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 Yo...

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Bibliographic Details
Published inMaterials Vol. 13; no. 11; p. 2531
Main Authors Lechner, Philipp, Fuchs, Georg, Hartmann, Christoph, Steinlehner, Florian, Ettemeyer, Florian, Volk, Wolfram
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 03.06.2020
MDPI
Subjects
3-point-bending
Acoustic properties
Algorithms
Computer simulation
Digital imaging
elastic properties
Foundries
fracture strain
fracture strength
High speed cameras
inorganic sand core materials
Mechanical properties
Modulus of elasticity
Optical properties
Poisson's ratio
Porous materials
Sand
Shear modulus
Simulation
Software
Strain gauges
water-glass
Germany
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Summary: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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ISSN:1996-1944
1996-1944
DOI:10.3390/ma13112531