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Details of Grant 

EPSRC Reference: GR/J00045/01
Title: CORRELATION OF INTERNAL STRESS AND FLUX DISTRIBUTION WITH THE PERFORMANCE OF STRIP WOUND MAGNETIC CORES
Principal Investigator: Moses, Professor AJ
Other Investigators:
Ling, Dr P
Researcher Co-Investigators:
Project Partners:
Telmag Magnetic Components Ltd
Department: Sch of EE & Systems Engineering
Organisation: Cardiff University
Scheme: Standard Research (Pre-FEC)
Starts: 24 February 1994 Ends: 23 August 1996 Value (£): 63,188
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
Energy
Related Grants:
Panel History:  
Summary on Grant Application Form
The proposed investigation will allow us to acquire a full understanding of the predominant factor which influence the magnetic properties of strip wound cores of grain orientated 3 % silicon iron and iron based amorphous magnetic materials. It was concluded from a previous SERC investigation (GR/F/09671) that internal stresses induced by adhesive bonding, cutting and annealing are greatly influenced by processing parameters. This project will quantify the types of stresses induced during bonding, cutting and heat treatment with the aid of static and dynamic domain observations to be carried out using a refined Bitter technique and Kerr magneto optic bench, respectively. A wound core tester will be used to measure total loss and exciting power from a range of toroids. These results will be correlated with the domain observation at various stages of core processing. A PAFEC stress analysis package will be used to calculate theoretical stress distribution due to bonding and the findings will be combined with results obtained using the MAGNET FEM package and experimental analysis of internal flux distribution. A computer prediction program will be written to accurately calculate the effect of processing parameters and core sizes on the magnetic performance of wound cores.
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