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Quantile Regression Model for Impact Toughness Estimation

  • Satu Tamminen
  • Ilmari Juutilainen
  • Juha Röning
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6171)

Abstract

The purpose of this study was to develop a product design model for estimating the impact toughness of low-alloy steel plates. The rejection probability in a Charpy-V test (CVT) is predicted with process variables and chemical composition. The proposed method is suitable for the whole production line of a steel plate mill, including all grades of steel in production. The quantile regression model was compared to the joint model of mean and dispersion and the constant variance model. The quantile regression model proved out to be the most effective method for modelling a highly complicated property at this extent.

Next, the developed model will be implemented into a graphical simulation tool that is in daily use in the product planning department and already contains some other mechanical property models. The model will guide designers in predicting the related risk of rejection and in producing desired properties in the product at lower cost.

Keywords

MLP quantile regression Charpy-V test product design 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Satu Tamminen
    • 1
  • Ilmari Juutilainen
    • 1
  • Juha Röning
    • 1
  1. 1.Intelligent Systems GroupUniversity of OuluFinland

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