20.500.12556/DiRROS-16481 Mode I fracture of beech-adhesive bondline at three different temperatures Single edge-notched three-point bending tests (SEN-TPB) for mode I were utilized to experimentallyevaluate fracture properties of adhesive bondlines in European beech (Fagus SylvaticaL.). Thebondline was examined at two anatomical planes with TR and RT orientation and at control andtwo elevated temperatures (70°C and 140°C). Among epoxy (EPI), melamine-urea formaldehyde (MUF), and polyurethane (PUR) adhesives, the highest average critical energyGcwith 0.80 N/mmand fracture energyGfwith 1079.4 N/mm were obtained for EPI in the TR plane and understandard climate conditions (20°C/65% relative humidity), followed by MUF (Gc= 0.50 N/mm andGf= 620 N/mm) and PUR (Gc= 0.25 N/mm andGf= 290.9 N/mm), respectively. PUR was leasteffected by elevated temperature, and no significant differences forGcandGfbetween TR and RTbondline orientations were found for MUF and PUR treated at 20°C/65% relative humidity whilecomparisons between other factors varied significantly. Treatment of specimens at elevatedtemperatures resulted in reduced fracture performance regardless of wood grain orientation orthe adhesive system. crack fracture grain orientation temperature European Beech odprti dostop razpoka lom orientacija lesa temperatura Evropska bukovina open access true false true Taylor & Francis Angleški jezik Slovenski jezik © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group Neznano 2023-05-03 14:40:31 2023-05-03 14:52:16 2024-03-19 03:44:37 0000-00-00 00:00:00 2022 0 0 Soavtorji: Andreja Pondelak, Michael David Burnard and Václav Sebera; str. 1349-1359 iss. 4 Vol. 18 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-11-07 630*3 1748-0272 10.1080/17480272.2022.2135135 135318531 https://www.tandfonline.com/doi/full/10.1080/17480272.2022.2135135 1 efa49f5f-e99e-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22245 https://doi.org/10.1080/17480272.2022.2135135 1 f2666459-e99e-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22246 RAZ_Pecnik_Jaka_Gasper_2022.pdf RAZ_Pecnik_Jaka_Gasper_2022.pdf 1 E16D440C94EA61B4B616C6F04E3F38AE 3cad20e0ec65a0fac90c1d6610717f54b2473a970a14431ce5c08f4d58b8edd5 1fd15efc-e4fc-11ee-9dd4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25103 RAZ_Pecnik_Jaka_Gasper_2022.docx RAZ_Pecnik_Jaka_Gasper_2022.docx 1 5FE1DE2384BA049791B7622887F1449F 55b295c0abd265ae3ae5a978737ab081c06609a58760fa7303543018ad59c67b 7858c883-e9a0-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22248 RAZ_Pecnik_Jaka_Gasper_2022.docx RAZ_Pecnik_Jaka_Gasper_2022.docx 1 1F690C5D3F0EE986C500B92818B6E7C1 32a5d3cc2508b62f42c1a717d7b3030e40918e57b3b4e9fa0f25f34f9d2fad07 7ed79164-e9a0-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22249 Zavod za gradbeništvo Slovenije 0 0 0