@PhdThesis{duepublico_mods_00082196,
  author = 	{Holst Dipl. Chem., Susann},
  title = 	{Entwicklung eines Analyseverfahrens zur Charakterisierung hei{\ss}er Stahlproben auf Basis der Funkenspektrometrie},
  year = 	{2024},
  month = 	{Jul},
  day = 	{31},
  keywords = 	{Funkenspektrometrie; optische Emission; Verwechslungspr{\"u}fung Stahl},
  abstract = 	{This work focuses on the development of an application for the mix-up detection of hot non-prepared steel samples. Based on earlier work on the quantitative analysis of different materials at high temperatures, spark excited optical emission spectrometry was selected for the experiments. Optical emission spectrometry provides an almost non-destructive analysis of samples under consideration of all elements. At the beginning of the investigations, the influence of sample temperature and composition on the course of the raw intensities was analysed. For this purpose, different steel samples were investigated in the temperature range from 20 {\textdegree}C to 500 {\textdegree}C. The development of the application logic for mix-up detection focusses on raw intensities to keep the temperature influence as low as possible. All intensities of samples investigated decrease with increasing sample temperature. However, pure metal samples behave contrarily. Their intensity increases with raising temperatures. The number and quantity of alloying elements have a strong influence on the course of the intensities. The proposed mix-up check includes a data base comparison of an error quotient to identify the steel grade at different temperatures. The introduced error quotient incorporates the measured intensity as well as the standard deviation of the respective element.},
  doi = 	{10.17185/duepublico/82196},
  url = 	{https://duepublico2.uni-due.de/receive/duepublico_mods_00082196},
  url = 	{https://doi.org/10.17185/duepublico/82196},
  file = 	{:https://duepublico2.uni-due.de/servlets/MCRFileNodeServlet/duepublico_derivate_00081704/Diss_Holst.pdf:PDF},
  language = 	{de}
}