VIBRATION TESTING CONTROL USING SPECTRAL WARPING

Testing is one of the most important steps in creating reliable and durable prototypes of high-performance machinery. It is also crucially important in the operational development of finished production prototypes. The objectives of testing are. to provide for complete simulation of all possible stresses on a product in service and to analyse the product's behaviour and performance under service conditions. Essentially the stress factors are linear and angular acceleration, impacts, vibration, acoustic environment and climate. Testing for robustness and reliability under vibration is gaining in importance for engineering systems such as aircraft, motor-vehicles, power generating equipment, automatic systems, computers, radio, electronic and data-conditioning equipment and so on. The background to this is that approximately 70 % of all in-service failures in the engineerin