Non-destructive Method of Stress Evaluation in Linepipes Using Magnetic Anisotropy Sensor
SAKAI Yoshiaki UNISHI
Hiroyuki YAHATA Teruo
Abstract
JFE Engineering
has developed a unique non-destructive stress
measuring method using a magnetic anisotropy
sensor and various evaluation systems applying
this technology. This paper describes the
principle of the stress measuring method and
the experimental results which demonstrate
the usefulness of the method in evaluating
the stress levels in linepipes under working
conditions for maintenance purposes.
