Demonstration Of A Chamber For Strain Mapping Of Steel Specimens Under Mechanical Load In A Hydrogen Environment By Synchrotron Radiation
REVIEW OF SCIENTIFIC INSTRUMENTS(2018)
摘要
We demonstrate a hydrogen gas chamber suitable for lattice strain measurements and capturing radiographs of a steel specimen under a mechanical load using high energy synchrotron x-rays. The chamber is suitable for static and cyclic mechanical loading. Experiments were conducted at the 1-ID-E end station of the Advanced Photon Source, Argonne National Laboratory. Diffraction patterns show a high signal-to-noise ratio suitable for lattice strain measurements for the specimen and with minimal scattering and overlap from the gas chamber manufactured from aluminum. In situ radiographs of a specimen in the hydrogen chamber show the ability to track a growing crack and to map the lattice strain around the crack with high spatial and strain resolution.
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关键词
strain mapping,steel specimens,synchrotron radiation,hydrogen environment
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