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Projects: Projects for Investigator
Reference Number EP/G022674/1
Title Friction Joining - Low Energy Manufacturing for Hybrid Structures in Fuel Efficient Transport Applications
Status Completed
Energy Categories Energy Efficiency(Transport) 20%;
Energy Efficiency(Industry) 80%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr H R Shercliff
No email address given
University of Cambridge
Award Type Standard
Funding Source EPSRC
Start Date 01 April 2009
End Date 31 March 2012
Duration 36 months
Total Grant Value £183,316
Industrial Sectors Transport Systems and Vehicles
Region East of England
Programme Materials, Mechanical and Medical Engineering
Investigators Principal Investigator Dr H R Shercliff , Engineering, University of Cambridge (100.000%)
Web Site
Objectives Linked to grant EP/G022402/1
Abstract 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, asthey 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 potentiallyovercome 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 bondstrengths, 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
Publications (none)
Final Report (none)
Added to Database 04/12/08