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Mahmoud Mostafavi summary slides 2017


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Personal research summary 2017

Published in: Engineering
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Mahmoud Mostafavi summary slides 2017

  1. 1. Extracting mechanical properties from a small volume of material by combining nano X-ray tompgraphy, digital volume correlation and finite element modleling (a) Scanning electron microscope image of a FIB milled micropillar (b) surface rendering of tomographic data to highlight the indentation as the impressed region. (c) Displacement field measured by digital volume correlation of X-ray computed tomograms. (d) an example of a fitted finite element simulation to the nanoindentation experiment. (a) (b) (c) (d)
  2. 2. Acoustic sensor water bath pathway Bearing housing Y X 6.35 mm Ball Outer raceway (fixed) Brass cage Inner raceway (rotating) Measuring time-resolved dynamic contact strain in a rotating ball bearing using high energy synchrotron energy dispersive X-ray diffraction (a) Bearing loading rig mounted on Diamond Light Source’s I12 stage (b) Fast X-ray radiography (c) X-ray diffraction data from stationary and rotating bearing (a) (b) (c)
  3. 3. detectorsincident beam 3D DIC system (a) (b) (c) Investigating the effects of overload on fatigue crack propagation (a) Fatigue crack propagation at Diamond Light Source’s I12 (b) Elastic strain field map from X-ray diffraction of overloaded compact tension specimen (c) Elastic-plastic strain field of the sample from digital image correlation