โ Scribed by Do-Hyun Jung; Alisher Gafurov
No coin nor oath required. For personal study only.
In this paper vibration-fatigue evaluation method is discussed. Fatigue is the most commonly encountered type of failure for metallic structures operating under dynamic loading. Fatigue failure cannot be stopped from occurring but it is possible to avoid it by proper studies. Driving system parts are subjected to continuous random vibration. Vibration induced stress can reach critical maximums and cause destructive failure. In order to ensure that a test unit functions for a specified life without failure, a careful signal measurement and analysis tools have been implemented and are explained through a case study. The approach described here involves Fatigue Damage Spectrum, Shock Response Spectrum, Extreme Response Spectrum and generation of random vibration test specification. This specification can be accelerated to achieve fatigue test results in very short time. Accelerated life tests are quick tools to properly evaluate the expected lifetime. It is reliable and can help to save considerable time.
๐ SIMILAR VOLUMES
The entries are drawn from over 500 British and International publications. Each issue concentrates on one or two subject areas. The subjects covered in previous issues from February 1993 onwards are: Acoustic and ultrasonic measurement of elastic constants -27(1); Acoustic emission testing of pres