Detecting micro-meter-sized internal fatigue cracks in metals via synchrotron radiation X-ray CT

What is it about?

It is crucial to understand the behaviors of micro-meter-sized internal fatigue cracks in metals in order to ensure safety and reliability in the long-term use of structures and equipment. The detection of these tiny cracks using conventional non-destructive approaches has been extremely difficult. To address this issue, we utilized synchrotron radiation multiscale X-ray computed tomography at SPring-8 in Japan, which enabled us to measure the initiation life and propagation rate of these small fatigue cracks inside materials.

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