Parallel to physical tests, computer simulations can be performed for a variety of test and product configurations. Using information and crash test patterns developed through years of research and development, computer simulation can be an economical and time efficient alternative to physical testing.Component TestingComponent testing, like computer simulation, is a cost effective and efficient way of testing a variety of specific design proposals and materials. The Autoliv test centers offer several smaller scale strength test machines ideal for the testing of specific component parts such as seatbelt webbing, load brackets, airbag fabrics, and metal or plastic parts.
Product TestingAfter computer simulation and component testing, the performance of a complete restraint product can be tested in the seatbelt or airbag laboratories. Seatbelt systems are dynamically tested in car-like setups while airbag systems are deployment tested under various temperature with or without dynamic loading on the bag. Computer simulation models are then validated based on the product testing results.
Sub-System Sled TestingAfter product performance is verified, restraint system verification takes place. Instead of destroying a complete car in a crash test, the stripped vehicle body is reinforced and placed on a sled. The recorded crash pulse for the simulated car can be accurately repeated, by braking the sled with a combination of energy absorbing iron bars or by accelerating the vehicle. By replacing the destroyed interior materials, the reinforced vehicle body can be repeatedly used for a number of car-like crashes with a limited cost and time impact.
Vehicle Crash TestingAfter tuning the restraint systems during sled test, system performance is verified in a vehicle crash test. The impacts can be performed up to a velocity of 80 km/h, with tow masses up to 3.5 tons. A number of different test types can be performed depending on the specific requirements of the car manufacturer or governmental regulations. These include: Flat barrier impact
Angled barrier impact
Offset barrier impact
Pole barrier front or side impact
Under ride barrier impact
Mobile barrier, side or rear impact
Car to car, side or rear impact
Sled and vehicle tests are supervised from a control room using a fully computerised crash control system - the nerve center of the entire operation. Sensors, instrumentation, cameras, towing, acceleration, velocity, test input data and any other relevant factors, can be set and monitored from the crash control system. The facility's door locks, lights and alarm signals can be manipulated, and the control system is able to abort a vehicle test instantaneously in the unlikely event that any element in the testing mix is not perfectly operating. Clients can view the crash testing from a well equipped observation room.