Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends
Samo za registrovane korisnike
2019
Autori
Tomić, NatašaMilanović, Predrag
Međo, Bojan
Vuksanović, Marija M.
Veljović, Đorđe
Rakin, Marko
Jančić-Heinemann, Radmila
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Poly(ethylene-co-vinyl acetate) (EVA) and poly(methyl methacrylate) (PMMA) are two incompatible polymers. Compatibilization of EVA/PMMA polymer blends with EVA-g-PMMA decreased the pore diameter and improved the mechanical properties. Image analysis of SEM micrographs enabled statistical analysis of the porosity parameters, including data about their positions. Positioning of the pores on the image was achieved by implementation of Voronoi diagrams and Delaunay triangulation by Python libraries. Hausdorff dimension (DHf) analysis showed improved complexity of the material network obtained by compatibilization. The coordinates of pore contours were processed by the Ramer-Douglas-Peucker algorithm (RDP) to establish the models by the finite element method (FEM). This process is iterative and enables a parametric study of the problem so that the type of pore geometry responsible for the observed mechanical behavior could be revealed. The FEM revealed the regions of the material that bear ...the load and enabled the extraction of parts of the material that diminish the porosity but do not participate in load carrying. A parametric study showed a decrease of 22% in the maximal shear stress when the porosity increased 10%, suggesting the importance of bulging of the material that played the role in decreasing the porosity of non-bearing material. A procedure for selecting the model with a regular pore shape and distribution based on the actual (irregular) porous microstructure is proposed.
Ključne reči:
Porous materials / Voronoi diagram / Delaunay triangulation / Hausdorff dimension / FEM / Parametric studyIzvor:
Mechanics of Materials, 2019, 129, 1-14Izdavač:
- Elsevier Science Bv, Amsterdam
Finansiranje / projekti:
- Razvoj opreme i procesa dobijanja polimernih kompozitnih materijala sa unapred definisanim funkcionalnim svojstvima (RS-34011)
- Mikromehanički kriterijumi oštećenja i loma (RS-174004)
- Sinteza, razvoj tehnologija dobijanja i primena nanostrukturnih multifunkcionalnih materijala definisanih svojstava (RS-45019)
Napomena:
- Peer reviewed manuscript: http://technorep.tmf.bg.ac.rs/handle/123456789/5043
Povezane informacije:
- Verzija dokumenta
http://technorep.tmf.bg.ac.rs/handle/123456789/5043
DOI: 10.1016/j.mechmat.2018.10.008
ISSN: 0167-6636
WoS: 000460191600002
Scopus: 2-s2.0-85055667408
Kolekcije
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Tomić, Nataša AU - Milanović, Predrag AU - Međo, Bojan AU - Vuksanović, Marija M. AU - Veljović, Đorđe AU - Rakin, Marko AU - Jančić-Heinemann, Radmila PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4155 AB - Poly(ethylene-co-vinyl acetate) (EVA) and poly(methyl methacrylate) (PMMA) are two incompatible polymers. Compatibilization of EVA/PMMA polymer blends with EVA-g-PMMA decreased the pore diameter and improved the mechanical properties. Image analysis of SEM micrographs enabled statistical analysis of the porosity parameters, including data about their positions. Positioning of the pores on the image was achieved by implementation of Voronoi diagrams and Delaunay triangulation by Python libraries. Hausdorff dimension (DHf) analysis showed improved complexity of the material network obtained by compatibilization. The coordinates of pore contours were processed by the Ramer-Douglas-Peucker algorithm (RDP) to establish the models by the finite element method (FEM). This process is iterative and enables a parametric study of the problem so that the type of pore geometry responsible for the observed mechanical behavior could be revealed. The FEM revealed the regions of the material that bear the load and enabled the extraction of parts of the material that diminish the porosity but do not participate in load carrying. A parametric study showed a decrease of 22% in the maximal shear stress when the porosity increased 10%, suggesting the importance of bulging of the material that played the role in decreasing the porosity of non-bearing material. A procedure for selecting the model with a regular pore shape and distribution based on the actual (irregular) porous microstructure is proposed. PB - Elsevier Science Bv, Amsterdam T2 - Mechanics of Materials T1 - Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends EP - 14 SP - 1 VL - 129 DO - 10.1016/j.mechmat.2018.10.008 ER -
@article{ author = "Tomić, Nataša and Milanović, Predrag and Međo, Bojan and Vuksanović, Marija M. and Veljović, Đorđe and Rakin, Marko and Jančić-Heinemann, Radmila", year = "2019", abstract = "Poly(ethylene-co-vinyl acetate) (EVA) and poly(methyl methacrylate) (PMMA) are two incompatible polymers. Compatibilization of EVA/PMMA polymer blends with EVA-g-PMMA decreased the pore diameter and improved the mechanical properties. Image analysis of SEM micrographs enabled statistical analysis of the porosity parameters, including data about their positions. Positioning of the pores on the image was achieved by implementation of Voronoi diagrams and Delaunay triangulation by Python libraries. Hausdorff dimension (DHf) analysis showed improved complexity of the material network obtained by compatibilization. The coordinates of pore contours were processed by the Ramer-Douglas-Peucker algorithm (RDP) to establish the models by the finite element method (FEM). This process is iterative and enables a parametric study of the problem so that the type of pore geometry responsible for the observed mechanical behavior could be revealed. The FEM revealed the regions of the material that bear the load and enabled the extraction of parts of the material that diminish the porosity but do not participate in load carrying. A parametric study showed a decrease of 22% in the maximal shear stress when the porosity increased 10%, suggesting the importance of bulging of the material that played the role in decreasing the porosity of non-bearing material. A procedure for selecting the model with a regular pore shape and distribution based on the actual (irregular) porous microstructure is proposed.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Mechanics of Materials", title = "Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends", pages = "14-1", volume = "129", doi = "10.1016/j.mechmat.2018.10.008" }
Tomić, N., Milanović, P., Međo, B., Vuksanović, M. M., Veljović, Đ., Rakin, M.,& Jančić-Heinemann, R.. (2019). Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends. in Mechanics of Materials Elsevier Science Bv, Amsterdam., 129, 1-14. https://doi.org/10.1016/j.mechmat.2018.10.008
Tomić N, Milanović P, Međo B, Vuksanović MM, Veljović Đ, Rakin M, Jančić-Heinemann R. Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends. in Mechanics of Materials. 2019;129:1-14. doi:10.1016/j.mechmat.2018.10.008 .
Tomić, Nataša, Milanović, Predrag, Međo, Bojan, Vuksanović, Marija M., Veljović, Đorđe, Rakin, Marko, Jančić-Heinemann, Radmila, "Image analysis and the finite element method in the characterization of the influence of porosity parameters on the mechanical properties of porous EVA/PMMA polymer blends" in Mechanics of Materials, 129 (2019):1-14, https://doi.org/10.1016/j.mechmat.2018.10.008 . .