Validation of models for Laser Ultrasonic spectra as a function of the grain size in steel
Paper i proceeding, 2018
Mathematical modelling of the ultrasonic wave propagation problem has been used in order to get a deeper understanding of the physics and to identify ultrasonic properties that can be used as an indirect measurement of grain size. The use of both analytical and numerical models enabled extensive parametric studies together with investigation of ultrasonic interactions with well-defined individual microstructures.
The LUS technique has previously been applied to e.g. monitor grain growth during thermomechanical processing of metals. These applications identified and used a correlation with the frequency content of the attenuation. This have been investigated as a possible indirect measurement of grain size, also in this project. The models have been used to verify the correlations and to evaluate different procedures that could be applied as an industrial solution. The suggested procedure is based on deconvolving two successive echoes and has been experimentally validated by two different LUS systems. The reference samples used in the validation were produced by changing the annealing temperature and time to obtain a variation in grain sizes. These grain sizes were then identified by EBSD and the samples were examined in terms of grain size influence on spectral attenuation
Författare
Håkan Wirdelius
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
Mikael Malmström
Swerea
A. Duijster
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO)
A. Volker
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO)
David Krix
Salzgitter Mannesmann Forschung
Martin Stolzenberg
Salzgitter Mannesmann Forschung
A. Martinez-De-Guerenu
Centro de Estudios e Investigaciones Tecnicas
Isabel GUTIERREZ
Centro de Estudios e Investigaciones Tecnicas
D. Jorge-Badiola
Centro de Estudios e Investigaciones Tecnicas
F. D. Van Den Berg
Tata Steel, Nederländerna
Piet Kok
Tata Steel, Nederländerna
12th European Conference on Non-Destructive Testing (ECNDT 2018)
22858
978-91-639-6217-2 (ISBN)
Göteborg, Sweden,
Product Uniformity Control (PUC)
Europeiska kommissionen (EU) (NoRFSR-CT-2013-00031PUC), 2013-07-01 -- 2017-12-31.
Ämneskategorier
Produktionsteknik, arbetsvetenskap och ergonomi
Övrig annan teknik
Annan materialteknik
Drivkrafter
Hållbar utveckling
Styrkeområden
Produktion
Materialvetenskap