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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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Fernandes, Jra
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Topics
Publications (12/12 displayed)
- 2017The role of PbTiO3 layers in piezoelectric multilayer composite films based on Pb(Mg1/3Nb2/3)O-3-PbTiO3citations
- 2017Deposition parameters and annealing key role in setting structural and polar properties of Bi0.9La0.1Fe0.9Mn0.1O3 thin filmscitations
- 2015Fracture behaviour of wood bonded joints under modes i and II by digital image correlation and fibre Bragg grating sensorscitations
- 2014Morphotropic Phase Boundary in Solution- Derived ( Bi0.5Na0.5) 1-xBaxTiO3 Thin Films: Part II Functional Properties and Phase Stabilitycitations
- 2013Room temperature structure and multiferroic properties in Bi0.7La0.3FeO3 ceramicscitations
- 2012Properties of multilayer composite thin films based on morphotropic phase boundary Pb(Mg1/3Nb2/3)O-3-PbTiO3citations
- 2006Optimization of the fabrication parameters of PZT 52/48 thin films by pulsed laser ablationcitations
- 2005Bottom electrode crystallization of Pb(Zr, Ti)O-3 thin films made by RF magnetron sputteringcitations
- 2003Barium metaplumbate thin film electrodes for ferroelectric devicescitations
- 2003Simple method for crystallizing ceramic thin films using platinum bottom electrodes as resistive heating elementscitations
- 2003Pulsed laser deposition of barium metaplumbate thin films for ferroelectric capacitorscitations
- 2002Interactions at zirconia-Au-Ti interfaces at high temperaturescitations
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article
Fracture behaviour of wood bonded joints under modes i and II by digital image correlation and fibre Bragg grating sensors
Abstract
Direct identification of cohesive laws in modes I and II of wood bonded joints is addressed by the double cantilever beam (DCB) and end-notched flexure (ENF) tests, respectively. Moreover, the development and extension of fracture process zone (FPZ) ahead of the initial crack tip, is analysed by means of digital image correlation (DIC) and embedded fibre Bragg grating (FBG) sensors. From FBG spectral response, the spectrum geometric mean is determined and the strain induced by wavelength variation employed to identify the initial and final stages of the FPZ. These stages are used to consistently define the cohesive laws in both modes I and II. Resistance-curves are determined from the compliance-based beam method (CBBM). Besides, the crack tip opening displacements (CTOD) are determined by post-processing displacement field provided by DIC around the initial crack tip. The strain energy release rate as a function of the CTOD are then determined for both mode I and mode II. The respective cohesive laws are reconstructed by numerical approximation and differentiation. It is concluded that the proposed data reduction scheme is effective to determine both the FPZ development phase and the corresponding cohesive laws of wood bonded joints in both mode I and mode II.