Topic of the work:
Local fiber reinforcements in injection-molded components enable a significant increase in rigidity and strength. However, the bond strength between plastic and fiber reinforcements is a critical weak point. The temperature history in the area of the bonding surfaces during production has a significant influence on the bonding strength, as do the residual stresses induced by the process, which can promote premature failure.
© IKVAn innovative measuring technique developed at IKV enables the temperature history to be recorded directly in the connection area using fiber optic measuring equipment. Here, the backscatter pattern of a light pulse in an optical conductor is used for high-precision strain measurement. This technology is already being used in the field of structural health monitoring. This method is now to be applied to the injection molding process in practice in order to analyze both the thermal conditions and the resulting residual stresses in component production. The aim is to use the data obtained to calibrate and validate models for predicting bond strength.
The work is written in this working group:
The Fiber Reinforced Plastics/Dimensioning/CAE Methods working group focuses on the development of new measurement methods, experimental characterization and simulation-based optimization of high-performance components made of fiber-reinforced plastics. The combination of innovative measurement technology and modeling offers an interdisciplinary platform for dealing with current issues.
Objective:
The aim of this work is to experimentally test a novel areal measurement method for recording the temperature history and residual stresses in the bonding area of fiber reinforcements in injection molded components. The data obtained will be used to validate and calibrate models for predicting bond strength.
| For a Bachelor's thesis you will work on the following tasks | For a Master's thesis you will also work on the following tasks |
| Familiarization with the new surface measurement technology and its application in the injection moulding process | further development of the measurement technology for optimized data acquisition in the connection area |
| Conducting experimental studies on temperature history and residual stresses in the bonding area | calibration and validation of models for predicting bond strength based on experimental data |
| Initial analysis of the data obtained and derivation of correlations to the bond strength | simulative analysis of residual stresses and their influence on the failure behavior of components |
Your profile
- Preferably studying something scientific
- You want to expand your knowledge of a wide range of materials, materials testing, measurement technology and process modeling.
- Interest in structural simulation; previous knowledge is an advantage, but not required
- Interest or previous experience in working with fiber-reinforced plastics is an advantage, but not required
This work offers you the opportunity to combine experimental measurement technology with simulation-based approaches and to research innovative methods for improving component safety and efficiency. We look forward to receiving your application!
If you are interested in writing your thesis at IKV and in this or a similar task, please get in touch with me. We agree on the exact scope of content and schedule individually.