Studies in polymer composites reinforced with vegetable fiber show that they are enough sensitive to influences from environmental agents such as water and temperature. The moisture causes degradation of the mechanical ...

The aim of this study is to evaluate and analyse the composing form and the perception concerning the use and application of project methodologies for the development of industrial products and systems at UFCG (Federal ...

The internal combustion engines are a major cause of rising levels of pollution of the planet, thus facing such situation and where life without energy generation would become complicated, the demand for alternative ...

This work was developed experimentally in order to examine the performance of emissions, power and consumption of the diesel engine, operating in "dual mode" with diesel and natural gas at a fixed rate of replacement of ...

The aim of this work is to evaluate the Thermography ability to monitor the behavior of the lubricating oils SAE 20W50 API SJ and ISO VG 10 from the thermal point of view until the moment of the lubricating film rupture, ...

Mechanical vibrations are important phenomena of the physical world. Generally, such oscillations may become undesirable in such a way as to cause temporary damage or the actual collapse of mechanical and structural systems. ...

This paper aims at presenting a study about the vehicular suspension vibratory dynamic behavior of a "minibaja" the one that has been deigned transit in any land and weather conditions. As for the analyses, two mathematical ...

The shortage of energy sources and environmental impact are crucial for the existence of new studies of the conversion and use of energy and reduce the levels of pollutants in the atmosphere. When it comes to diesel, the ...

The agricultural wheel tractor is a source of power used to quite a larse extent in smsll and intermediate agricultural industries from soil tillage to harvest and transportation operations, performing these operations ...

Brazil has established as one of the main automobilistic consumer markets of the world with a internal production lager than 3 million vehicles per year. The fuels in the automotive sector are traditionally derived from ...