Flow-accelerated corrosion (FAC) is a phenomenon which causes wall thinning of pipes, fittings, vessels, and other components in the metal based piping systems that carry water or water-steam mixture in power plants and refineries. Currently used nondestructive techniques, such as radiographic testing (RT), ultrasonic testing (UT), and pulsed eddy current (PEC) testing in order to determine the remaining wall thickness, are time consuming and not economical. Hence, in this work, the use of the fundamental torsional mode ultrasonic guided wave to detect FAC was investigated using the finite element method (FEM) simulations and that were validated with experiments. The torsional wave was generated by the magnetostriction principle using surface mounted strips made of magnetostrictive Hyperco (FeCo) material that provided the source for the surface tractions required to generate the ultrasonic guided wave. The transient electric field was provided through a solenoid coil wound over the strips and permanent magnets were employed to provide the bias magnetic field. From this work, it was observed that the pulse-echo method is not suitable for the FAC detection because of the insignificant reflections from FAC defect region that could not be effectively detected. The through-transmission method was found to be more suitable for the FAC detection because the amplitude of transmitted signal decreased with increase in radial depth of FAC in both the simulation and experiment.
Issue Section:
Materials and Fabrication
Keywords:
NDE
References
1.
Petric
, G. W.
, and Ksiazek
, P. E.
, 1997
, “Flow-Accelerated Corrosion in Industrial Steam and Power Plants
,” TAPPI Engineering Conference
, Minneapolis
, pp. 1537
–1542
.2.
Dooley
, R. B.
, 2008
, “Flow-Accelerated Corrosion in Fossil and Combined Cycle/HRSG Plants
,” PowerPlant Chem.
, 10
(2
), pp. 68
–89
.3.
Dooley
, R. B.
, and Chexal
, V. K.
, 2000
, “Flow-Accelerated Corrosion of Pressure Vessels in Fossil Plants
,” Int. J. Press. Vessels Pip.
, 77
(2–3
), pp. 85
–90
.4.
Chakraborty
, P. L.
, and Bhave
, M. Y.
, 2010
, “Flow Accelerated Corrosion Failures in Refineries
,” Hydrocarbon Asia, July-Sept., pp. 40
–46
.5.
Yurmanov
, V.
, and Rakhmanov
, A.
, 2009
, “Flow Accelerated Corrosion of Pipelines and Equipment at Russian NPPs: Problems and Solutions
,” International Atomic Energy Agency Workshop on Erosion-Corrosion Including Flow Accelerated Corrosion and Environmentally Assisted Cracking Issues in Nuclear Power Plants, Moscow, April 21–23.6.
Ahmed
, W. H.
, 2009
, “Effective Flow Accelerated Corrosion Maintenance Program for Reliable Power Generating Stations
,” Symposium on Maintenance
, Dhahran
, April.7.
Ramu
, A.
, Jabbar
, A.
, Dhanmeher
, N. K.
, Mali
, C. S.
, Roy
, N. K.
, Daniel
, V. S.
, Ravindranath, Bhattacharjee
, S.
, and Ramamurty
, U.
, 2010
, “Role of Weld Root Geometry—Backing Rings in Flow Accelerated Corrosion (FAC): Radiography Testing is an Alternate NDT Method for Detection—An Experience at Tarapur Atomic Power Station-1&2; Nuclear Power Corporation of India Limited, India
,” European Conference on Non-Destructive Testing
, Moscow
, Russia.8.
Mohr
, W.
, and Höller
, P.
, 1976
, “On Inspection of Thin-Walled Tubes for Transverse and Longitudinal Flaws by Guided Ultrasonic Waves
,” IEEE Trans. Sonics Ultrason.
, 23
(5
), pp. 369
–374
.9.
Silk
, M. G.
, and Bainton
, K. F.
, 1979
, “The Propagation in Metal Tubing of Ultrasonic Wave Modes Equivalent to Lamb Waves
,” Ultrasonics
, 17
(1
), pp. 11
–19
.10.
Ditri
, J. J.
, 1994
, “Utilization of Guided Waves for the Characterization of Circumferential Cracks in Hollow Cylinders
,” J. Acoust. Soc. Am.
, 96
(6
), pp. 3769
–3775
.11.
Lowe
, M. J. S.
, Alleyne
, D. N.
, and P.
Cawley
, 1998
, “Defect Detection in Pipes Using Guided Waves
,” Ultrasonics
, 36
(1
), pp. 147
–154
.12.
Alleyne
, D. N.
