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用红外热成像系统实时监测了高强度压力容器在工作压力下的疲劳打压过程.在疲劳循环初始由热图获得的IRCE效应,可以确定压力容器的应力集中区域。打压泄漏的位置证明,由热图测定应力集中区域是可行的。实验发现压力容器疲劳软化和硬化效应,采用Glogal座标对筒状薄壁压力容器的应力分布计算表明,热图和计算的结果是吻合的。实验证明,在工作压力下的疲劳锻练效应将会延长压力容器的使用寿命。
The infrared thermography system was used to monitor the fatigue of the high-pressure vessel under working pressure in real time. The IRCE effect obtained from the heat map at the beginning of the fatigue cycle can determine the stress concentration area of the pressure vessel. Suppressing the location of leaks proves that it is feasible to determine the area of stress concentration by thermal mapping. The experimental results show that the stress softening and hardening effect of the pressure vessel, Glogal coordinates of the cylindrical thin-walled pressure vessel stress distribution calculation shows that the heat map and the calculated results are consistent. Experiments show that under the pressure of work fatigue fatigue training effect will extend the life of pressure vessels.