As the rotation speed of the rolling test increases, the hardness increments, and the thickness of layers exhibiting a steep hardness gradient are seen to increase.
The effect of the rotational speed on the diagnostics of rolling element bearing defects is investigated.
For flat steel products, speed at the end of rolling, where the inspection equipment has to operate, is typically 20 m/s.
The effects of rolling speed, reduction ratio, material parameter and slip on minimum film thicknesses (isothermal and thermal) and maximum film temperature rise (in the inlet zone only) are rigorously investigated.
The "speed, weight, and positioning of rolling stock on the bridge" was monitored, and it was repeatedly reinforced to "carry the ever heavier loads of modern railroading".
The cubic and tonnage capacity per train, together with higher average speed (may mean lower requirement of rolling stock for a certain amount of transport needs) drive both efficiency and higher capacity utilisation, since high fixed capital or 'personnel' costs per train contribute significantly to reducing the operational cost of a service.
Oftel's ultimatum came the same day BT admitted to falling behind in its schedule of rolling out high-speed internet access to consumers.
The French government has estimated the cost of rolling out high-speed fiber-optic networks to 50 percent of the country's territory at €25 billion, or about $33 billion, over 15 years.
So the main aim of this paper is to attain the optimum set points of rolling to achieve maximum rolling speed, preventing chatter to occur.
For passenger rail the first priority is a large order of rolling stock to meet growing demand, said Rick Harnish of the Midwest High Speed Rail Association.
