Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 22, 2018 - December 24, 2018
Most of the vehicle components have a variety of materials, such as fine- and/or coarse-grained polycrystalline alloys, and resins. Since they and their jointed components are often surrendered under severe fatigue conditions, we would like to evaluate their integrity, hopefully non-destructively. From such points of view we have developed and introduced some techniques on three-dimensional non-destructive mechanical analysis methods with at SPring-8:BL33XU (Toyota beamline). The first one is a conventional diffraction for depth resolved stress and strain measurement but with area detector and our-developed rotating spiral slit. This technique enables us to measure space-resolved strain distribution of arbitrary materials. The next one is a scanning three-dimensional x-ray diffraction (scanning 3DXRD) microscopy with a high-energy x-ray microbeam. By this technique we can measure inter- and intra-granular distribution of crystal orientation. We also tried the corresponding crystal plasticity finite element (CPFE) analysis to understand the plastic behaviour for polycrystalline iron and interaction between the grains. The third one is a synchrotron laminography for three-dimensional material analysis. The digital volume correlation is also applied to visualise not only the internal morphology but also its strain distribution non-destructively. These three individual or integrated methods are helpful for developing and analysing electric-powered mobilities’.
