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Digital material la...
Digital material laboratory: Wave propagation effects in open-cell aluminium foams
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- Saenger, Erik H. (författare)
- Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH)
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- Uribe, David (författare)
- Ruhr-Universität Bochum
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- Jänicke, Ralf, 1980 (författare)
- Ruhr-Universität Bochum
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- Ruiz, Oscar (författare)
- Universidad EAFIT,EAFIT University
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- Steeb, Holger (författare)
- Ruhr-Universität Bochum
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- Engelska.
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Ingår i: International Journal of Engineering Science. - : Elsevier BV. - 0020-7225. ; 58, s. 115-123
- Relaterad länk:
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http://repository.ea...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This paper is concerned with numerical wave propagation effects in highly porous media using digitized images of aluminium foam. Starting point is a virtual material laboratory approach. The aluminium foam microstructure is imaged by 3D X-ray tomography. Effective velocities for the fluid-saturated media are derived by dynamic wave propagation simulations. We apply a displacement-stress rotated staggered finite-difference grid technique to solve the elastodynamic wave equation. The used setup is similar to laboratory ultrasound measurements and computed results are in agreement with our experimental data. Theoretical investigations allow to quantify the influence of the interaction of foam and fluid during wave propagation. Together with simulations using an artificial dense foam we are able to determine the tortuosity of aluminium foam.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
Nyckelord
- X-ray tomography
- Wave propagation
- Computational material physics
- Aluminium foam
- Finite-difference modeling
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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