Bachelor thesis or Master thesis
© IKVIn laser transmission welding, parts made of thermoplastics are joined together with a material bond. In addition to parameters such as laser power and irradiation time, the morphology of the parts to be joined has a decisive influence on the quality of the weld seam. Foamed thermoplastics are finding ever wider fields of application due to material and weight savings. However, there is not yet sufficient knowledge about the welding behavior using laser radiation for these components.
The work is related to this research project:
As part of a public research project, the Joining Technology working group is investigating the laser transmission welding of physically or chemically foamed thermoplastic components.
Objective:
The aim is to investigate the behavior of foamed thermoplastics during laser transmission welding. For example, to what extent do different foaming processes, glass fiber contents or post-expansion effects affect the weld seam quality?
Your tasks could be as follows:
| For a Bachelor's thesis, you will work on the following tasks: | For a Master's thesis, you will work on the following tasks: |
| Thematic introduction to the topic of laser welding and foam injection molding | Thematic introduction to the topic of laser welding and foam injection molding |
| Production of test specimens by injection molding | Production of test specimens of two different plastics by injection molding |
| Determination of a suitable process window for laser welding tests of foamed thermoplastics | Determination of a suitable process window for laser welding tests of foamed thermoplastics |
| Examination and evaluation of weld seam quality with the aid of optical and mechanical examinations | Examination and evaluation of weld seam quality with the aid of optical and mechanical examinations |
| Documentation of the results | Documentation of the results |