SQUIDセンサによる材料の損傷検出

概要

論文の詳細を見る
SQUID (Superconducting Quantum Interference Device) is a highly sensitive magnetic sensor. An apparatus using a SQUID sensor was developed for nondestructive inspection. These measurements were obtained with the SQUID sensor located approximately 150 mm from the specimen. The degradation of thermal aging and plastic strain for duplex stainless steels were successfully detected independently from the magnetic characterization measurements. The magnetic flux density under a high field was found to be independent of thermal aging. Residual magnetization and coercive force increased with thermal aging time. On the other hand, the magnetic flux density under a high field increased with the plastic strain. Residual magnetization and coercive force were found to be independent of the plastic strain.
社団法人日本機械学会の論文
1991-08-25