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Observation of Fretting Fatigue Cracks by Micro Computed Tomography with Synchrotron Radiation
Last modified: 2013-05-03
Abstract
In the present study, micro computed tomography (CT) with synchrotron
radiation (SR) of SPring-8 was applied to observe and evaluate the fretting fatigue
crack propagation in a Ti alloy. The shape of fretting fatigue cracks and crack
coalescence could be evaluated quantitatively. The shape of fatigue cracks
obtained by SR-CT imaging agreed well with the geometry of fracture surface
obtained by the stereogram analysis of scanning electron microscopy. Transition
of crack propagation mode inside specimen in fretting fatigue could be observed
nondestructively.
radiation (SR) of SPring-8 was applied to observe and evaluate the fretting fatigue
crack propagation in a Ti alloy. The shape of fretting fatigue cracks and crack
coalescence could be evaluated quantitatively. The shape of fatigue cracks
obtained by SR-CT imaging agreed well with the geometry of fracture surface
obtained by the stereogram analysis of scanning electron microscopy. Transition
of crack propagation mode inside specimen in fretting fatigue could be observed
nondestructively.
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