MultOpt++: a fast regression-based model for the constraint violation fraction due to composition uncertainties

Journal article


Publication Details

Author(s): Müller A, Sprenger M, Ritter N, Rettig R, Markl M, Körner C, Singer R
Journal: Modelling and Simulation in Materials Science and Engineering
Publisher: IOP PUBLISHING LTD
Publication year: 2019
Volume: 27
Journal issue: 2
ISSN: 0965-0393
Language: English


Abstract

MultOpt++ is a an alloy design tool based on numerical optimization. The concept is similar to approaches in the literature termed 'Alloy by design' and usually dealing with multi-objective optimization problem resulting in a Pareto front with a set of optimal compositions. Unpreventable scattering of element concentrations during the alloy production process causes property deviations of an optimal alloy composition resulting in unfeasible solutions. The violation fractions of such compositions should be taken into account during the optimization process to be able to determine optimal and feasible alloys. Established models for violation fractions require a high computational effort due to a high number of necessary calculations. In this work, we derive a fast model for the constraint violation fraction based on a regression analysis of the mean variation width of alloy properties. We apply this model to nickel-base superalloy properties predicted with the CALPHAD approach. The model allows to select alloys with a lower violation fraction of targeted constraints.


FAU Authors / FAU Editors

Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Markl, Matthias Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Müller, Alexander
Technische Fakultät
Rettig, Ralf
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Ritter, Nils
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Sprenger, Mario
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


How to cite

APA:
Müller, A., Sprenger, M., Ritter, N., Rettig, R., Markl, M., Körner, C., & Singer, R. (2019). MultOpt++: a fast regression-based model for the constraint violation fraction due to composition uncertainties. Modelling and Simulation in Materials Science and Engineering, 27(2). https://dx.doi.org/10.1088/1361-651X/aaf01e

MLA:
Müller, Alexander, et al. "MultOpt++: a fast regression-based model for the constraint violation fraction due to composition uncertainties." Modelling and Simulation in Materials Science and Engineering 27.2 (2019).

BibTeX: 

Last updated on 2019-15-02 at 15:23