Acoustical and optical determination of mechanical properties of inorganically-bound foundry core materials

  • Inorganically-bound sand cores are used in many light-metal foundries to form cavities in the cast part, which cannot be realised by the mould itself. To enable FEM simulations with core materials, their mechanical properties have to be measured. In this article, we adapt methods to determine the Young’s and shear modulus, the Poisson ratio and the fracture strain of sand cores. This allows us to fully parametrise an ideal brittle FEM model. We found that the Young’s and shear modulus can be obtained acoustically via the impulse excitation technique. The fracture strain was measured with a high-speed camera and a digital image correlation algorithm.

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Author:Philipp LechnerORCiDGND, Georg Fuchs, Christoph Hartmann, Florian Steinlehner, Florian Ettemeyer, Wolfram Volk
Frontdoor URL
Parent Title (English):Materials
Publisher:MDPI AG
Date of first Publication:2020/06/03
Publishing Institution:Universität Augsburg
Release Date:2023/11/15
Tag:General Materials Science
First Page:2531
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Materials Resource Management
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Materials Resource Management / Juniorprofessur für Data-driven Materials Processing
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik
Licence (German):CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand)