PhD Position: Development of Rail Roughness Measuring Technique and Big Data Analysis

The increasing velocity of trains, now reaching up to 250 km/h, creates a significant amount of noise. It is mainly generated by the aerodynamics and the rail-wheel interaction. Due to this interaction, the so-called rolling noise is emitted, contributing significantly to the overall acoustic pollution. The results of sonRAIL study showed direct correlation between the noise development and the surface quality of rail and wheel, thereby creating the willingness to precisely measure this quantity. Unfortunately the existing methods do not allow for a fast and precise evaluation of the rail roughness, making it impossible to keep track of the rail surface status. The high velocity of the train is just one challenge among many that such a measuring device shall overcome. For instance, another major problem would be the data processing. Artificial Intelligence will possibly be used for feature extraction out of the huge amount of data. State of the art dry grinding technology of railways induces increasing noise after the grinding process. The noise only decreases after some train overrun, which smooths the surface of the rails. A closed loop system with integrated Machine Learning for the detection of optimal process parameters for railway grinding needs to be developed, in order to improve the process itself as well as the general track maintenance.

For this industry related research project, we are looking for a new PhD candidate. You will be working on the development of methodology and algorithms to accurately measure surface roughness at high speeds using contactless sensors. Consequently, the developed product will need to be tested and evaluated in the lab, as well as in the real world, on running trains. Theoretical consideration and modeling will then be combined with experimental tasks. In a second step, the candidate will need to establish a method to deal with such an enormous amount of data and make it usable for the clients. This will open doors for diving into Machine Learning and Big Data analysis, also related to the predictive maintenance of the rail network or to the grinding process optimization.

It is expected from the PhD candidate to complete also various duties aside from his research topics, such as supervising students and courses.

We are looking for a highly motivated, self-organized and eager to learn candidates holding a Master’s degree in Engineering or Physics. Qualified candidates should have the following capabilities:

• Good knowledge of data analysis and signal processing
• Interest in metrology and measuring techniques
• Programming experience, preferably in Python and LabView
• Competences in Information Technology
• Languages: fluency in German and English

ETH Zurich is one of the world’s leading universities specialising in science and technology. We are renowned for our excellent education, cutting-edge fundamental research and direct transfer of new knowledge into society. Over 30,000 people from more than 120 countries find our university to be a place that promotes independent thinking and an environment that inspires excellence. Located in the heart of Europe, yet forging connections all over the world, we work together to develop solutions for the global challenges of today and tomorrow.

We look forward to receiving your online application with the following documents:

• Curriculum Vitae
• Motivational Letter
• Trascript of records
• Ev. reference letters

Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.

Further information about D-MAVT and IWF can be found on the following websites:

• D-MAVT: www.mavt.ethz.ch
• IWF: www.iwf.mavt.ethz.ch

For any further questions regarding this position please refer to Davide Frey (frey@iwf.mavt.ethz.ch) or Dr. Michal Kuffa (kuffa@iwf.mavt.ethz.ch).