流れ加速腐食を想定した配管厚さ測定への電磁超音波探触子の適用について
Measurement of Pipe Wall Thickness using EMAT in Flow-Accelerated Corrosion
著者:
小坂 大吾 Daigo KOSAKA 小島 史男 Fumio KOJIMA 梅谷 浩介 Kousuke UMETANI
発刊日:
公開日:
CavitationCondition MonitoringFlow-Accelerated CorrosionNondestructive TestOn-line Monitoring
概要
This paper is concerned with quantitative evaluation of pipe wall thickness Electro Magnetic Acoustic Transducer (EMAT). This pipe wall thinning occurs on a piping internal wide range at an orifice, an elbow, and a reducer downstream. A shape of a pipe wall thinning like Flow-Accelerated Corrosion (FAC) is near arc. And a pipe wall thinning has the s urface like scales. Test samples were fabricated to simulate FAC in the series of experiments. A shape of corrosion of the test samples is arc. Other test samples have a surface like scales. The measurement method is using Electro Magnetic Acoustic Resonance. The transducer and method have characteristics of no contact and high resolution measurement. The pipe wall thinning was able to be measured with pr ecision. The EMAT is able to use to test for the FAC.
