非破壊検査 : journal of N.D.I 58(4) 159-164 2009年4月 [査読有り]
The establishment of non-destructive inspection technology for plant structures is necessary, since the occurrence of cracks has been reported in some nuclear power plants. In this research, a uniform eddy current multi-probe to inspect cracks on ...
非破壊検査 : journal of N.D.I 58(3) 102-107 2009年3月 [査読有り]
In magnetic-particle testing, the maximum leakage flux from a flaw is obtained when the direction of the magnetic flux is normal to the longitudinal direction of the flaw. Since we usually cannot predict the direction of the flaw to be detected, i...
Physica C: Superconductivity and its Applications 468(15-20) 1485-1489 2008年9月 [査読有り]
Some bulk high temperature superconductors (HTSs) are inhomogeneous due to weak links. Thus, we have measured distributions of the magnetic flux density on the HTSs surface using a Hall element, and evaluated its magnetic characteristics with a ma...
日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan 7(2) 142-151 2008年6月 [査読有り]
The objectives of this study are to develop a new inspection probe for complex structures using eddy current testing method (ECT), to establish the recognition technique of real flaw shape such as stress corrosion cracking (SCC), and t...
Physica C: Superconductivity and its Applications 445-448(1-2) 387-390 2006年10月 [査読有り]
In a transformer using a ferromagnetic core, the magnetic flux comes to leak easily from the core at the higher frequency range. Thus, we have examined the magnetic shielding of a magnetic circuit of the transformer with plural bulk high temperatu...