首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.3: Design and Analysis >SPECTRA THERMAL FATIGUE TESTS UNDER FREQUENCY CONTROLLED FLUID TEMPERATURE VARIATION: TRANSIENT TEMPERATURE MEASUREMENT TESTS
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SPECTRA THERMAL FATIGUE TESTS UNDER FREQUENCY CONTROLLED FLUID TEMPERATURE VARIATION: TRANSIENT TEMPERATURE MEASUREMENT TESTS

机译:频率控制的流体温度变化下的光谱热疲劳测试:瞬态温度测量测试

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摘要

The coolant leakage by thermal striping phenomenon should be prevented at nuclear power plants and a lot of efforts are made to develop its evaluation methods. The frequency transfer function method can be used to obtain temperature and stress response to fluid temperature history using transfer function models; therefore it is considered as an excellent evaluation method. To measure temperature response of structures to fluid temperature variations and to confirm their frequency characteristics, transient temperature measurement tests were performed by JAEA. In the transient temperature measurement tests, three different frequencies of sinusoidal fluid temperature waves (0.05, 0.2, 0.5Hz) were controlled using frequency controlled thermal fatigue test equipment (SPECTRA) and temperature responses at inner and outer piping surfaces were measured along the test sections. Frequency effects on temperature attenuation during transfer process from fluid to structures were confirmed and the effective heat transfer function in frequency transfer function method was verified by transient temperature measurement test results.
机译:核电厂应防止因热汽提现象而导致的冷却液泄漏,并已做出很多努力来开发其评估方法。频率传递函数方法可用于通过传递函数模型获得对流体温度历史的温度和应力响应;因此,它被认为是一种极好的评估方法。为了测量结构对流体温度变化的温度响应并确认其频率特性,JAEA进行了瞬态温度测量测试。在瞬态温度测量测试中,使用频率控制的热疲劳测试设备(SPECTRA)控制了三种不同频率的正弦流体温度波(0.05、0.2、0.5Hz),并沿着测试部分测量了内,外管道表面的温度响应。确定了频率对流体从结构到结构的传递过程中温度衰减的影响,并通过瞬态温度测试结果验证了频率传递函数法中有效的传热函数。

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