Automotive tire tread depth has a major influence on car's safety and thus to be closely monitored. However, there is currently no on-board solution that can measure wear with an accuracy of less than 1 mm. TireEye optical device mounted inside the wheel well facing towards road. It records cross-section longitudinal groove extracts its outline by means adaptive Canny edge detection. The indica...

Ultra-high molecular weight polyethylene wear particles have been implicated as the major cause of osteolysis, implant loosening and late aseptic failure in total hip arthroplasties in vivo. This study initially screened 22 carbon-carbon composite materials as alternatives for UHMWPE in joint bearings. New bearing materials should satisfy certain criteria--they should have good wear properties ...

In this study electrical discharge process was used to increase surface wear resistance of pure aluminum. Pulse-on-time and pulse current were considered as input parameters of the electrical discharge process. Experimental results reveal that the electrical discharge process is a successful method for improving the surface wear resistance of aluminum, so that this method has greatly increased ...

Friction stir processing was applied for fabricating an aluminum alloy based hybrid nano composite reinforced with nano sized Al2O3 and micro sized graphite particles. A mixture of Al2O3 and graphite particles was packed into a groove with 1 mm width and 4.5 mm depth, which had been cut in 5083 aluminum plate of 10 mm thick. Packed groove was subjected to friction stir processing in order to im...

In this research, surface composite layers containing nano sized TiB2, Al2O3-TiB2, ZrO2 and CNT particles have been fabricated on Aluminum alloy substrates by friction stir processing. The effects of different processing variables such as number of passes and strengthening particle distribution, hardness, and wear properties of surface nano...

In general, machine military technique part wear does not depend only on the friction characteristics (rolling or sliding friction), but it is a complex physicalchemical process that occurs on sliding surfaces of the tribological units. An external, undesirable product of the friction system activity is a very wide spectrum of wear particles. With respect to diagnostics it is important that the...

The production and disposal of plastics have become significant concerns for the sustainability planet. During past 75 years, around 80% plastic waste has either ended up in landfills or been released into environment. Plastic debris environment breaks down smaller particles through fragmentation, weathering, other disintegration processes, generating microplastics (plastic ≤ 5 mm size). Althou...

The influence of emissions an active volcano on the composition nanoparticles and ultrafine road dust was identified in urban area Andes. Although many cities are close to volcanoes, few studies have evaluated their composition. Air quality areas is significantly affected by non-exhaust (e.g. dust, brake wear, tire wear), however, natural sources such as volcanoes also impact chemical particles...

One of the main challenges in maximizing vehicle performance is to predict and optimize tire behavior different working conditions, such as temperature, friction, wear. Starting from several approaches develop grip wear models, based on physical principles, experimental data, or statistical methods available literature, this work aims propose a novel model that combines analysis large number hi...