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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Moreira Arouche, Marcio
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Effect Of Temperature On The Mode II Fatigue Delamination Of A Glass Fiber Reinforced Polymer (Gfrp)
- 2024Fatigue crack growth characterization of composite-to-steel bonded interface using ENF and 4ENF testscitations
- 2024Mode I fracture behavior of glass fiber composite-steel bonded interfacecitations
- 2023Influence of surface roughness on the mode II fracture toughness and fatigue resistance of bonded composite-to-steel jointscitations
- 2021On the influence of glass fiber mat on the mixed-mode fracture of composite-to-metal bonded jointscitations
- 2021On the influence of glass fiber mat on the mixed-mode fracture of composite-to-metal bonded jointscitations
- 2021Evaluation of the strain-based partitioning method for mixed-mode I+II fracture of bi-material crackscitations
- 2019Strain-based methodology for mixed-mode I plus II fracture: A new partitioning method for bi-material adhesively bonded jointscitations
- 2018Interlaminar adhesion assessment of carbon-epoxy laminates under salt water ageing using peel testscitations
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article
Influence of surface roughness on the mode II fracture toughness and fatigue resistance of bonded composite-to-steel joints
Abstract
Hybrid bi-material concepts in engineering structures where fibre-polymer composites are used together with steel structural members have potential to reduce material usage, extend fatigue life and improve structural reliability. The bond performance of the bi-material composite-to-steel interface is of crucial importance and highly relies on the surface preparation quality of the steel element. This paper investigates the influence of steel surface roughness on the mode II fracture toughness and fatigue crack growth behaviour of the bonded composite-to-steel joints. Glass fibre composite and mild structural steel material is considered directly bonded in a wet lay-up process. 4-point end notch flexure (4ENF) tests are conducted on specimens with the steel plates prepared with low, medium and high roughness, respectively. In addition, morphology of the fracture surfaces are characterised by a 3D profilemeter and the friction coefficient is measured by a tribometer for each roughness level. Results show that in quasi-static fracture, fibre bridging is dependent on the surface roughness. A roughness level with S q ≥ 22 µm of the steel surface can promote significant fibre bridging thus improved fracture toughness due to enlarged effective bonding area. Under cyclic loading, no fiber bridging is observed across all roughness levels tested. However, the Paris curve parameter C is significantly affected by the roughness level, which decreases by approximately 100 times as the steel surface roughness increases from the low level of S q = 5 µm to high level of S q = 22 µm. The m parameter of the Paris curve remains fairly constant across all the roughness levels tested. ; Steel & Composite Structures