Multispectral images of Mercury obtained by the MESSENGER spacecraft reveal that its surface has an overall relatively low reflectance with three large-scale units identified on the basis of reflectance and slope (0.4 to 1.0 micrometer). A higher-reflectance, relatively red material occurs as a distinct class of smooth plains that were likely emplaced volcanically; a lower-reflectance material ...

Wheel contour extraction from image is an important unit of any vision-based traffic accident analysis system, and automatically doing it is still a difficult task due to various distracting factors such as low contrast between the wheel and the ground, different wheel types and various weather conditions etc. In this work, a new automatic wheel extraction method is proposed, in which rather th...

Wheel out-of-roundness (OOR) inevitably jeopardizes the safety of railway operations. Regular visual inspection and checking by experienced workers are the commonly adopted practices to identify wheel defects. However, the defects may not be spotted in time. The paper puts forward a new method to real-time monitor wheel OOR based on PVDF strain sensor. Track strain response upon wheel-rail inte...

rotary atomizers are commonly used in spray dryers to atomize feed. one destructive effect of wheel rotation is the creation of a vacuum inside the wheel that conducts hot air from the chamber into the wheel and can lead to atomizer blockage and an explosion. the present work determined the air-pumping characteristics of a rotary atomizer with a 50 mm wheel diameter. the vacuum pressure and pow...

A new type of holonomic omnidirectionul vehicle which consists of wheel mechanisms without free rollers but with conventional tires is presented. We first present a concept of the new driving wheel mechanism with a tire in the conventional style such QS a rubber tire or a pneumatic tire,"Offset Steered Driving Wheel". The configuration of the wheel has an offset distance between a wheel axle an...

The swing grinding method is an excellent choice for the manufacturing of large-width cam to avoid defects and form splendid surface quality. Since influence parameters on machining quality has not been clearly clarified, experimental study was conducted in paper. orthogonal experiment designed, based which, residual stress, roughness, hardness were analyzed through combination quantitative qua...

Abstract The analysis on influence factors of wheel dicing saw machine to cutting quality is presented through orthogonal cross-cutting test. effects parameters such as the speed spindle, velocity depth tool diameter are analysed. results analysed methods range analysis, variance factor - index relationship trend chart analysis. main for width and maximum cross gained. Based method robustness d...

In this paper, a transient temperature calculation model for simulating grinding face gear with worm is proposed. Firstly, according to the principle of differential geometry, equations determining contact length and width instantaneous area between wheel are deduced. Based on method single abrasive particle cutting force heat, mathematical heat established, theoretical formula maximum teeth ob...

The purpose in this research, the performance of undershot waterwheel with hydraulic channel modifications were investigated. Testing was carried out on diameter 0,48 m, width 0,10 m and number blades 12. Weir 0,24 length headrace 0,1 under flow rate 0,105 m3/s variations sluice openings 0,06 to 0,12 guide 30° determine torque, power efficiency wheel. larger opening, torsional tendency, increas...