Spelling suggestions: "subject:"enhanced CFRP composites"" "subject:"inhanced CFRP composites""
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Interfacial Toughening Of Carbon Fiber Reinforced Polymer (CFRP) Matrix Composites Using MWCNTs/Epoxy Nanofiber ScaffoldsWable, Vidya Balu 05 1900 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / This study represents a cost-effective method to advance the physical and mechanical properties of carbon fiber-reinforced polymer (CFRP) prepreg composite materials,
where electrospun multiwalled carbon nanotubes (CNTs)/epoxy nanofibers fabricated and deposited in between the layers of traditional CFRP prepreg composite. CNT-aligned epoxy nanofibers were uniformly formed by an optimized electrospinning method. Electrospinning is considered one of the most flexible, low-cost, and globally recognized methods for generating continuous filaments from submicron to tens of nanometer diameter. Nanofilaments were incorporated precisely on the layers of prepreg to accomplish increased adhesion and interfacial bonding, leading to increased strength and enhancements in more mechanical properties. As a result, the modulus of the epoxy and CNT/epoxy nanofibers were revealed to be 3.24 GPa and 4.84 GPa, leading to 49% enhancement. Furthermore, interlaminar shear strength (ILSS) and fatigue performance at high-stress regimes improved by 29% and 27%, respectively. Barely visible impact damage (BVID) energy improved considerably by up to 45%. The thermal and electrical conductivities were also increased considerably because of the highly conductive CNT networks present in between the CFRP layers. The newly introduced approach was able to deposit high content uniform CNTs at the ply interface of prepregs to enhance the CFRP properties, that has not been achieved in the past because of the randomly oriented high viscosity CNTs in epoxy resins.
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INTERFACIAL TOUGHENING OF CARBON FIBER REINFORCED POLYMER (CFRP) MATRIX COMPOSITES USING MWCNTS/EPOXY NANOFIBER SCAFFOLDSVidya Balu Wable (10716303) 10 May 2021 (has links)
This study represents a cost-effective method to advance the physical and mechanical properties of carbon fiber-reinforced polymer (CFRP) prepreg composite materials,
where electrospun multiwalled carbon nanotubes (CNTs)/epoxy nanofibers fabricated and
deposited in between the layers of traditional CFRP prepreg composite. CNT-aligned epoxy
nanofibers were uniformly formed by an optimized electrospinning method. Electrospinning
is considered one of the most flexible, low-cost, and globally recognized methods for generating continuous filaments from submicron to tens of nanometer diameter. Nanofilaments
were incorporated precisely on the layers of prepreg to accomplish increased adhesion and
interfacial bonding, leading to increased strength and enhancements in more mechanical
properties. As a result, the modulus of the epoxy and CNT/epoxy nanofibers were revealed
to be 3.24 GPa and 4.84 GPa, leading to 49% enhancement. Furthermore, interlaminar shear
strength (ILSS) and fatigue performance at high-stress regimes improved by 29% and 27%,
respectively. Barely visible impact damage (BVID) energy improved considerably by up to
45%. The thermal and electrical conductivities were also increased considerably because
of the highly conductive CNT networks present in between the CFRP layers. The newly
introduced approach was able to deposit high content uniform CNTs at the ply interface of
prepregs to enhance the CFRP properties, that has not been achieved in the past because
of the randomly oriented high viscosity CNTs in epoxy resins.
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