Influence of Stitching Parameters on the Joint Strength of Welded-Stitched Composites
| Autor: | Dietmar Drummer, Tobias Kleffel, Lisa-Maria Wittmann, Tobias Mattner |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers and Plastics General Chemical Engineering 02 engineering and technology Welding 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering law.invention Moment (mathematics) Image stitching 020303 mechanical engineering & transports 0203 mechanical engineering law Materials Chemistry Composite material 0210 nano-technology Joint (geology) |
| Zdroj: | International Polymer Processing. 33:706-713 |
| ISSN: | 2195-8602 0930-777X |
| DOI: | 10.3139/217.3518 |
| Popis: | Regarding the necessity of lightweight construction, performance and design, composites are well established. At this moment, the joining of these composites still is often a major challenge. While suitable technologies like welding, sticking or riveting do exist, there are several drawbacks of these technologies such as damaging the fiber structure and low bonding strength. The combination of welding and sewing is a novel approach to improve the bonding of glass fibre-reinforced polypropylene and the influence of the processing parameters is not yet well understood. This study aims at analyzing the influence of parameters such as operating temperature, overlap length, needle temperature and thread material on the tensile strength of thermoplastic composites joined in the previously described hybrid approach. Furthermore, the interaction between thread and composite material is investigated by a microscopical analysis. The joint strength has been found to depend on the overlap length of the joint and the results suggest a contribution of the seam to the joint strength, especially for lower overlap lengths. Influences of the processing temperature, the thread material and needle temperature are also present, however, due to the complex interaction, no systematic conclusions could be drawn for these yet. The optical analysis confirms the findings of thermoset composites stitched before impregnation, where additional seams cause dislocations and local agglomeration of fibers. Additional investigations are necessary to determine the effect of the stitching on the joint and to further the understanding of the interaction between composite and thread material. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|