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Experimental Mechanics @
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Recent
Research: Digital Photoelasticity |
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The
pictures show quantitative isochromatic fringe order data which is directly
proportion to the difference in principal strains for a slice from a stress-frozen
model of a jet-engine turbine disc (left), from a turbine blade with a
photoelastic coating being excited at several kilohertz (centre) and from the
bulkhead of a military aircraft subject to full-scale fatigue test (right)
with a photoelastic coating. All of
the images were obtained using in-house software combined with readily
available image acquisition equipment and conventional polariscopes. For an overview of the technology see: PATTERSON,
E. A., 2002, ‘Digital photoelasticity: principles, practice and potential’,
Strain, 38: 27-39. |
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