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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.3: Design and Analysis; 20050717-21; Denver,CO(US) >INTHERPOL THERMAL FATIGUE TEST
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INTHERPOL THERMAL FATIGUE TEST

机译：国际热疲劳试验

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摘要

The INTHERPOL testing facility, developed at EDF R&D tit designed in order to perform pure thermal fatigue test on tubular specimen under mono-frequential thermal load. INTHERPOL specimens consist of a 300 mm length and 400 mm diameter pipe comprising a circumferential welding located at a distance of 200 mm from the bottom of the specimen. According to the test considered, the models can have various types of industrial surface finish and various configurations of welded joints. Thermal cycling is carried out on a 70 mm broad sector of the internal surface of the specimen. The cold shock is generated by the pulverization of a cold-water spray while the hot shock is obtained by submitting the cooled surface to an intense infrared radiation. Four tests have been carried out with a thermal amplitude of 120 to 140℃ and a cycle's duration ranging of 5 to 8 seconds on mock-up including several surface finish. Each fatigue test is stopped periodically in order to detect the initiation and the evolution of the cracks by intermediate die penetrant inspections. During the test, the temperature is measured by using thermocouples. The recorded temperatures are used as input data to perform finite element simulations in order to obtain the stress and strain fields necessary to interpret experimental results.
机译：由EDF研发部门开发的INTHERPOL测试设备旨在在单频率热载荷下对管状样品进行纯热疲劳测试。 INTHERPOL样品由300毫米长和400毫米直径的管组成，该管包括距离样品底部200毫米的圆周焊缝。根据考虑的测试，模型可以具有各种类型的工业表面光洁度和各种焊接接头配置。在样品内表面的70 mm宽扇区上进行热循环。冷冲击是通过将冷水喷雾粉碎而产生的，而热冲击是通过使冷却后的表面受到强烈的红外线辐射而获得的。进行了四次测试，热幅值为120到140℃，模拟的循环持续时间为5到8秒，包括几个表面光洁度。定期停止每个疲劳测试，以便通过中间的模具渗透检查来检测裂纹的产生和发展。在测试过程中，使用热电偶测量温度。记录的温度用作执行有限元模拟的输入数据，以获得解释实验结果所需的应力和应变场。

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