Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior
This study comprehensively examines the influence of density on the energy absorption capacity and the time-dependent behavior of polyurethane microcellular elastomers (PUMEs) under compression. On the one hand, to evaluate the energy absorption capacity, stress-strain curves, which can be modelled...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028680 |
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| author | Julen Cortazar-Noguerol Fernando Cortés María Jesús Elejabarrieta |
| author_facet | Julen Cortazar-Noguerol Fernando Cortés María Jesús Elejabarrieta |
| author_sort | Julen Cortazar-Noguerol |
| collection | DOAJ |
| description | This study comprehensively examines the influence of density on the energy absorption capacity and the time-dependent behavior of polyurethane microcellular elastomers (PUMEs) under compression. On the one hand, to evaluate the energy absorption capacity, stress-strain curves, which can be modelled as a bilinear elastic behavior, are obtained for three different densities at two different loading rates. The data show that higher-density PUMEs exhibit greater stiffness, which is also dependent on the loading rate. Additionally, the lowest density material demonstrates the highest energy absorption efficiency at lower peak stresses and increasing the loading rate reduces efficiency across all tested densities. On the other hand, the time dependent properties are characterized through the relaxation modulus of each of the densities. To obtain it, creep experimental data is gathered and converted to relaxation through the convolution relationship between these two properties by means of Maxwell and Kelvin generalized models. The results indicate increased stiffness and longer relaxation times for higher-density PUMEs, suggesting slower responses and lower deformations under the same load. In conclusion, the increased stiffness and reduced creep compliance make higher-density PUMEs suitable for high load-bearing applications, while lower-density PUMEs are better suited for high energy absorption at lower stresses. |
| format | Article |
| id | doaj-art-59007ff579a34cf4945ac31a42526433 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-59007ff579a34cf4945ac31a425264332025-01-19T06:25:15ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134439448Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behaviorJulen Cortazar-Noguerol0Fernando Cortés1María Jesús Elejabarrieta2Corresponding author.; Department of Mechanics, Design and Industrial Management, University of Deusto, Avda. de las Universidades 24, 48007, Bilbao, SpainDepartment of Mechanics, Design and Industrial Management, University of Deusto, Avda. de las Universidades 24, 48007, Bilbao, SpainDepartment of Mechanics, Design and Industrial Management, University of Deusto, Avda. de las Universidades 24, 48007, Bilbao, SpainThis study comprehensively examines the influence of density on the energy absorption capacity and the time-dependent behavior of polyurethane microcellular elastomers (PUMEs) under compression. On the one hand, to evaluate the energy absorption capacity, stress-strain curves, which can be modelled as a bilinear elastic behavior, are obtained for three different densities at two different loading rates. The data show that higher-density PUMEs exhibit greater stiffness, which is also dependent on the loading rate. Additionally, the lowest density material demonstrates the highest energy absorption efficiency at lower peak stresses and increasing the loading rate reduces efficiency across all tested densities. On the other hand, the time dependent properties are characterized through the relaxation modulus of each of the densities. To obtain it, creep experimental data is gathered and converted to relaxation through the convolution relationship between these two properties by means of Maxwell and Kelvin generalized models. The results indicate increased stiffness and longer relaxation times for higher-density PUMEs, suggesting slower responses and lower deformations under the same load. In conclusion, the increased stiffness and reduced creep compliance make higher-density PUMEs suitable for high load-bearing applications, while lower-density PUMEs are better suited for high energy absorption at lower stresses.http://www.sciencedirect.com/science/article/pii/S2238785424028680Polyurethane microcellular Elastomer (PUME)Density influenceCreep behaviorEnergy absorption efficiencyViscoelastic propertiesMechanical characterization |
| spellingShingle | Julen Cortazar-Noguerol Fernando Cortés María Jesús Elejabarrieta Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior Journal of Materials Research and Technology Polyurethane microcellular Elastomer (PUME) Density influence Creep behavior Energy absorption efficiency Viscoelastic properties Mechanical characterization |
| title | Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior |
| title_full | Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior |
| title_fullStr | Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior |
| title_full_unstemmed | Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior |
| title_short | Influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time-dependent behavior |
| title_sort | influence of density of a polyurethane microcellular elastomer foam on its compressive energy absorption and time dependent behavior |
| topic | Polyurethane microcellular Elastomer (PUME) Density influence Creep behavior Energy absorption efficiency Viscoelastic properties Mechanical characterization |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028680 |
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