Sustainable Sandwich Panels Made of Aluminium Skins and Bamboo Rings
Autor: | André Luis Christoforo, Jacob Nicholas Orth, Rodrigo Teixeira Santos Freire, Fabrizio Scarpa, Túlio Hallak Panzera, Lívia Ávila de Oliveira |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Bamboo
Materials science 0211 other engineering and technologies Bamboo rings Aluminium surface treatment chemistry.chemical_element Core (manufacturing) Mechanical properties 02 engineering and technology Sandwich panel Shear modulus Flexural strength Aluminium 021105 building & construction Shear stress General Materials Science Composite material Materials of engineering and construction. Mechanics of materials Sandwich-structured composite Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Design of Experiment chemistry Mechanics of Materials Sandwich panels TA401-492 0210 nano-technology |
Zdroj: | Materials Research v.24 n.4 2021 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 24, Issue: 4, Article number: e20200543, Published: 24 MAY 2021 Materials Research, Vol 24, Iss 4 (2021) |
Popis: | This work investigates the mechanical behaviour of a sustainable sandwich panel, consisting of bamboo rings core, treated aluminium skins and epoxy adhesive. A Design of Experiment (DoE) is used to identify the effects of bamboo diameters (30 and 45 mm) and aluminium skin treatments (alkaline degreasing and application of primer) on the mechanical and physical properties of sandwich panels. The aluminium skins treated with the wash primer significantly increase adhesion to the polymer, resulting in greater maximum load, flexural strength, maximum skin stress and maximum core shear stress; while the skins treated with NaOH resulted in a greater flexural and core shear modulus. Relatively more rigid and resistant structures are obtained with Ø30 mm rings, due to the increased surface contact area and the number of constraints on the core. The samples fail due to the skin fracture, implying an efficient face-core bond that is attributed to the proper absorption of the polymer by bamboo and the treatment of the aluminium surface. The proposed panels present good mechanical performance, proving to be a feasible and promising alternative for secondary structural applications. |
Databáze: | OpenAIRE |
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