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Abstract

Maintenance of aging infrastructure facilities in urban area is a critical issue. Actually, in Kobe city, two illumination pillars fell down because they had corrosion under the ground line. This study aims to detect corrosion of illumination pillars using ultrasonic guided wave generated by electromagnetic acoustic transducer (EMAT). The guided wave is expected as a quick and long distance inspection technology for piping systems. In this study, a guided wave inspection system using the EMATs is proposed. The guided wave inspection system detects corrosion by reflected waves from corrosion. The effectiveness of the proposed system for screening of corrosion in illumination pillars is verified through experiments using both retired and active illumination pillars.

Keywords

Nondestructive evaluation electromagnetic acoustic transducer guided wave

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References

Gazis

D.C.

, Three-dimensional investigation of the propagation of waves in hollow circular cylinders. I. Analytical Foundation, The Journal of the Acoustical Society of America 31 (1959), 568–573.

Fitch

A.H.

, Observation of elastic-pulse propagation in axially symmetric and nonaxially symmetric longitudinal modes of hollow cylinders, The Journal of the Acoustical Society of America 35 (1963), 706–708.

Rose

J.L.

, A baseline and vision of ultrasonic guided wave inspection potential, Journal of Pressure Vessel Technology 24 (2002), 273–282.

Alleyne

D.N.

and Cawley

, The excitation of Lamb waves in pipes using drycoupled piezoelectric transducers, Journal of Nondestructive Evaluation 15 (1996), 11–20.

Kwun

and Bartels

K.A.

, Magnetostrictive sensor technology and its applications, Ultrasonics 36 (1998), 171–178.

Thompson

R.B.

, Physical principles of measurements with EMAT transducers, Physical Acoustics 19 (1990), 157–200.

Kim

Y.Y.

, Review of magnetostrictive patch transducers and applications in ultrasonic non-destructive testing of waveguides, Ultrasonics 62 (2015), 3–19.

Salzburger

H.J.

, EMAT pipe inspection with guided waves, Welding in the world 56 (2012), 35–43.

Furusawa

Kojima

and Morikawa

, Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array, Nuclear Engineering and Technology 47 (2015), 196–203.

10.

Kojima

and Ito

, Numerical simulation of ultrasonic source mechanism for EMAT based NDE system, in: Proceedings of the 19th Electromagnetic Nondestructive Evaluation (ENDE), 2014, pp. 42–43.

Inspection of illumination pillar using ultrasonic guided wave by electromagnetic acoustic transducer

Abstract

Keywords

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References