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Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation

The mechanical properties of Advanced Pore Morphology (APM) foam elements depend strongly upon their internal porous and external structural geometry. This paper reports on a detailed investigation of external (e.g. shape and size) and internal (e.g. distribution, size, number of pores) geometry and...

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Detalles Bibliográficos
Autores principales: Borovinšek, Matej, Vesenjak, Matej, Higa, Yoshikazu, Shimojima, Ken, Ren, Zoran
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6479400/
https://www.ncbi.nlm.nih.gov/pubmed/30986957
http://dx.doi.org/10.3390/ma12071088
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author Borovinšek, Matej
Vesenjak, Matej
Higa, Yoshikazu
Shimojima, Ken
Ren, Zoran
author_facet Borovinšek, Matej
Vesenjak, Matej
Higa, Yoshikazu
Shimojima, Ken
Ren, Zoran
author_sort Borovinšek, Matej
collection PubMed
description The mechanical properties of Advanced Pore Morphology (APM) foam elements depend strongly upon their internal porous and external structural geometry. This paper reports on a detailed investigation of external (e.g. shape and size) and internal (e.g. distribution, size, number of pores) geometry and porosity changes of APM foam elements, during compressive loading by means of the ex-situ micro-Computed Tomography, and advanced digital image analysis and recognition. The results show that the porosity of APM foam elements decreases by only 25% at the engineering strain of 70% due to an increase of the number of pores at high stages of compressive deformation. The APM foam elements also exhibit a positive macroscopic Poisson’s ratio of υ = 0.2, which is uncharacteristic for cellular structures.
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spelling pubmed-64794002019-04-29 Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation Borovinšek, Matej Vesenjak, Matej Higa, Yoshikazu Shimojima, Ken Ren, Zoran Materials (Basel) Article The mechanical properties of Advanced Pore Morphology (APM) foam elements depend strongly upon their internal porous and external structural geometry. This paper reports on a detailed investigation of external (e.g. shape and size) and internal (e.g. distribution, size, number of pores) geometry and porosity changes of APM foam elements, during compressive loading by means of the ex-situ micro-Computed Tomography, and advanced digital image analysis and recognition. The results show that the porosity of APM foam elements decreases by only 25% at the engineering strain of 70% due to an increase of the number of pores at high stages of compressive deformation. The APM foam elements also exhibit a positive macroscopic Poisson’s ratio of υ = 0.2, which is uncharacteristic for cellular structures. MDPI 2019-04-02 /pmc/articles/PMC6479400/ /pubmed/30986957 http://dx.doi.org/10.3390/ma12071088 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Borovinšek, Matej
Vesenjak, Matej
Higa, Yoshikazu
Shimojima, Ken
Ren, Zoran
Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title_full Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title_fullStr Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title_full_unstemmed Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title_short Characterization of Geometrical Changes of Spherical Advanced Pore Morphology (APM) Foam Elements during Compressive Deformation
title_sort characterization of geometrical changes of spherical advanced pore morphology (apm) foam elements during compressive deformation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6479400/
https://www.ncbi.nlm.nih.gov/pubmed/30986957
http://dx.doi.org/10.3390/ma12071088
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