About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Optically Pumped Magnetometer Measuring Fatigue-induced Damage in Steel |
Author(s) |
Thomas Straub, Ali Riza Durmaz, Simon Philipp, Andreas Blug, Alexander Bertz |
On-Site Speaker (Planned) |
Thomas Straub |
Abstract Scope |
Uniaxial fatigue testing of micro-mechanical metallic specimens can provide valuable insight into damage formation. Magnetic testing are used for qualitative characterization of damage in ferromagnetic specimens. Sensitive and accurate measurements with magnetic sensors are a key part of such a characterization. This work presents an experimental setup to induce structural defects in a micro-mechanical fatigue test. The resulting magnetic signals are measured during the complete lifetime of the tested specimen. The key component is a highly sensitive optically pumped magnetometer (OPM) used to measure the magnetic hysteresis of a small specimen whose structural defects can be analyzed on a small scale by other metallographic characterization methods as well. This setup aims to quantify the magnetic signatures of damage during the fatigue process, which could enable non-destructive mechanical testing. The initial results obtained from this novel micro-magneto-mechanical test setup for a ferritic steel specimen will be reported in this talk. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, Mechanical Properties |