Abstract
We demonstrate the in situ measurement of zero-group-velocity Lamb waves and thickness-resonances in steel sheet samples using laser-based ultrasound, while changing the sample temperature from ambient to 1000∘ C. The ratio of resonance frequencies yields the temperature dependent Poisson’s ratio of its material without requiring knowledge on the sheets’ thickness. Changes in the temperature derivative of the determined Poisson’s ratio reflect changes in the microstructural constituents. We show that additional resonances present in the response spectrum can be used to cross-check the evaluation. With additional knowledge on the thickness, longitudinal and transverse sound velocities are determined as well. We find good qualitative agreement between the temperature dependence of the measured quantities and reference data obtained from dilatometry and thermodynamic material simulations …
| Original language | English |
|---|---|
| Article number | 118097 |
| Pages (from-to) | 118097 |
| Number of pages | 15 |
| Journal | Acta Materialia |
| Issue number | Band 235 |
| DOIs | |
| Publication status | Published - 2022 |
Fields of science
- 203 Mechanical Engineering
- 203007 Strength of materials
- 203024 Thermodynamics
- 203034 Continuum mechanics
- 211103 Physical metallurgy
- 211105 Nonferrous metallurgy
- 101014 Numerical mathematics
- 101028 Mathematical modelling
- 102001 Artificial intelligence
- 102022 Software development
- 103006 Chemical physics
- 103018 Materials physics
- 103042 Electron microscopy
- 105113 Crystallography
- 203002 Endurance strength
- 203013 Mechanical engineering
- 203037 Computational engineering
- 205019 Material sciences
- 211101 Iron and steel metallurgy
- 103009 Solid state physics
- 103043 Computational physics
JKU Focus areas
- Digital Transformation
- Sustainable Development: Responsible Technologies and Management