2026-04-17T12:08:24Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/204592024-06-14T08:53:36Zcom_2072_452955com_2072_2054col_2072_453061

00925njm 22002777a 4500 dc Abdel Monsef, Said Ahmed Ibrahim author Renart Canalias, Jordi author Carreras Blasco, Laura author Turon Travesa, Albert author Maimí Vert, Pere author 2021-04-01 The effect of environmental conditions on the fracture behaviour of two types of adhesively bonded joints (wet-aged and non-aged) is experimentally studied under mode II loading. End Loaded Split tests were performed at various temperatures (−55 °C, room temperature (RT) and 80 °C) on non-aged and aged specimens. The non-aged specimens were stored in a laboratory under controlled conditions at RT (23 °C/55 RH) while the wet-aged specimens were exposed to accelerated ageing in an environmental chamber at 70 °C/85% RH for four years. The data reduction was applied using an inverse method and two other direct methods. A good agreement between these methods is observed. The analysis of the obtained results shows that extremely long aging times considerably affect the fracture response of bonded joints under mode II (the fracture toughness of the wet-aged specimens degraded by more than 30%). Furthermore, testing at high or cryogenic temperatures has a significant effect on the fracture response. Indeed, testing at high temperatures was observed to increase the fracture toughness (this increase ranged from 8% to 80%) while cryogenic temperatures increased the brittleness of the adhesive which caused a substantial reduction (more than 25%) in the fracture toughness of the bonded joint The first author would like to acknowledge the support of the Catalan Government (Agéncia de Gestió d’Ajuts Universitaris i de Recerca), under Grant 2017 FI_B 00100. This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) under contracts RTI2018-099373-B-I00 and RTI2018-097880-B-I00 Open Access funding provided thanks to the CRUE-CSIC agreement with Elsevier http://hdl.handle.net/10256/20459 Assaigs de materials Materials -- Testing Adhesius Adhesives Mecànica de fractura Fracture mechanics Effect of environment conditioning on mode II fracture behaviour of adhesively bonded joints