Lorena Cristina Miranda Barbosa
Universidade Federal de Itajubá
Composite numberGlass transitionPolymer scienceSoftening pointThermal analysisTest methodCuring (chemistry)Isothermal processDielectricMatrix (mathematics)Acrylic resinCurrent (fluid)Heating elementComposite materialEpoxyThermosetting polymerGlass fiberViscoelasticityRheometryShear strengthMaterials scienceWeldingAdvanced composite materialsRheologyScanning electron microscopeSuperposition principleShear strength testStiffnessPlain weaveCharacterization (materials science)ThermoplasticMoisture absorptionLiquid resinCarbon fiber compositeThermoplastic matrixInterlaminar shearDifferential scanning calorimetryFracture (geology)PolymerizationElectric resistance weldingFractographyPolymerAmorphous solidFracture mechanicsVolume fractionDelaminationShear (sheet metal)Electrical resistance and conductanceShear (geology)Fracture toughness
12Publications
6H-index
76Citations
Publications 12
Newest
One of the main current challenges in the development of materials is related to meet the structural industry demanding requirements and that are sustainable at the same time. This paper presents t...
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#1Olívia de Andrade Raponi (UNIFEI: Universidade Federal de Itajubá)H-Index: 5
#2Lorena Cristina Miranda Barbosa (UNIFEI: Universidade Federal de Itajubá)H-Index: 6
Last. Alessandro GuimarãesH-Index: 1
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One of the major concerns when using prepreg materials for advanced composite manufacturing is the cure advancement. Although this type of prepreg curing is usually programmed to occur at high temperatures, the exposition to environmental conditions during processing, intrinsic to the industrial production, leads to the cure advancement and, consequently, to the detriment of prepreg’s processability. Therefore, techniques that provide accurate, relatively low-cost, and fast alternatives for trac...
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A considerable interest has been generated in recent years in the use of thermoplastic polymers as matrices in the manufacture of advanced composites that require high reliability during long-term operations. In this research, a new Elium® acrylic matrix developed by Arkema was studied to evaluate the accelerated test methodology based on time-temperature superposition principle of Carbon Fiber/Elium® 150 composites. The results show that the high frequencies increase the glass transition (Tg) t...
7 CitationsSource
4 CitationsSource
#1Lorena Cristina Miranda Barbosa (UNIFEI: Universidade Federal de Itajubá)H-Index: 6
#2Daniel Brighenti Bortoluzzi (UNIFEI: Universidade Federal de Itajubá)H-Index: 2
Last. Antonio Carlos Ancelotti (UNIFEI: Universidade Federal de Itajubá)H-Index: 12
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Abstract One of the major challenges of composite materials is to increase their properties related to interlaminar fracture toughness and consequently delamination. This work shows a composite system based on a new thermoplastic Elium® 150 resin developed to be a competitive solution for the composites traditionally based on epoxy resins. Both composites were fabricated via VARTM using a 0/90° plain weave carbon fiber fabric. The thermoplastic composites presented 40% more resistance to interla...
16 CitationsSource
#1Lorena Cristina Miranda Barbosa (UNIFESP: Federal University of São Paulo)H-Index: 6
#2Samia Danuta Brejão de Souza (UNESP: Sao Paulo State University)H-Index: 4
Last. Mirabel Cerqueira Rezende (UNIFESP: Federal University of São Paulo)H-Index: 34
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Abstract Joints obtained by resistance welding of polyphenylene sulphide (PPS) laminates reinforced with bidirectional glass fiber (GF) fabrics were investigated by fractographic analyses. The welded joints were tested under lap shear loading at room temperature. The fracture surfaces were analyzed by scanning electron microscopy (SEM) technique. Electric resistance welding technique uses the matrix flow property, when the thermoplastic is heated above the softening temperature (for amorphous po...
13 CitationsSource
#1Olívia de Andrade Raponi (UNIFEI: Universidade Federal de Itajubá)H-Index: 5
#2Lorena Cristina Miranda Barbosa (UNIFEI: Universidade Federal de Itajubá)H-Index: 6
Last. Antonio Carlos Ancelotti Junior (UNIFEI: Universidade Federal de Itajubá)H-Index: 7
view all 4 authors...
6 CitationsSource
#1Lorena Cristina Miranda Barbosa (UNIFESP: Federal University of São Paulo)H-Index: 6
#2Samia Danuta Brejão de Souza (UNESP: Sao Paulo State University)H-Index: 4
Last. Mirabel Cerqueira Rezende (UNIFESP: Federal University of São Paulo)H-Index: 34
view all 5 authors...
Abstract This work shows a fractographic study on fracture surfaces of welded joints by electrical resistance of thermoplastic composites based on polyphenylene sulfide (PPS) reinforced with continuous carbon fiber (CF), evaluated after lap shear loading. The fracture surfaces were generated with the complete breakdown of the specimens under the same conditions used in the mechanical test. The fractographic aspects of fracture surfaces were analyzed by scanning electron microscopy (SEM). SEM ana...
12 CitationsSource
#1Olívia de Andrade Raponi (UNIFEI: Universidade Federal de Itajubá)H-Index: 5
#2Bárbara Righetti de Souza (UNIFEI: Universidade Federal de Itajubá)H-Index: 3
Last. Antonio Carlos Ancelotti Junior (UNIFEI: Universidade Federal de Itajubá)H-Index: 7
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Abstract The use of thermoplastics in advanced composites has increased in recent years due to their recyclability and rapid processing. It is thus important to establish an appropriate thermal cycle processing method in order to achieve parts with high mechanical performance. Elium® thermoplastic resins from Arkema constitute an innovation in the composites processing field for their ability to adapt to thermoset infusion processing methods already in use. Some studies on these new resins can a...
8 CitationsSource