Abstract
Ultrasonic spot welding is a joining technique for thermoplastic composites with great potential regarding processing speed and cost. To investigate the damage tolerance and possible inherent damage arresting behavior of multi-spot welded joints, a technique is necessary to measure damage growth in the joints under cyclic loading. Visual inspection is not possible because the damage is not located on the outside surface and conventional techniques such as C-scan are not practical during a fatigue test because the specimen would have to be removed from the setup. This paper details a methodology for quantifying damage growth rates in singlespot welded joints using surface strain measurements made by Digital Image Correlation. This represents the first step towards developing a methodology for quantifying damage progression behavior in complex multi-spot welded joints.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability |
| Subtitle of host publication | Vol 3 – Characterization |
| Editors | Anastasios P. Vassilopoulos , Véronique Michaud |
| Place of Publication | Lausanne |
| Publisher | EPFL Lausanne, Composite Construction Laboratory |
| Pages | 439-447 |
| Number of pages | 9 |
| ISBN (Electronic) | 978-2-9701614-0-0 |
| Publication status | Published - 2022 |
| Event | 20th European Conference on Composite Materials: Composites Meet Sustainability - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022 Conference number: 20 |
Conference
| Conference | 20th European Conference on Composite Materials |
|---|---|
| Abbreviated title | ECCM20 |
| Country/Territory | Switzerland |
| City | Lausanne |
| Period | 26/06/22 → 30/06/22 |
Keywords
- Ultrasonic spot welding
- thermoplastic composites
- Digital image correlation
- Fatigue
- damage growth