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Desenvolvimento de compósito epóxi/fibra de vidro produzido por enrolamento filamentar para revestimento interno de coluna de produção de petróleo em aço carbono na exploração offshore
(Universidade Federal de São Carlos, 2021-08-04)
Epoxy/glass fiber composites (GRE) were produced by filament winding with a view to application as a liner in a carbon steel tube to replace all-metal super duplex stainless steel column in offshore petroleum exploration. ...
Reaproveitamento de resíduos da agroindústria da laranja para a produção de compostos biodegradáveis em matriz de PBS
(Universidade Federal de São Carlos, 2021-09-24)
The employment of biodegradable polymers is a partial solution to the problem of environmental plastic pollution, since conventional polymers are resistant to many environmental influences and it may take centuries for ...
Descrição termodinâmica via CALPHAD do líquido super-resfriado no Sistema Mo-Nb-B com o modelo de 2-Estados
(Universidade Federal de São Carlos, 2021-08-12)
In the present work, we will use the Thermo-CalcTM software to model
with the CALPHAD method the super-cooled liquid (SCL) that leads to the
formation of metallic vitreous materials. This research aims to improve ...
Weldability of AA5083-O/H111 and naval GL D36 steel lap joints by friction stir welding
(Universidade Federal de São Carlos, 2021-01-25)
Steel structures welded with aluminum alloys, which combine the low cost and high mechanical strength of steel with the weight reduction and the excellent specific properties of the aluminum alloys, are in great demand. ...
Relaxação estrutural de vidros metassilicato de chumbo e dissilicato de lítio
(Universidade Federal de São Carlos, 2021-02-25)
Glasses are thermodynamically unstable and spontaneously relax towards the supercooled liquid state. The relaxation time varies from seconds at temperatures above the glass transition to geological times at room temperature. ...
Equilíbrio de fases e propriedades mecânicas da liga de elemento multiprincipal Cr40Co40Ni20
(Universidade Federal de São Carlos, 2021-02-19)
In the pursuit for materials with improved performance, multi-principal element alloys (MPEAs) attract the interest of the scientific community, due to their large composition space. Some Cr-Co-Ni alloys stand out with ...
Avaliação dos modelos numéricos para a simulação da secagem de concretos refratários
(Universidade Federal de São Carlos, 2021-02-25)
The drying of hydraulic bonded monolithic refractories is the slowest stage of their application process. Problems related to the control of such a procedure result in cracks, spalling and even, in extreme cases, explosions ...
Produção por fusão seletiva a laser de revestimentos resistentes ao desgaste utilizando a liga Fe68Cr8Mo4Nb4B16
(Universidade Federal de São Carlos, 2021-06-29)
Amorphous/crystalline Fe-based alloys are promising materials as protective coatings due to their high crystallization temperatures, high hardness and excellent resistance against corrosion and wear. The application of ...
Análise de falha de martelos oscilantes de desfibradores utilizados em usinas sucroalcooleiras
(Universidade Federal de São Carlos, 2021-07-30)
Sugarcane mills have demanded more control of their production line,
reduced loss of raw material, and a longer period before maintenance of their
equipment, aiming to increase their profitability. The main station of ...
Síntese de Mg2NiH4 para armazenagem de hidrogênio em compósito polimérico
(Universidade Federal de São Carlos, 2021-03-01)
In this work, powder production routes based on Mg2NiH4 are investigated, utilizing high-energy reactive milling; thermal treatment procedures, and hydrogen absorption/desorption cycles, which promote controlled decrepitation, ...