Sentence examples for rail top from inspiring English sources

According to the vehicle system dynamics, the contact points between the wheels and rail on a tangential track fall in the central area of the rail top surface.

For wheel tread and rail top contact R r goes to infinite, while this is not the case for the wheel-roller contact case.

It was found that there were a number of small rail top defects throughout the site associated with dipped welds, squats and top defects due to fouled ballast.

It is found that the improved profile of LMa with this method is in good conformal contact with rail CHN60, and the distribution of contact points of the wheel and rail is relatively uniform and extensive on the wheel tread and rail top, compared to the LMa in the same case before its optimization.

In this paper, a new approach is suggested using accelerometers mounted on a locomotive's bogie frames (or axle boxes) to estimate the dipped rail defects including squats on rail top surface, rail welds with poor finishing quality, insulated rail joints, etc.

Short-wavelength wheel and rail defects such as wheel flats, squats on the rail top surface, rail welds with poor finishing quality, insulated rail joints, rail corrugations cause large dynamic contact forces at the wheel rail interface, leading to fast deterioration of the track.

Open image in new window Fig. 6 Stress distribution over the contact patch formed by wheel-rail (top), wheel-roller with a radius of 1 m (middle) and wheel-roller with a radius of 0.5 m (bottom) for cases 1 (left column) and 2 (right column).

In the light of this finding, the current transition model was modified to have 810 mm top rail height.

To minimize the risk of neck lesions, the top rail height of post-and-rail barriers should be above 109 cm, especially for cows taller than 126 cm, and the manger front should not be lower than 63 cm.

Their budget calls for $15bn annual investments in energy and efficiency projects, and increased funding for rail – on top of the $8bn for Amtrak in the stimulus – in order to create a "world-class passenger rail system" across the country.

"Safety has to be Network Rail's top priority," he said.