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Now showing items 81-90 of 270
Calibração do modelo de Drucker-Prager/CAP para simulação numérica do processo de prensagem a frio de pós metálicos
(Universidade Federal de São Carlos, 2015-03-27)
An experimental procedure for the calibration of Drucker-Prager/Cap model, using
the digital image correlation technique, is presented. The elastic properties were
characterized by fitting stress vs. strain curves recorded ...
Caracterização da interface de tubo bimetálico cladeado fundido por centrifugação
(Universidade Federal de São Carlos, 2015-03-27)
Bimetallic pipes represent a solution for cost reduction to pipelines in the oil and
gas industry, because they combine two materials with distinct characteristics in
the pipe manufacturing: a HSLA steel, constituting ...
Efeitos de degradação e de alterações microestruturais do polímero no desempenho mecânico estático de juntas híbridas de polieterimida (PEI) e alumínio produzidas por F-ICJ
(Universidade Federal de São Carlos, 2016-02-29)
This master thesis aims to study hybrid joints of polyetherimide (PEI) and aluminum 6082-T6 produced by Friction-based Injection Clinching Joining (FICJ). The influences of the process parameters in the frictional heat and ...
Desenvolvimento de nanocompósitos poliamida 11 / dióxido de titânio para aplicação na indústria petrolífera
(Universidade Federal de São Carlos, 2015-08-31)
The depth at which explores offshore oil grew abruptly, forcing the
advancement of technology in relation to the knowledge acquired so far. For the
risers operating conditions, subject to internal relatively low pressures, ...
Influência do tratamento superficial da nanocarga nas propriedades mecânicas de curta e longa duração de um nanocompósito de PEEK/nHA
(Universidade Federal de São Carlos, 2014-09-15)
In this dissertation the mechanical properties of short and long term of
PEEK/nHA nanocomposites with potential application as orthopedic implants
were studied. The nanohydroxyapatite (nHA) was surface-treated with ...
Avaliações e correlações das propriedades reológicas, mecânicas e de cinética de cristalização de polímeros utilizados em processo de impressão 3d por FFF
(Universidade Federal de São Carlos, 2018-09-03)
Recently there has been an interest increase in the additive manufacturing process (AM), Fused Filament Fabrication (FFF) is one of the most commercially important extrusion-based process. The success of this technology ...
Compatibilização química em compósitos de PLA reforçados com fibras de sisal
(Universidade Federal de São Carlos, 2018-07-13)
Even though poly(lactic acid) (PLA) is fragile under impact and has low toughness, the polymer stands out for its stiffness and high tensile strength. This polymer is an interesting material not only for short-term ...
Blendas de poli(tereftalato de etileno) e poliamida 66 modificadas com sepiolita
(Universidade Federal de São Carlos, 2018-03-02)
Blends of recycled bottle-grade polyethylene terephthalate and virgin polyamide
66 (PET/PA66) with different compositions (75/25, 50/50, 25/75) unfilled and filled
with 5 phr of sepiolite clay (Sep) were investigated. ...
Nanocompósitos de poliuretano comercial e nanopartículas híbridas de núcleo Fe3O4 funcionalizado com capa orgânica de Poli(1,4-Butanodiol)
(Universidade Federal de São Carlos, 2018-02-23)
The use of inorganic nanoparticles in polymer nanocomposites allows gain in mechanical resistance and new properties. However, the incorporation of organic layer functionalized nanoparticles alters the material’s properties ...
Desenvolvimento de Nanoblendas PLA/EVOH biodegradáveis com características de barreira a gases e vapores
(Universidade Federal de São Carlos, 2018-07-20)
Poly (lactic acid) (PLA) is a non-toxic, transparent and biodegradable aliphatic polyester, produced from renewable raw materials. This polymer meets several requirements for packaging applications, but is fragile and has ...