika® PS (PUR two-component polyurethane) adhesive, the greatest load capacity decrease was measured for the joint of thickness t = 2 mm (55%), and in case of the epoxy adhesive for the joint of thickness t = 4 mm (89%). It was found that after reaching the destructive force the flexible joints retain a partial load capacity contrary to the rigid joints.
- Record ID
- CUTe4f90d47c5ad488992c02bcc86eaf055
- Publication categories
- ;
- Author
- Journal series
- Polymers, ISSN , e-ISSN 2073-4360, Biweekly
- Issue year
- 2021
- Vol
- 13
- No
- 17
- Pages
- [1-21]
- Article number
- 2873
- Other elements of collation
- fot.; rys.; tab.; wykr.; Bibliografia (na s.) - 19-21; Bibliografia (liczba pozycji) - 56; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 13, Iss. 17, Spec. Iss.
- Substantive notes
- Special Issue: Polymer Composites for Structural Applications
- Keywords in English
- elevated temperature, double shear lap joint, glass transition, epoxy, polyurethanes, rigid and flexible
- DOI
- DOI:10.3390/polym13172873 Opening in a new tab
- URL
- https://www.mdpi.com/2073-4360/13/17/2873/htm Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTe4f90d47c5ad488992c02bcc86eaf055/
- URN
urn:pkr-prod:CUTe4f90d47c5ad488992c02bcc86eaf055
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.