Graduation assignment: Residual stress modeling for high-precision coil winding process
Research & Development
Chemistry & Material science
In a nutshell
Research & Development
No experience (Student)
Mechanical engineering, Chemistry & Material science
This is a graduation assignment for a master's student with a background in engineering mechanics, material science, or a related subject.
To prolong the life of Moore’s law, lithography machines from ASML are getting faster, more precise, and of course more challenging.
Within the new EXE5000 platform, new actuator concepts have been launched to satisfy new performance requirements (e.g. actuation force and force density). As a part of that, a new coil winding technology has also been developed. To make the technology suitable for volume production, a more stable coil winding process is necessary. At this moment, we need to gain more insight into the winding process to reduce the yield loss.
For Lorentz actuators, the deviation of physical dimensions of the coil assembly from designed specs can result in an unwanted disturbance in performance and thus control. Therefore the coil winding process should guarantee the high-precision of the final coil dimensions. To enable this, it is necessary to know more about the coil winding process. Your work is to model the residual stress arising from the coil winding process and experimentally test the model.
Your tasks will include:
1) Studying the literature on coil winding dynamic process modeling, winding stress modeling, and elastoplastic behavior of wound coil;
2) Analyzing the contribution factors of residual stress and building a predictive model for the residual stress either (semi-) analytically or numerically;
3) Designing and conducting experiments to validate the model;
4) Proposing coil winding strategies based on the model to improve the current winding process or hardware;
5) Wrapping up by finishing the thesis writing.
You are a master’s student from a technical university with a background in engineering mechanics, material science or other related subjects. You have good communication, analysis, and self-management skills.
This is a graduation assignment for 5 days a week with a duration of approximately 9 months.
Please keep in mind that we can only consider students (who are enrolled at a school during the whole internship period) for our internships and graduation assignments.
What ASML offers
Your internship will be in one of the leading Dutch corporations, gaining valuable experience in a highly dynamic environment. You will receive a monthly internship allowance of 500 euro (maximum), plus a possible housing or travel allowance. In addition, you’ll get expert, practical guidance and the chance to work in and experience a dynamic, innovative team environment.
ASML: Be part of progress
We make machines that make chips – the hearts of the devices that keep us informed, entertained and safe; that improve our quality of life and help to tackle the world’s toughest problems.
We build some of the most amazing machines that you will ever see, and the software to run them. Never satisfied, we measure our performance in units that begin with pico or nano.
We believe we can always do better. We believe the winning idea can come from anyone. We love what we do – not because it’s easy, but because it’s hard.
Students: Getting ready for real-world R&D
Pushing technology further is teamwork, and our R&D team is more than 5,500 people strong, with major sites on three continents. Dozens of diverse, interdisciplinary teams work in parallel to meet a challenging development schedule.
In such an environment, your colleagues may be sitting next door, or they could be thousands of kilometers away in a different country, or even working for a different company.
An internship at ASML is your opportunity to get to know this world of industrial-strength R&D and get a feel for that excites you most. Will you design a part of the machine, or make sure it gets built to the tightest possible specifications? Will you write software that drives the system to its best performance, or work side-by-side with the engineers of our customers in a fab, optimizing a system to the requirements of the customer?
How will you be part of progress?