Demonstration of a chamber for strain mapping of steel specimens under mechanical load in a hydrogen environment by synchrotron radiation

Journal Article · 04 June 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5012541 · OSTI ID:1472136

Connolly, Matthew ^[1]; Park, Jun -Sang ^[2]; Bradley, Peter ^[1]; Lauria, Damian ^[1]; Slifka, Andrew ^[1]; Drexler, Elizabeth  ^[1]

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1. National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
2. Argonne National Lab. (ANL), Lemont, IL (United States)

Here, 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.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1472136
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 89; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)Copyright Statement
• Country of Publication: United States
• Language: English