Distributed brillouin scattering sensor for discrimination of wall-thinning defects in steel pipe under internal pressure.
A distributed Brillouin scattering sensor has been employed to identify several inner wall cutouts in an end-capped steel pipe by measuring the axial and hoop strain distributions along the outer surface of the pipe. The locations of structural indentations that constitute 50-60% of the inner pipe wall are found and distinguished by use of their corresponding strain-pressure data. These results are quantified in terms of the fiber orientation, defect size and depth, and behavior relative to those of unperturbed pipe sections.
Zou
Lufan
L
Fiber Optics Group, Department of Physics, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada. lufan.zou@science.uottawa.ca
Ferrier
Graham A
GA
Afshar
Shahraam
S
Yu
Qinrong
Q
Chen
Liang
L
Bao
Xiaoyi
X