Development of Random Loading Test by Parallel Micro-Processor

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Structures of large size as ships, airplanes and with ocmplicated system as nuclear power plant have been built recently, it has been frequent that they cause a terrible accidents by metal fatigue. Load they have been given is generally random load, to prevent accidents, random fatigue test takes on importance.When a load profile can be approximated by a narrow band stationary Gaussian random process, it has been pointed out that random fatigue tests are easiliy done with a personal computer. In this study, we wrote random fatigue test program by simulating the the envelope of the narrow band random process by FFT for personal computer.