Laser drilling is extensively used in high-value manufacturing for the last thirty years to make holes of various size (0.5mm-2mm) and shape. Recently, there has been an increased interest on high-aspect-ratio (10-20) micro-hole drilling (diameter 30-50 µm) process in applications like zero-emission transportation, low-carbon energy and clean aerospace. The current expertise and knowledge on laser drilling is predominantly based on macro-hole drilling and very little information available in the public domain on micro-hole drilling process. The initial work at the MTC on this topic proved that several technical aspects need to be understood to accomplish the high-speed laser micro-drilling process. This PhD will focus on generating fundamental and applied knowledge, and expertise on micro-hole drilling process (diameter 30-50 µm with aspect-ratio of 10-20). The research will focus on both nozzle based and galvo-based beam delivery, with various laser source (from single-mode continuous wave laser to picosecond laser). The PhD project will also include some elements of process monitoring and modelling/simulation.
The project will build on the results of recently completed H2020 and industry funded programmes at MTC and the UoB. In addition, the PhD project is expected to involve and be relevant to some MTC member companies, e.g. Rolls-Royse, IPG, DMG-MORI, BAE Systems and Synova. In addition, the PhD project will benefit from the capital investment at the UoB in a multi-axis laser micro processing system as part of the ESIF SmartFub project.
It is expected that the PhD student will spend some time at the MTC in order to ensure engagement and drive value for the MTC and the University of Birmingham. The research will be carried out on state-of-the-art laser processing systems both at the MTC and also at the UoB. The PhD project will be focused on addressing the specific requirements of the MTC industry members that will be agreed with them in the 1st year of this PhD project.
The successful applicant will have studied Mechanical, Materials or Manufacturing Engineering, Applied Physics or a closely related discipline. A good knowledge or demonstrated awareness of fundamental aspects of laser-material processing and applied knowledge in laser processing is desirable. Experience in using a range of technologies/techniques for surface characterisation would be an advantage.
UoB supervisor: Prof. Stefan Dimov
MTC supervisors: Dr Sundar Marimuthu
For further information and enquiries please contact Prof. Stefan Dimov, [Email Address Removed].
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