Search results for " Surface finish"

showing 3 items of 3 documents

Influence of initial treatments of aluminium on the morphological features of electrochemically formed alumina membranes

2003

Abstract The fabrication of alumina membranes by electrochemical oxidation of annealed aluminium was investigated. Porous layers were grown in 0.4 M H3PO4 at −1 and 5 °C at different anodising times. The morphology of the outer surface was found to be dependent on temperature and charge density, with both determining the extent of chemical dissolution of the anodic oxide. The inner-surface morphology was found to depend on the applied voltage only. The chemical dissolution rate of anodic oxide grown on annealed aluminium was found to be lower than that formed on unannealed aluminium under otherwise identical conditions. Such a difference in behaviour is explained in terms of a higher finish…

Alumina membrane Aluminium anodising Annealing Surface finishingFabricationMaterials scienceAnodizingAnnealing (metallurgy)Metallurgychemistry.chemical_elementCharge densityBioengineeringElectrochemistryBiomaterialschemistryChemical engineeringMechanics of MaterialsAluminiumPorositySurface finishing
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EFFECT OF SURFACE FINISH ON THE TENSILE BEHAVIOR OF DACRON© 360 WOVEN

2011

Nel presente lavoro vengono presentate alcune indagini sperimentali mirate alla caratterizzazione dell’effetto del trattamento superficiale sul comportamento costitutivo di un tessuto in Dacron© 360. Tale tessuto, largamente utilizzato nella realizzazione di vele, è ottenuto dalla tessitura di fili di polietilene tereftalato (PET) e presenta alcune peculiarità dovute al processo manifatturiero. Le prove di trazione realizzate evidenziano le caratteristiche di ortotropia del materiale e l’effetto del trattamento superficiale che si manifesta principalmente in un comportamento più rigido nella direzione dell’ordito ed in quella inclinata e in un aumento della resistenza ultima in tutte le dir…

Settore ICAR/08 - Scienza Delle CostruzioniDacron Comportamento costitutivo Tessuti Finitura superficiale.Dacron Mechanical behavior Woven Surface finish.
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Effect of surface finish on the mechanical behaviour of Dacron© 360 woven

2013

Abstract In the present paper some experimental analyses of Dacron© 360 woven with and without surface treatment are presented to evaluate the effect of this treatment on the constitutive behaviour. This woven, widely adopted in sail manufacturing, is obtained by weaving polyethylene terephthalate (PET) yarn and it shows some peculiar features due to the manufacturing process. The experimental tensile tests, clearly show the orthotropy behaviour of the material. The effect of the treatment results in a stiffer behaviour especially along the warp and bias direction and in an increment of ultimate strength in all directions.

Environmental EngineeringMaterials scienceManufacturing processbusiness.industryDacron Mechanical behavior Woven Surface finishOcean EngineeringSurface finishYarnStructural engineeringTreatment resultschemistry.chemical_compoundchemistryvisual_artUltimate tensile strengthPolyethylene terephthalatevisual_art.visual_art_mediumSettore ICAR/08 - Scienza Delle CostruzioniWeavingbusinessOcean Engineering
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