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Details of Grant 

EPSRC Reference: GR/M35260/01
Title: JREI -A NEW INSTRUMENT FOR THERMOELASTIC STRESS ANALYSIS
Principal Investigator: Barton, Professor J
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Lambda Photometrics Ltd University of Liverpool
Department: Unknown
Organisation: University of Liverpool
Scheme: JREI
Starts: 01 April 1999 Ends: 30 September 1999 Value (£): 58,688
EPSRC Research Topic Classifications:
Instrumentation Eng. & Dev.
EPSRC Industrial Sector Classifications:
Manufacturing
Related Grants:
Panel History:  
Summary on Grant Application Form
A new instrument has recently been developed for thermoelastic stress analysis (TSA) known as the Deltatherm system. TSA is a well established technique for experimental analysis which is extremely versatile as it is non-contact and produces full-field stress images of a loaded component. Previously the only commercially available equipment for TSA was SPATE (Stress Pattern Analysis by the measurement of Thermal Emissions) which incorporated a single-cell IR detector. The equipment operated in a scanning mode and because of the signal processing technique took on average around two hours to produce a stress image. The Deltatherm system incorporates a 128 by 128 detector array and due to fast digital processing can produce an image in as little as 1.2 seconds. The proposed research will concentrate on new applications for TSA, particularly in the area of composite materials. The high resolution of the system and the noncontact nature of the technique make the development of TSA to cover FRP a very attractive proposition. The research will also cover the possibilities of using TSA to measure residual stresses and to further develop existing work on crack-tip stress studies and stress separation. The availability of the Deltatherm equipment at Liverpool will enhance the applicants current research and will be valuable addition to the existing experimental stress analysis equipment already available. The Deltatherm system will prove an invaluable asset when seeking further funding from research councils and industrial sponsors.
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Further Information:  
Organisation Website: http://www.liv.ac.uk