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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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Marcon, Bertrand
Laboratoire Bourguignon des Matériaux et Procédés
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Identification of local to global mechanical properties of clear wood peeled veneers from off axis tensile tests using full-field local displacement measurements
- 2023Tribological Analysis of Several Coatings under Flood and Cryogenic Cooling Conditionscitations
- 2023Specific cutting coefficients for the most common engineered wood products
- 2023Heat treatment of poplar plywood: modifications in physical, mechanical and durability propertiescitations
- 2023Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurements to Model and Manufacture Stiffness Optimized Structural Beams
- 2021New Perspectives for LVL Manufacturing from Wood of Heterogeneous Quality—Part. 1: Veneer Mechanical Grading Based on Online Local Wood Fiber Orientation Measurementcitations
- 2021BURR FORMATION AT THE INTERFACE DURING BI-MATERIAL ORTHOGONAL CUTTING
- 2020Investigations on Strain Hardening During Cutting of Heat-Resistant Austenitic Stainless Steelcitations
- 2020Investigations on Strain Hardening During Cutting of Heat-Resistant Austenitic Stainless Steelcitations
- 2020Investigations on drilling performance of high resistant austenitic stainless steelcitations
- 2019Optimization-based procedure for the determination of the constitutive model coefficients used in machining simulationscitations
- 2019Investigations on exit burr formation mechanisms based on digital image correlation and numerical modellingcitations
- 2019Investigations on exit burr formation mechanisms based on digital image correlation and numerical modellingcitations
- 2019Mechanical analysis of local cutting forces and transient state when drilling of heat-resistant austenitic stainless steelcitations
- 2018Fundamental study of exit burr formation mechanisms during orthogonal cutting of AlSi aluminium alloycitations
- 2018Fundamental study of exit burr formation mechanisms during orthogonal cutting of AlSi aluminium alloycitations
- 2018Mechanical study in drilling of heat resistant austenitic stainless steelcitations
- 2016Experimental Investigation and Modelling of Burr Formation during Orthogonal Cutting of A356+0.5Cu Aluminium Alloy
- 2016Experimental Investigation and Modelling of Burr Formation during Orthogonal Cutting of A356+0.5Cu Aluminium Alloy
- 2011Experimental studies on the wooden support of the "Mona Lisa"
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document
Experimental studies on the wooden support of the "Mona Lisa"
Abstract
The “Mona Lisa” (Louvre Museum, Paris) has been painted during the period 1503-1514 by Leonardo da Vinci on a panel of Poplar (Populus alba L.) ~79 x 53 cm, ~ 13 mm thick.The panel, which features a complex double curvature, is affected by a ~11 cm-long crack, possibly dating not long after the painting was made, running through the whole thickness, tightly connected with the pattern of permanent curvature.The panel is inserted in an Oak frame (“châssis-cadre”), and is slightly forced against it by means of four cross-beams, which hold it flatter than it would be if unconstrained.Since the “Mona Lisa” was going to be moved in a new display case in the “Salle des États”, in 2004 the Curators of the Louvre Museum asked us the main following questions:– evaluate climatic specifications for the new display case– assess the risk of crack propagation– suggest possible modifications to the frame (“châssis-cadre”)– improve the monitoring procedure (the display case gets opened yearly, to check the conditions of the painting).Our group studied the panel’s geometry, the anatomical and physical properties of the panel’s wood, and evaluated the constraint conditions produced by the frame. We also designed and implemented, among others, techniques and equipment: for manual measurements, to be performed on the panel, on the occasion of the yearly opening (weight, shape, forces exerted by the cross-beams). for automatic monitoring deformations and forces exerted by the cross-beams, during the normal stay of the panel in the display case, where the climate is tightly controlled, but however some slight variations of T and RH inevitably occur and produce some very small distortions.In 2006 a Book was published, summarizing the results of the several researches carried out on the “Mona Lisa” in that period. Among several other results, the following were obtained and described in such book. The observed trend for deflection of the Panel could be well predicted by a heat & mass transfer + hygromechanical computer model. The risk of crack propagation has also been assessed, on the basis of the computer model and by means of Griffith theory. This study keeps ongoing, every year we are present at the opening of the display case. Data obtained so far provides valuable information on this Panel’s behaviour; data analysis and mechanical modeling provide promising results also for Panel Paintings in general – work is still in progress.