Bachelor thesis or Master thesis
© IKVTopic of the work:
In commercially available rheometers, the pressure loss at a defined flow is determined under the condition that wall adhesion is present. However, the measurement of viscosity and wall slip effects of plastics and rubbers is made more difficult because the pressure is measured at a maximum of three points and interpolation is required between these points. The resulting imprecise estimation makes the efficient design of extrusion tools more difficult. In this work, you can design a rheometer that can measure the pressure at any point on the rheometer and thus make a clear statement about the processing properties of the material. The local pressure distribution in the rheometer becomes visible via a deformable membrane. The challenge here is that the membrane must deform sufficiently to ensure measurability, but on the other hand must not deform plastically or, as the title says, “explode”. Your virtually designed membrane can then be manufactured and tested in practice.
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 existing pressure distribution as well as the metrological recording of the membrane deformation. The application-oriented characterization 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 develop a diaphragm rheometer that achieves sufficient diaphragm deformation under the specified pressure levels to ensure precise measurement, but does not deform plastically.
Your task:
| For a Bachelor's thesis: | For a Master's thesis: |
| Research on rheometer concepts and membrane use | Research on rheometer concepts and membrane use |
| 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
- Organized and independent work
- An engineering degree program would be preferred
If you are interested in writing your thesis at IKV and in this task, please apply.