In addition to the requirement on the assembly above, the demonstration of conformity of mechanical resistance and fatigue characteristics of the axle shall be based on clauses 4, 5 and 6 of EN 13103:2009+A1:2010.

The axle box and the rolling bearing shall be designed with consideration of mechanical resistance and fatigue characteristics.

Other key features include a fully marinized structure and engines for continuous corrosion resistant operations in a maritime environment; extensive use of composites to increase resistance to corrosion fatigue; state-of-the-art crash-worthiness features in the areas of structural design, load attenuation, passenger safety, payload retention, fire suppression, and emergency escape; triple redundant digital fly-by-wire flight controls and hydraulic systems; Rolls-Royce AE 1107C engines, which share the same engine core as found on the CC-130J; modern avionics with glass cockpit displays; a number of radar options to include weather ...[+++], maritime search, or terrain-following and terrain avoidance; an ice protection system, which includes both anti-ice and de-ice capabilities certified into known moderate icing—and most of our testing of that system was actually performed in Shearwater; and an open passenger and cargo cabin with roller rails, winch, hoist, and a rear loading ramp to provide the SAR techs with the clearance required to safely perform all necessary ground and airborne tasks. The V-22 program is in full production.

Fatigue strength of wheelsets and bogies

The durability of the materials used must be adequate for the nature of the working environment foreseen by the manufacturer or his authorised representative, in particular as regards the phenomena of fatigue, ageing, corrosion and abrasion.

Their aim is mainly to acquire a better knowledge and improve the structural stability, and resistence to corrosion, heat and fatigue of such materials.