, Lowe
, M. J. S.
, and Cawley
, P.
, 1998
, “The Reflection of Guided Waves From Circumferential Notches in Pipes
,” ASME J. Appl. Mech.
, 65
(3
), pp. 635
–641
.13.
Kwun
, H.
, Kim
, S. Y.
, and Light
, G. M.
, 2001
, “Long-Range Guided Wave Inspection of Structures Using the Magnetostrictive Sensor
,” J. Korean Soc. Nondestr. Test.
, 21
(4
), pp. 383
–390
.14.
Alleyne
, D. N.
, Pavlakovic
, B.
, Lowe
, M. J. S.
, and Cawley
, P.
, 2001
, “Rapid Long Range Inspection of Chemical Plant Pipework Using Guided Waves
,” Insight: Non-Destr. Test. Condition Monit.
, 43
(2
), pp. 93
–96
.15.
Bai
, H.
, Shah
, A. H.
, Popplewell
, N.
, and Datta
, S. K.
, 2001
, “Scattering of Guided Waves by Circumferential Cracks in Steel Pipes
,” ASME J. Appl. Mech.
, 68
(4
), pp. 619
–631
.16.
Zhu
, W.
, 2002
, “An FEM Simulation for Guided Elastic Wave Generation and Reflection in Hollow Cylinders With Corrosion Defects
,” J. Press. Vessel Technol.
, 124
(1
), pp. 108
–117
.17.
Barshinger
, J.
, Rose
, J. L.
, and Avioli
, M. J.
, 2002
, “Guided Wave Resonance Tuning for Pipe Inspection
,” ASME J. Pressure Vessel Technol.
, 124
(3
), pp. 303
–310
.18.
Cawley
, P.
, Lowe
, M. J. S.
, Simonetti
, F.
, Chevalier
, C.
, and Roosenbrand
, A. G.
, 2002
, “The Variation of the Reflection Coefficient of Extensional Guided Waves in Pipes From Defects as a Function of Defect Depth, Axial Extent, Circumferential Extent and Frequency
,” J. Mech. Eng. Sci.
, 216
(11), pp. 1131
–1143
.19.
Rose
, J. L.
, Sun
, Z.
, Mudge
, P. J.
, and Avioli
, M. J.
, 2003
, “Guided Wave Flexural Mode Tuning and Focusing for Pipe Testing
,” Mater. Eval.
, 61
(2
), pp. 162
–167
.20.
Demma
, A.
, Cawley
, P.
, Lowe
, M.
, and Roosenbrand
, A. G.
, 2003
, “The Reflection of the Fundamental Torsional Mode From Cracks and Notches in Pipes
,” J. Acoust. Soc. Am.
, 114
(2
), pp. 611
–625
.21.
Cheong
, Y. M.
, Kim
, S. S.
, Lee
, D. H.
, Jung
, H. K.
, and Kim
, Y. H.
, 2004
, “Detection of Axial Cracks in a Bent Pipe Using EMAT Torsional Guided Waves
,” World Conference on NDT
, Montreal
, Canada.22.
Demma
, A.
, Cawley
, P.
, Lowe
, M.
, Roosenbrand
, A. G.
, and Pavlakovic
, B.
, 2004
, “The Reflection of Guided Waves From Notches in Pipes: A Guide for Interpreting Corrosion Measurements
,” NDT and E Int.
, 37
(3), pp. 167
–180
.23.
Kim
, Y. Y.
, Park
, C. I.
, Cho
, S. H.
, and Han
, S. W.
, 2005
, “Torsional Wave Experiments With a New Magnetostrictive Transducer Configuration
,” J. Acoust. Soc. Am.
, 117
(6
), pp. 3459
–3468
.24.
Hayashi
, T.
, and Murase
, M.
, 2005
, “Defect Imaging With Guided Waves in a Pipe
,” J. Acoust. Soc. Am.
, 117
(4
), pp. 2134
–2140
.25.
Liu
, Z.
, He
, C.
, Wu
, B.
, Wang
, X.
, and Yang
, S.
, 2006
, “Circumferential and Longitudinal Defect Detection Using T(0, 1) Mode Excited by Thickness Shear Mode Piezoelectric Elements
,” Ultrasonics
, 44
(suppl 1
), pp. e1135
–e1138
.26.
Kim
, J. Y.
, Lee
, D. H.
, Park
, K. S.
, Jo
, Y. D.
, Choi
, S. C.
, Lee
, C. H.
, Song
, S. J.
