Title :
Development of guided wave simulator and application to sizing methodologies of pipe wall thinning
Author :
Kojima, Fumio ; Tsubota, Jun-Ichi
Author_Institution :
Grad. Sch. of Eng., Kobe Univ., Kobe, Japan
Abstract :
This paper is concerned with structural health monitoring techniques for pipe wall thinning using ultrasonic guided wave methods. First, our inspection model can be represented by linear elastic systems on a cylindrical shell. Secondly, numerical scheme of inspection is developed by Fourier-Galerkin approximations. Thirdly, we propose a computational method for identifying position, range, and sizing of flow accelerated corrosion (FAC). Finally, the effectiveness and validity are demonstrated through computational experiments.
Keywords :
Fourier analysis; Galerkin method; condition monitoring; corrosion testing; structural engineering; ultrasonic materials testing; Fourier-Galerkin approximations; cylindrical shell; flow accelerated corrosion; linear elastic systems; pipe wall thinning; sizing; structural health monitoring; ultrasonic guided wave; Acceleration; Aging; Capacitive sensors; Computational modeling; Corrosion; Inspection; Inverse problems; Nuclear power generation; Power generation; Stress; Identification; Nondestructive testing; condition monitoring; inverse problems; simulator;
Conference_Titel :
ICCAS-SICE, 2009
Conference_Location :
Fukuoka
Print_ISBN :
978-4-907764-34-0
Electronic_ISBN :
978-4-907764-33-3
