Dual-energy X-ray micro-CT imaging of hybrid Ni/Al open-cell foam

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00473594" target="_blank" >RIV/68378297:_____/16:00473594 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21260/16:00235851

Result on the web

<a href="http://iopscience.iop.org/article/10.1088/1748-0221/11/01/C01005/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1748-0221/11/01/C01005/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/11/01/C01005" target="_blank" >10.1088/1748-0221/11/01/C01005</a>

Result language

angličtina

Original language name

Dual-energy X-ray micro-CT imaging of hybrid Ni/Al open-cell foam

Original language description

In this paper, we employ dual-energy X-ray microfocus tomography (DECT) measurement to develop high-resolution finite element (FE) models that can be used for the numerical assessment of the deformation behaviour of hybrid Ni/Al foam subjected to both quasi-static and dynamic compressive loading. Cubic samples of hybrid Ni/Al open-cell foam with an edge length of [15]mm were investigated by the DECT measurement. The material was prepared using AlSi7Mg0.3 aluminium foam with a mean pore size of [0.85]mm, coated with nanocrystalline nickel (crystallite size of approx. [50]nm) to form a surface layer with a theoretical thickness of [0.075]mm. CT imaging was carried out using state-of-the-art DSCT/DECT X-ray scanner developed at Centre of Excellence Telč. The device consists of a modular orthogonal assembly of two tube-detector imaging pairs, with an independent geometry setting and shared rotational stage mounted on a complex 16-axis CNC positioning system to enable unprecedented measurement variability for highly-detailed tomographical measurements. A sample of the metal foam was simultaneously irradiated using an XWT-240-SE reflection type X-ray tube and an XWT-160-TCHR transmission type X-ray tube. An enhanced dual-source sampling strategy was used for data acquisition. X-ray images were taken using XRD1622 large area GOS scintillator flat panel detectors with an active area of [410 410]mm and resolution [2048 2048]pixels. Tomographic scanning was performed in 1,200 projections with a 0.3 degree angular step to improve the accuracy of the generated models due to the very complex microstructure and high attenuation of the investigated material. Reconstructed data was processed using a dual-energy algorithm, and was used for the development of a 3D model and voxel model of the foam. The selected parameters of the models were compared with nominal parameters of the actual foam and showed good correlation.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

—

Project

<a href="/en/project/GA15-15480S" target="_blank" >GA15-15480S: Optimized auxetic structures for cellular metals filled with strain rate sensitive material for high velocity impacts</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

"C01005"

UT code for WoS article

000371469800005

EID of the result in the Scopus database

2-s2.0-84957069880