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Crack-tip stress field and fatigue crack growth monitoring using infrared lock-in thermography in A359/SiCp composites

This work was a result of an international collaboration between Sheffield Hallam University and University of Ioannina. The work reported is the original concept of applying non-destructive evaluation techniques for determining/assessing fatigue crack growth in particulate reinforced composites. Since the addition of ceramic particulate in metal matrix gives rise to internal strain, the heat generated during deformation was monitored non-destructively to monitor structure/ components for their structural integrity. With some refinements, this approach has potential applications in the real-time monitoring of fatigue in aircraft wings and turbine engines.