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Details of Grant 

EPSRC Reference: EP/G022402/1
Title: Friction Joining - Low Energy Manufacturing for Hybrid Structures in Fuel Efficient Transport Applications
Principal Investigator: Prangnell, Professor P
Other Investigators:
Robson, Professor J
Researcher Co-Investigators:
Project Partners:
Airbus Operations Limited Jaguar Land Rover Limited Meridian Lightweight Technologies UK Ltd
Novelis Sonobond Tata Steel Limited
Department: Materials
Organisation: University of Manchester, The
Scheme: Standard Research
Starts: 01 July 2009 Ends: 30 September 2012 Value (£): 406,441
EPSRC Research Topic Classifications:
Materials Processing Materials testing & eng.
EPSRC Industrial Sector Classifications:
Transport Systems and Vehicles
Related Grants:
Panel History:
Panel DatePanel NameOutcome
07 Oct 2008 Materials Prioritisation Panel OCT Announced
Summary on Grant Application Form
There are clear drivers in the transport industry towards lower fuel consumption and CO2 emissions through the introduction of designs involving combinations of different material classes, such as steel, titanium, magnesium and aluminium alloys, metal sheet and castings, and laminates in more efficient hybrid structures. The future direction of the transport industry will thus undoubtedly be based on multi-material solutions. This shift in design philosophy is already past the embryonic stage, with the introduction of aluminium front end steel body shells (BMW 5 series) and the integration of aluminium sheet and magnesium high pressure die castings in aluminium car bodies (e.g. Jaguar XK).Such material combinations are currently joined by fasteners, which are expensive and inefficient, as they are very difficult to weld by conventional technologies like electrical resistance spot, MIG arc, and laser welding. New advanced solid state friction based welding techniques can potentially overcome many of the issues associated with joining dissimilar material combinations, as they lower the overall heat input and do not melt the materials. This greatly reduces the tendency for poor bond strengths, due to interfacial reaction and solidification cracking, as well as damage to thermally sensitive materials like laminates and aluminium alloys used in automotive bodies, which are designed to harden during paint baking. Friction joining techniques are also far more efficient, resulting in energy savings of > 90% relative to resistance spot and laser welding, are more robust processes, and can be readily used in combination with adhesive bonding.This project, in close collaboration with industry (e.g. Jaguar - Land Rover, Airbus, Corus, Meridian, Novelis, TWI, Sonobond) will investigate materials and process issues associated with optimising friction joining of hybrid, more mass efficient structures, focusing on; Friction Stir, Friction Stir Spot, and High Power Ultrasonic Spot welding. The work will be underpinned by novel approaches to developing models of these exciting new processes and detailed analysis and modelling of key material interactions, such as interfacial bonding / reaction and weld microstructure formation.
Key Findings
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Potential use in non-academic contexts
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Date Materialised
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Organisation Website: http://www.man.ac.uk