0000000000459151

AUTHOR

Umberto Galietti

showing 4 related works from this author

Analisi quantitativa dell'effetto termoelastico in materiali compositi CFRP

2008

Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineEffetto Termoelastico Materiali compositi CFRPThermnoelastic Effect Composite Materials CFRP
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Investigation on the influence of the surface resin rich layer on the thermoelastic signal from different composite laminate lay-ups

2006

This work presents a set of experimental results based on the measured thermoelastic signal from GRP composite coupons adopting different lay-ups. A comparison is made with the thermoelastic signal predicted by two different analytical models: one based on the classical law of the thermoelastic effect for orthotropic materials, and the other based on a novel theory accounting for the presence of a resin layer on the external surface of the composite structure. The composite coupons were designed such to determine a significant difference in the predictions made by the two theoretical models. Experimental results have shown a far better match with the predictions based on the novel theory ac…

Surface (mathematics)Work (thermodynamics)Materials scienceComposite numberTheoretical modelsThermoelastic stress analysisDeltatherm Glass Reinforced Composite Laminates Strain Witness Thermoelastic Stress AnalysisThermoelastic stress analysis; glass reinforced composite laminates; strain witness; DeltaThermGeneral MedicineOrthotropic materialSignalSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineThermoelastic dampingglass reinforced composite laminatesDeltaThermComposite materialstrain witnessLayer (electronics)
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A quantitative investigation on the thermoelastic effect of CFRP laminates

2009

The thermoelastic effect on CFRP laminates with various lay-ups is investigated. A thick low crimp unidirectional fabric reinforcement is adopted. The measured thermoelastic signal is compared with predictions from two analytical models based on the meso-mechanical bulk properties of the lamina and on assuming a strain witness behaviour of the surface resin rich layer.

Laminates theorySettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineCarbon Fibre Reinforced Plastics Laminates Theory Thermoelastic Stress AnalysisCarbon fibre reinforced plastics; Laminates theory; Thermoelastic stress analysisThermoelastic stress analysisCarbon fibre reinforced plastics
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A Quantitative Analysis of the Thermoelastic Effect in CFRP Composite Materials

2010

:  In this study the thermoelastic signal from carbon fibre-reinforced plastic (CFRP) laminates is investigated. A comparison between the theoretical and experimental values of the thermoelastic signal is reported, with the theoretical predictions obtained from two different quantitative models. These models are based on the classic thermoelastic effect law extended to the case of orthotropic materials (by using the mesomechanical or bulk approach), and the modified law assuming that the surface resin-rich layer behaves as a strain witness of the laminate. It is found that the theoretical predictions of the two models can be strongly and differently influenced by the intrinsic orthotropy of…

chemistry.chemical_classificationMaterials scienceLaminate theoryMechanical EngineeringPolymerOrthotropic materialSignalThermal expansionMatrix (mathematics)Thermoelastic dampingchemistryMechanics of MaterialsUltimate tensile strengthComposite materialStrain
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