Development of an inspection system for surface corrosion of pipes covered with heat insulators by ac impedance method using rotating magnetic field

Research Project

Project/Area Number	20760265
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Measurement engineering
Research Institution	Yamaguchi University
Principal Investigator	KINOSHITA Katsuyuki Yamaguchi University, 大学院・理工学研究科, 講師 (80325240)
Project Period (FY)	2008 – 2009
Project Status	Completed (Fiscal Year 2009)
Budget Amount *help	¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000) Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords	非破壊検査 / 磁気インピーダンス / 保温材付配管 / 表面腐食 / 外面腐食検査
Research Abstract	In this study, a pipe inspection system using electromagnetic phenomenon for surface corrosion of pipes covered with heat insulators is developed. An electromagnet to produce a rotating magnetic field was created for the pipe inspection system ; it was confirmed to have an enough performance. To improve inspection accuracy of the surface corrosion of pipes, measurement conditions of impedance at the frequency were examined ; the specific frequencies to improve inspection accuracy were found.

Report

(3 results)