Arno Duijster
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Arno Duijster has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Arno Volker
TNO, Oude Waalsdorperweg 63, P.O.box 96864, 2509 JG The Hague, The Netherlands
1 shared publication - Carola Celada-Casero
MATERALIA Research Group, National Center for Metallurgical Research (CENIM-CSIC), Madrid, Spain
1 shared publication - Frenk Van Den Berg
Tata Steel, 1970 CA IJmuiden, The Netherlands
1 shared publication
Latest Publications
- Open Access
- 14 January 2023
- Published by MDPI AG in Applied Sciences
- Vol. 13 (2) , 1121
Estimation of Grain Size and Composition in Steel Using Laser UltraSonics Simulations at Different Temperatures
The applicability of laser ultrasonics for the determination of grain size and phase composition in steels under different temperatures was investigated. This was done by obtaining the velocity and attenuation of propagating ultrasonic waves in a simulated steel medium. Samples of ferrite and austenite with varying microstructures were modelled and simulated with the finite difference method, as were samples with varying ratios of austenite and martensite. The temperature of the medium was taken into account as an essential parameter, since both velocity and attenuation are temperature dependent. Results of the velocity and attenuation analysis showed that the use of the wave propagation velocity is not feasible for determination of grain size or phase composition due to a high sensitivity to temperature and sample thickness. The frequency-dependent ultrasonic wave attenuation was less sensitive to the variation of temperature and sample thickness. It can be concluded that accurate knowledge of the temperature is essential for obtaining a correct grain size or phase ratio estimation: a temperature accuracy of 100 °C yields a grain size accuracy in the order of a micrometer using the attenuation. Similarly, a temperature accuracy of 70 °C leads to a phase ratio estimation accuracy of 10%.
- 14 January 2023
- Published by MDPI AG in Applied Sciences
- Vol. 13 (2) , 1121
Open AccessEstimation of Grain Size and Composition in Steel Using Laser UltraSonics Simulations at Different Temperatures
The applicability of laser ultrasonics for the determination of grain size and phase composition in steels under different temperatures was investigated. This was done by obtaining the velocity and attenuation of propagating ultrasonic waves in a simulated steel medium. Samples of ferrite and austenite with varying microstructures were modelled and simulated with the finite difference method, as were samples with varying ratios of austenite and martensite. The temperature of the medium was taken into account as an essential parameter, since both velocity and attenuation are temperature dependent. Results of the velocity and attenuation analysis showed that the use of the wave propagation velocity is not feasible for determination of grain size or phase composition due to a high sensitivity to temperature and sample thickness. The frequency-dependent ultrasonic wave attenuation was less sensitive to the variation of temperature and sample thickness. It can be concluded that accurate knowledge of the temperature is essential for obtaining a correct grain size or phase ratio estimation: a temperature accuracy of 100 °C yields a grain size accuracy in the order of a micrometer using the attenuation. Similarly, a temperature accuracy of 70 °C leads to a phase ratio estimation accuracy of 10%.