Development of Random Loading Test by Parallel Micro-Processor

近年来，船舶、飞机等大型结构和核电站等系统复杂的结构，由于金属疲劳造成的严重事故屡屡发生。它们所受载荷一般为随机载荷，为防止事故发生，随机疲劳试验具有重要意义。当载荷分布可以用窄频带平稳高斯随机过程近似时，随机疲劳试验很容易在个人计算机上进行。在本研究中，我们编写了随机疲劳测试程序，通过FFT模拟窄带随机过程的包络。

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.