Abstract: Carbon fiber-reinforced polymers (CFRP) are extensively applied in the automotive and aeronautic industry due to several advantages that combine resistance properties with the weight reduction of components. The fiber reinforced thermoset composites are generally manufactured in components close to the final dimensions, and, therefore, need to be machined to
Resumo: Em telecomunicações, cabos, conectores e adaptadores desempenham um papel crucial para o funcionamento eficiente das redes, inclusive em tecnologias sem fio como o 5G. A escolha e o uso adequado do tipo de conexão também são vitais para a integridade dos dispositivos e para a garantia da qualidade do
Abstract: This paper presents the effects of Niobium additions (1, 2 and 3%) on the wear resistance and impact properties of Hadfield steels (1.2%C and 12-18%Mn). The additions of Nb promoted a significant decrease in the mass losses, from 79 mg (Hadfield steel with 12%Mn) to 33 mg (Hadfield steel
Abstract: This article examines the impact of the air-fuel ratio, measured by lambda probe, and the ignition timing on the indicated efficiency of an internal combustion engine using biogas as fuel. Through analysis, it’s seen that the indicated efficiency increases as the air-fuel ratio leans towards a stoichiometric value, and
Abstract: This article examines the effects of charge, engine speed, ignition timing, and air-fuel ratio on the temperature of exhaust gases when using biogas as fuel. The effects of varying engine operating conditions on exhaust gas temperature are analyzed. The article discusses whether increasing engine charge and engine speed leads
Abstract: This article investigates the effects of intake manifold pressure and engine speed on the volumetric efficiency of an internal combustion engine. The study also examines the impact of biogas and different temperatures on volumetric efficiency. Through analysis, it’s verified if the volumetric efficiency of the engine decreases when using
Abstract: The O&G production corrosion challenges are not static phenomena. Fluid characteristics change over time, resulting in systems becoming less predictive for corrosion mitigation programs. Thus, carrying out specific studies aimed at understanding the corrosion mechanisms is constant in this sector, especially for offshore environments. Even though, few studies of
Abstract: Occupational exposure to toxic elements can adversely affect health. The current study evaluated blood concentrations of potentially toxic elements (PTE) including As, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Sb, Sn, and Zn in formal and informal workers. Additionally, the study investigated the associations between blood PTE concentrations and
IPT e Petrobras desenvolveram projeto para realizar estudos de corrosão em atmosferas reais de exposição O crescimento da demanda energética, a prospecção e a exploração de petróleo e o transporte de produtos brutos e derivados (petróleo bruto, nafta, gasolina e diesel, entre outros) têm exigido estudos permanentes com novos materiais
Resumo: A tecnologia LoRa – Long Range permite a comunicação sem fio de dados a longas distâncias com baixo consumo de energia, alcançando até 15 quilômetros em condições ideais, e variando de 3 km a 4 km em áreas urbanas e até 12 km em áreas rurais. Ideal para aplicações
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