Aufsatz
In-situ full-field deformation analysis of injection-molded microcellular polycarbonate according to foam morphology patterns
Abstract
Deformation behavior of microcellular foam materials are sensitive to microstructural details. Therefore, the distinctive foam morphology patterns of foam injection-molded Polycarbonate are identified. These morphology patterns are investigated regarding their cell size, distance between cells, cell density, density reduction, homogeneity of cell size distribution, sphericity of cells and cell volume. Consequently, the predefined foam morphologies, the resulting modulus of elasticity and the elongation at break are compared to understand extensively how the deformation of foam structures depends on morphological properties. The detection and propagation of cracks are monitored using a 3D Digital Image Correlation technique. According to results, the morphology patterns which are presenting identical mechanical properties, exhibit distinctive differences during crack initiation and propagation. The highly localized strain distribution becomes more inhomogeneous beyond the yield point. Differences in the homogeneity as well as the distance between cells lead to dissimilarities in the localized high-strain fields.
Citation
In: Polymer Testing Volume 124 (2023-06-02) eissn:0142-9418Citation
@article{doi:10.17170/kobra-2024051010133,
author={Güzel, Kübra and Zarges, Jan-Christoph and Heim, Hans-Peter},
title={In-situ full-field deformation analysis of injection-molded microcellular polycarbonate according to foam morphology patterns},
journal={Polymer Testing},
year={2023}
}
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2024-05-10T09:02:17Z 2024-05-10T09:02:17Z 2023-06-02 doi:10.17170/kobra-2024051010133 http://hdl.handle.net/123456789/15746 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ Digital image correlation Foam morphology Foam injection molding Polycarbonate Tensile test Strain localization 600 In-situ full-field deformation analysis of injection-molded microcellular polycarbonate according to foam morphology patterns Aufsatz Deformation behavior of microcellular foam materials are sensitive to microstructural details. Therefore, the distinctive foam morphology patterns of foam injection-molded Polycarbonate are identified. These morphology patterns are investigated regarding their cell size, distance between cells, cell density, density reduction, homogeneity of cell size distribution, sphericity of cells and cell volume. Consequently, the predefined foam morphologies, the resulting modulus of elasticity and the elongation at break are compared to understand extensively how the deformation of foam structures depends on morphological properties. The detection and propagation of cracks are monitored using a 3D Digital Image Correlation technique. According to results, the morphology patterns which are presenting identical mechanical properties, exhibit distinctive differences during crack initiation and propagation. The highly localized strain distribution becomes more inhomogeneous beyond the yield point. Differences in the homogeneity as well as the distance between cells lead to dissimilarities in the localized high-strain fields. open access Güzel, Kübra Zarges, Jan-Christoph Heim, Hans-Peter doi:10.1016/j.polymertesting.2023.108102 Schaumkunststoff Spritzgießen Polycarbonate Schadensmechanik Zugversuch publishedVersion eissn:0142-9418 Polymer Testing Volume 124 false Article:108102
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