The notch effect on fracture of polyurethane materials
This paper investigates the fracture properties and notch effect of PUR materials with four different densities. The asymmetric semi-circular bend specimen was adapted to perform mixed mode fracture toughness tests. This semi-circular specimen with radius R, which contains an edge crack of length...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-10-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_14.pdf |
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| _version_ | 1841562906365263872 |
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| author | T. Voiconi R. Negru E. Linul L. Marsavina H. Filipescu |
| author_facet | T. Voiconi R. Negru E. Linul L. Marsavina H. Filipescu |
| author_sort | T. Voiconi |
| collection | DOAJ |
| description | This paper investigates the fracture properties and notch effect of PUR materials with four
different densities. The asymmetric semi-circular bend specimen was adapted to perform mixed mode fracture
toughness tests. This semi-circular specimen with radius R, which contains an edge crack of length a oriented
normal to the specimen edge, loaded with a three point bending fixture, was proved to give wide range of mixed
modes from pure mode I to pure mode II, only by changing the position of one support. Different types of
notched specimens were considered for notch effect investigations and the Theory of Critical Distances was
applied. It could be seen that the critical distances are influenced by the cellular structure of investigated
materials |
| format | Article |
| id | doaj-art-2bb9b1122edd4ae1bda7f04259ef42ad |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2014-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-2bb9b1122edd4ae1bda7f04259ef42ad2025-01-03T00:39:26ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932014-10-0183010110810.3221/IGF-ESIS.30.14 The notch effect on fracture of polyurethane materialsT. Voiconi 0R. Negru 1E. Linul 2L. Marsavina 3H. Filipescu 4University Politehnica Timisoara University Politehnica Timisoara University Politehnica Timisoara University Politehnica Timisoara University Politehnica Timisoara This paper investigates the fracture properties and notch effect of PUR materials with four different densities. The asymmetric semi-circular bend specimen was adapted to perform mixed mode fracture toughness tests. This semi-circular specimen with radius R, which contains an edge crack of length a oriented normal to the specimen edge, loaded with a three point bending fixture, was proved to give wide range of mixed modes from pure mode I to pure mode II, only by changing the position of one support. Different types of notched specimens were considered for notch effect investigations and the Theory of Critical Distances was applied. It could be seen that the critical distances are influenced by the cellular structure of investigated materialshttp://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_14.pdfPolyurethane materialsNotch effectFracture toughnessTheory of critical distances |
| spellingShingle | T. Voiconi R. Negru E. Linul L. Marsavina H. Filipescu The notch effect on fracture of polyurethane materials Fracture and Structural Integrity Polyurethane materials Notch effect Fracture toughness Theory of critical distances |
| title | The notch effect on fracture of polyurethane materials |
| title_full | The notch effect on fracture of polyurethane materials |
| title_fullStr | The notch effect on fracture of polyurethane materials |
| title_full_unstemmed | The notch effect on fracture of polyurethane materials |
| title_short | The notch effect on fracture of polyurethane materials |
| title_sort | notch effect on fracture of polyurethane materials |
| topic | Polyurethane materials Notch effect Fracture toughness Theory of critical distances |
| url | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_14.pdf |
| work_keys_str_mv | AT tvoiconi thenotcheffectonfractureofpolyurethanematerials AT rnegru thenotcheffectonfractureofpolyurethanematerials AT elinul thenotcheffectonfractureofpolyurethanematerials AT lmarsavina thenotcheffectonfractureofpolyurethanematerials AT hfilipescu thenotcheffectonfractureofpolyurethanematerials AT tvoiconi notcheffectonfractureofpolyurethanematerials AT rnegru notcheffectonfractureofpolyurethanematerials AT elinul notcheffectonfractureofpolyurethanematerials AT lmarsavina notcheffectonfractureofpolyurethanematerials AT hfilipescu notcheffectonfractureofpolyurethanematerials |