Mode II fracture toughness of asymmetric metal-composite adhesive joints
The paper presents an experimental investigation of the mode II fracture toughness behavior of dissimilar metal-composite adhesive joints using the end-notched flexure (ENF) test. The adhesive joint under study consists of a thin titanium sheet joined with a thin CFRP laminate and is envisioned tobe...
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EDP Sciences
2019-01-01
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Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2019/53/matecconf_easn2019_01004.pdf |
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doaj-4e7a3ed002c8411fbe85f62936f8f0fa2021-04-02T14:47:28ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-013040100410.1051/matecconf/201930401004matecconf_easn2019_01004Mode II fracture toughness of asymmetric metal-composite adhesive jointsTsokanas PanayiotisLoutas TheodorosPegkos DimitriosSotiriadis GeorgeKostopoulos VassilisThe paper presents an experimental investigation of the mode II fracture toughness behavior of dissimilar metal-composite adhesive joints using the end-notched flexure (ENF) test. The adhesive joint under study consists of a thin titanium sheet joined with a thin CFRP laminate and is envisioned tobe applied in the hybrid laminar flow control system of future aircraft. Four different industrial technologies for the manufacturing of the joint areevaluated; co-bonding with and without adhesive and secondary bonding using either a thermoset or a thermoplastic composite. The vacuum-assisted resin transfer molding (VARTM) technique is employed for the manufacturing of the titanium-CFRP joint. After manufacturing, the joint is stiffened from its both sides with two aluminum backing beams to prevent large deformations during the subsequent ENF tests. Towards the fracture toughness determination from the experimental data, an analytical model recently reported by the authors is applied; that model considers the bending-extension coupling of each sub-laminate of the joint as well as the effect of the manufacturing-induced residual thermal stresses. The load-displacement behaviors, failure patterns, and fracture toughness performances for each of the four manufacturing options (MO) investigated are presented and compared.https://www.matec-conferences.org/articles/matecconf/pdf/2019/53/matecconf_easn2019_01004.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tsokanas Panayiotis Loutas Theodoros Pegkos Dimitrios Sotiriadis George Kostopoulos Vassilis |
spellingShingle |
Tsokanas Panayiotis Loutas Theodoros Pegkos Dimitrios Sotiriadis George Kostopoulos Vassilis Mode II fracture toughness of asymmetric metal-composite adhesive joints MATEC Web of Conferences |
author_facet |
Tsokanas Panayiotis Loutas Theodoros Pegkos Dimitrios Sotiriadis George Kostopoulos Vassilis |
author_sort |
Tsokanas Panayiotis |
title |
Mode II fracture toughness of asymmetric metal-composite adhesive joints |
title_short |
Mode II fracture toughness of asymmetric metal-composite adhesive joints |
title_full |
Mode II fracture toughness of asymmetric metal-composite adhesive joints |
title_fullStr |
Mode II fracture toughness of asymmetric metal-composite adhesive joints |
title_full_unstemmed |
Mode II fracture toughness of asymmetric metal-composite adhesive joints |
title_sort |
mode ii fracture toughness of asymmetric metal-composite adhesive joints |
publisher |
EDP Sciences |
series |
MATEC Web of Conferences |
issn |
2261-236X |
publishDate |
2019-01-01 |
description |
The paper presents an experimental investigation of the mode II fracture toughness behavior of dissimilar metal-composite adhesive joints using the end-notched flexure (ENF) test. The adhesive joint under study consists of a thin titanium sheet joined with a thin CFRP laminate and is envisioned tobe applied in the hybrid laminar flow control system of future aircraft. Four different industrial technologies for the manufacturing of the joint areevaluated; co-bonding with and without adhesive and secondary bonding using either a thermoset or a thermoplastic composite. The vacuum-assisted resin transfer molding (VARTM) technique is employed for the manufacturing of the titanium-CFRP joint. After manufacturing, the joint is stiffened from its both sides with two aluminum backing beams to prevent large deformations during the subsequent ENF tests. Towards the fracture toughness determination from the experimental data, an analytical model recently reported by the authors is applied; that model considers the bending-extension coupling of each sub-laminate of the joint as well as the effect of the manufacturing-induced residual thermal stresses. The load-displacement behaviors, failure patterns, and fracture toughness performances for each of the four manufacturing options (MO) investigated are presented and compared. |
url |
https://www.matec-conferences.org/articles/matecconf/pdf/2019/53/matecconf_easn2019_01004.pdf |
work_keys_str_mv |
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