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Details of Grant 

EPSRC Reference: GR/M54445/01
Title: OPTIMISATION OF LASER DRILLING PROCESSES IN THE AEROSPACE INDUSTRY BY THE DEVELOPMENT OF A HEAT FLOW MODEL
Principal Investigator: Clyne, Professor TW
Other Investigators:
Researcher Co-Investigators:
Project Partners:
BAE Systems Ministry of Defence (MOD) Rolls-Royce Plc (UK)
Department: Materials Science & Metallurgy
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 19 June 1999 Ends: 18 December 2002 Value (£): 196,821
EPSRC Research Topic Classifications:
Materials Processing
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Transport Systems and Vehicles
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
A three-dimensional finite difference model simulating the heat flow which occurs during laser drilling has been developed in-house at Cambridge over the last two years; within a LINK programme concerned with enhancing the formability of advanced thermoplastic composites by systematic cutting of the fibres. In the proposed programme, this model will be converted to a robust and user-friendly form suitable for use in industry. It will also be extended to incorporate the effects of melt ejection, chemical reaction and the generation of residual stresses. This work will be oriented towards three laser drilling processes, each of prime interest to one of the industrial partners. The substrates to be drilled are (i) thermal barrier coated superalloys, (ii) Al, Ti and composite (APC-2) laminates (for airframe structures), (iii) APC-2 pre-peg material and (iv) glass fibre composites. The conditions to be studied will include relative motion during drilling, non-normal beam incidence and multi-layered /anisotropic materials. A comprehensive validation exercise will be carried out, with experimental work being done at Cambridge and by the industrial partners. The total value of the required resources is about 335k, of which almost half will be provided by the industrial partners.
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Organisation Website: http://www.cam.ac.uk