Search results for "Interlaminar Fracture Toughness"

showing 5 items of 5 documents

The effect of through-thickness compressive stress on mode II interlaminar fracture toughness

2017

Abstract The effect of through-thickness compressive stress on mode II interlaminar fracture toughness is investigated experimentally and replicated numerically. The modified Transverse Crack Tensile specimen recently proposed by the authors is used, together with an experimental device designed to apply a constant transverse compressive stress on the surface of the specimen. Experiments are conducted using IM7/8552 specimens for different compressive stresses, ranging from 0 to 100 MPa, covering all the practical applications commonly encountered in the aeronautical industry (e.g., tightened filled holes or bolted joints). It is shown that mode II interlaminar fracture toughness increases …

Compressive stressMaterials science/dk/atira/pure/subjectarea/asjc/2200/220502 engineering and technologyStress (mechanics)Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineFracture toughness0203 mechanical engineeringUltimate tensile strength/dk/atira/pure/subjectarea/asjc/2500/2503Composite materialSettore ING-IND/04 - Costruzioni E Strutture AerospazialiCivil and Structural Engineeringbusiness.industryMode (statistics)Numerical modelsStructural engineering021001 nanoscience & nanotechnologySettore ING-IND/02 - Costruzioni E Impianti Navali E MariniTransverse planeSettore ING-IND/22 - Scienza E Tecnologia Dei Materiali020303 mechanical engineering & transportsCompressive strengthMode II delaminationBolted jointCeramics and CompositesSettore ICAR/08 - Scienza Delle Costruzioni0210 nano-technologybusinessInterlaminar fracture toughnessComposite Structures
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Interlaminar fracture toughness behavior of electron-beam cured carbon-fiber reinforced epoxy-resin composites

2013

The work describes the preparation and physical-mechanical characterization of unidirectional CFRP panels manufactured by an electron beam curing technique. Delamination fracture toughness in Mode I and II is investigated in order to evaluate the influence of fiber–matrix adhesion strength, matrix toughness and matrix crosslinking density as determined by the radiation curing process. A matrix system comprising a DGEBA epoxy monomer and an initiator of cationic polymerization have been used, with one batch of resin mixed with a PES monomer in order to enhance matrix toughness. Curing was achieved with a pulsed 10 MeV Electron Beam accelerator. Thermally cured composite systems have also bee…

ToughnessMaterials sciencePolymers and PlasticsDelaminationComposite numberCationic polymerizationGeneral ChemistryEpoxyInterlaminar Fracture Toughness Electron-Beam Curing Carbon-Fiber Reinforced Plastic CompositesSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineFracture toughnessvisual_artMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumSettore CHIM/07 - Fondamenti Chimici Delle TecnologieComposite materialThermal analysisCuring (chemistry)Polymer Composites
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ELECTROSPUN NANOFIBROUS MATS IN FIBRE REINFORCED EPOXY LAMINATES

ElectrospinningInterlaminar fracture toughneHydrothermal agingNanofiberFiber reinforced epoxy composites; Electrospinning; Nanofiber; Interlaminar fracture toughness; Hydrothermal agingFiber reinforced epoxy composite
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Mode I interlaminar fracture toughness of thin-ply laminates with CNT webs at the crack interface

2019

Abstract Pristine and functionalized carbon nanotube (CNT) webs were introduced at the interlaminar region of two different thin-ply carbon fibre reinforced polymer systems (NTPT 402 prepreg, and TeXtreme/SE84LV). The Mode I interlaminar fracture toughness (ILFT) for the NTPT 402 material was substantially lower. In contrast when SE84LV resin was used, the resistance curves were virtually unchanged and with no depreciation in the steady state value of the ILFT. This demonstrates that a careful choice of the resin is essential to permit the embedding of CNT webs in thin-ply laminates without compromising structural performance and opens a new way towards the development of multifunctional th…

chemistry.chemical_classificationSteady stateMaterials science/dk/atira/pure/subjectarea/asjc/2200/220502 engineering and technologyPolymerCarbon nanotube021001 nanoscience & nanotechnologylaw.inventionA. Thin-ply laminatesC. Interlaminar fracture toughness020303 mechanical engineering & transportsFracture toughness0203 mechanical engineeringchemistrylawCeramics and CompositesB. Carbon nanotube (CNT) webs/dk/atira/pure/subjectarea/asjc/2500/2503Composite material0210 nano-technologyCivil and Structural Engineering
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The effect of the through-the-thickness compressive stress on mode II interlaminar fracture toughness

2017

The effect of through-the-thickness compressive stress on the mode II interlaminar fracture toughness is investigated experimentally and replicated numerically. The modified Transverse Crack Tensile specimen recently proposed by the authors is used, together with an experimental device designed to apply a constant transverse compressive stress on the surface of the specimen. Experiments are conducted using IM7/8552 specimens for different compressive stresses, ranging from 0 to 100 MPa, covering all the practical applications commonly encountered in the aeronautical industry (e.g., tightened filled holes or bolted joints). It is shown that the mode II interlaminar fracture toughness increas…

Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineInterlaminar fracture toughness Mode II delamination Compressive stress
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