On the crack path under mixed mode loading on PUR foams
In this paper are presented the crack initiation angles obtained in polyurethane (PUR) foams under mixed mode loading. Closed cell rigid PUR foams having three different densities 100, 145, and 300 kg/m3 were investigated. Experiments were performed using Asymmetric Semi-Circular Bend and Single Edg...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2015-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1594 |
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| author | L. Marsavina E. Linul T. Voiconi D. M. Constantinescu D. A. Apostol |
| author_facet | L. Marsavina E. Linul T. Voiconi D. M. Constantinescu D. A. Apostol |
| author_sort | L. Marsavina |
| collection | DOAJ |
| description | In this paper are presented the crack initiation angles obtained in polyurethane (PUR) foams under mixed
mode loading. Closed cell rigid PUR foams having three different densities 100, 145, and 300 kg/m3 were investigated.
Experiments were performed using Asymmetric Semi-Circular Bend and Single Edge Crack specimens.
The obtained crack initiation values were compared with four fracture criteria to introduce: Maximum Tensile Stress, Strain Energy Density, Maximum Energy Release Rate and Equivalent Stress Intensity Factor, and a good agreement was observed. This allow to conclude that the theoretical fracture criteria developed for solid material could be used with success to predict the crack propagation angles in cellular materials like PUR foams. |
| format | Article |
| id | doaj-art-9e1f2b0365e84cf4bbcf7e59f6044ef3 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2015-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-9e1f2b0365e84cf4bbcf7e59f6044ef32025-01-02T20:55:50ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-09-01934On the crack path under mixed mode loading on PUR foamsL. MarsavinaE. LinulT. VoiconiD. M. ConstantinescuD. A. ApostolIn this paper are presented the crack initiation angles obtained in polyurethane (PUR) foams under mixed mode loading. Closed cell rigid PUR foams having three different densities 100, 145, and 300 kg/m3 were investigated. Experiments were performed using Asymmetric Semi-Circular Bend and Single Edge Crack specimens. The obtained crack initiation values were compared with four fracture criteria to introduce: Maximum Tensile Stress, Strain Energy Density, Maximum Energy Release Rate and Equivalent Stress Intensity Factor, and a good agreement was observed. This allow to conclude that the theoretical fracture criteria developed for solid material could be used with success to predict the crack propagation angles in cellular materials like PUR foams.https://www.fracturae.com/index.php/fis/article/view/1594PUR foams |
| spellingShingle | L. Marsavina E. Linul T. Voiconi D. M. Constantinescu D. A. Apostol On the crack path under mixed mode loading on PUR foams Fracture and Structural Integrity PUR foams |
| title | On the crack path under mixed mode loading on PUR foams |
| title_full | On the crack path under mixed mode loading on PUR foams |
| title_fullStr | On the crack path under mixed mode loading on PUR foams |
| title_full_unstemmed | On the crack path under mixed mode loading on PUR foams |
| title_short | On the crack path under mixed mode loading on PUR foams |
| title_sort | on the crack path under mixed mode loading on pur foams |
| topic | PUR foams |
| url | https://www.fracturae.com/index.php/fis/article/view/1594 |
| work_keys_str_mv | AT lmarsavina onthecrackpathundermixedmodeloadingonpurfoams AT elinul onthecrackpathundermixedmodeloadingonpurfoams AT tvoiconi onthecrackpathundermixedmodeloadingonpurfoams AT dmconstantinescu onthecrackpathundermixedmodeloadingonpurfoams AT daapostol onthecrackpathundermixedmodeloadingonpurfoams |