Volvo is able to test truck components in a shorter time with this test rig.
All truck manufacturers strive for increased payloads for their customers. They do this by developing weight saving components on the truck. However, lighter components must be just as strong as the components that they replace. To determine whether they are as strong, tests need to be carried out. Testing axles and suspension systems on the road can take five to ten years, but using a test track can reduce this to between six and 12 months. Using the test rig can reduce this to only two months. Volvo’s test rig is able to test axles and suspension systems to analyse their strength and durability. All new weight optimising designs and materials are tested according to the stresses they would encounter in reality. The trucks are able to simulate the actual conditions that the customers would encounter, for example potholes, corrugations (wash boarding), sharp bends and acceleration and braking sequences. The shorter test duration results in new features and products being released sooner, thereby meeting customer needs. The system also allows for adaptation to changing legislative requirements, where required. Lastly, rejections of new technologies can take place before large testing expenses are incurred.
The test rig consists of four identical sections, which can be pushed together if necessary. It is 14 x 8 metres (46 x 26 foot) and 4.5 metres (15 foot) high. It weighs 220 tonnes and rests on concrete foundation of 980 tonnes, which rests on 36 air filled rubber cushions. Its hydraulic system has 12 pumps with a combined effect of 2,000 kW (2,700 hp) and a flow capacity of 4,900 l/min (1300 gallons/min), with up to 210 bar of pressure. It can handle bogie axles of up to 32 tonnes. Dual front and rear axles can be tested, which makes the Volvo facility unique.
Source: http://newsandmedia.volvotrucks.com
and http://magazine.volvotrucks.com/global/Articles/International/2010/3_10/RnD/Article/