Bachelor’s or Master’s Thesis
Topic of the work:
Inaccurate viscosity measurements and operating point-dependent wall slip effects make it difficult to design extrusion tools efficiently and thus indirectly cause additional rejects.
© IKVFunctional principle of the diaphragm rheometer: deformation under the influence of pressure
When measuring viscosity and wall slip effects, the pressure is usually only taken at two or three points and interpolated between these points. Important information is lost between these measuring points. In this thesis you can therefore design and test an innovative rheometer that can measure the pressure at any point of the rheometer and thus provide a clear statement about the properties of the material and the processing behavior. This is to be implemented with the help of a deformable membrane. The challenge here is that the one-sided membrane must deform sufficiently to ensure measurability, but on the other hand it must not deform plastically.
The work is related to this research project:
The research project includes the design of a membrane rheometer, the determination of the effects of a defined pressure curve on the membrane and the conversion of the membrane deformation to the pressure as well as the metrological recording of the membrane deformation. The application-oriented characterisation of wall-sliding plastics and rubbers then makes it possible to improve the flow simulation and design of extrusion tools.
Objective:
The aim of your work is to design and commission a membrane rheometer that achieves sufficient membrane deformation under the specified pressure levels to ensure precise measurement, but does not deform plastically
Task definition:
| For a Bachelor's thesis you will work on the following tasks | For a Master's thesis you will work on the following tasks |
| Construction Design and simulation of the membrane | Construction Design and simulation of the membrane |
| Design of the membrane | design of the membrane |
| Commissioning and testing the membrane | Commissioning and testing the membrane |
| Description of the pressure curve on the diaphragm deformation |
Your profile
- Interest and experience in construction and design
- Enjoy a practical thesis
- Hands-on mentality
- The joy of scientific experimentation
- Natural science degree program
If you are interested in writing your thesis at IKV and in this task, please get in touch with me, either by e-mail, telephone or in person at IKV. We agree on the exact scope of content and schedule individually. I look forward to your message!