非接触型変位計を用いた小口径配管の振動応力計測方法の開発
Development of Method to Measure Vibrational Stress of Small-Bore Piping with Multiple Contactless Displacement Sensors
著者:
野田 満 Michiyasu NODA 高橋 茂 Shigeru TAKAHASHI
発刊日:
公開日:
Beam TheoryFatigue FailureSmall-Bore PipingVibration TestVibrational Stress
概要
In the nuclear power plant, where many small-bore piping connected to vibrational sources like pumps, it is important to evaluate vibrational stress to keep the plant operating safely. The purpose o f this study is to develop a method to measure vibrational stress efficiently by using multiple contactless displacement sensors. The applicability of the method is verified by vibration tests with a pipe. In the vibration tests, the stress calculated by the proposed method was compared with the stress measured by strain gauges. The calculated stress was in good agreement with the measured str ess though having some errors which are negligible comparing to endurance limit of fatigue failure. Therefore the method we developed is applicable to measure vibrational stress of small-bore piping.