, and Cheong
, Y. M.
, 2006
, “Long Range Inspection of City Gas Pipeline Using Ultrasonic Guided Waves
,” Asia-Pacific Conference on NDT
, Auckland
, New Zealand.27.
Zhang
, L.
, Luo
, W.
, and Rose
, J. L.
, 2006
, “Ultrasonic Guided Wave Focusing Beyond Welds in a Pipeline
,” Review of Progress in Quantitative Nondestructive Evaluation
, Vol. 25
, D. O.
Thompson
and D. E.
Chimenti
, ed., Plenum Publishing Corporation
, NY
, pp. 877
–884
.28.
Kannan
, E.
, Maxfield
, B. W.
, and Balasubramaniam
, K.
, 2007
, “SHM of Pipes Using Torsional Waves Generated by In Situ Magnetostrictive Tapes
,” Smart Mater. Struct.
, 16
(6
), pp. 2505
–2515
.29.
Lee
, J. H.
, and Lee
, S. J.
, 2009
, “Application of Laser-Generated Guided Wave for Evaluation of Corrosion in Carbon Steel Pipe
,” NDT and E Int.
, 42
(3
), pp. 222
–227
.30.
Davies
, J.
, and Cawley
, P.
, 2009
, “The Application of Synthetic Focusing for Imaging Crack-Like Defects in Pipelines Using Guided Waves
,” IEEE Trans. Ultrason. Ferroelectr. Freq. Control
, 56
(4
), pp. 759
–771
.31.
Ratassepp
, M.
, Fletcher
, S.
, and Lowe
, M. J. S.
, 2010
, “Scattering of the Fundamental Torsional Mode at an Axial Crack in a Pipe
,” J. Acoust. Soc. Am.
, 127
(2
), pp. 730
–740
.32.
Carandente
, R.
, Ma
, J.
, and Cawley
, P.
, 2010
, “The Scattering of the Fundamental Torsional Mode From Axi-Symmetric Defects With Varying Depth Profile in Pipes
,” J. Acoust. Soc. Am.
, 127
(4
), pp. 3440
–3448
.33.
Wang
, X.
, Tse
, P. W.
, Mechefske
, C. K.
, and Hua
, M.
, 2010
, “Experimental Investigation of Reflection in Guided Wave-Based Inspection for the Characterization of Pipeline Defects
,” NDT and E Int.
, 43
(4), pp. 365
–374
.34.
Zheng
, M. F.
, Lu
, C.
, Chen
, G. Z.
, and Men
, P.
, 2011
, “Modeling Three-Dimensional Ultrasonic Guided Wave Propagation and Scattering in Circular Cylindrical Structures Using Finite Element Approach
,” Phys. Procedia
, 22
, pp. 112
–118
.35.
Ratassepp
, M.
, Fletcher
, S.
, and Klauson
, A.
, 2011
, “Axial Defect Imaging in a Pipe Using Synthetically Focused Guided Waves
,” Est. J. Eng.
, 17
(1
), pp. 66
–75
.36.
Kim
, Y. G.
, Moon
, H. S.
, Park
, K. J.
, and Lee
, J. K.
, 2011
, “Generating and Detecting Torsional Guided Waves Using Magnetostrictive Sensors of Crossed Coils
,” NDT and E Int.
, 44
(2), pp. 145
–151
.37.
Løvstad
, A.
, and Cawley
, P.
, 2011
, “The Reflection of the Fundamental Torsional Guided Wave From Multiple Circular Holes in Pipes
,” NDT and E Int.
, 44
(2), pp. 553
–562
.38.
Carandente
, R.
, and Cawley
, P.
, 2012
, “The Effect of Complex Defect Profiles on the Reflection of the Fundamental Torsional Mode in Pipes
,” NDT and E Int.
, 46
, pp. 41
–47
.39.
Løvstad
, A.
, and Cawley
, P.
, 2012
, “The Reflection of the Fundamental Torsional Mode From Pit Clusters in Pipes
,” NDT and E Int.
, 46
, pp. 83
–93
.40.
Cawley
, P.
, 2002
, “Practical Long Range Guided Wave Inspection—Managing Complexity
,” Review of Progress in Quantitative Nondestructive Evaluation
, Vol. 22
, D. O.
Thompson
and D. E.
Chimenti
, ed., Plenum Publishing Corporation
, NY
, pp. 22
–40
.41.
Drozdz
, M. B.
, 2007
, “Efficient Finite Element Modeling of Ultrasound Waves in Elastic Media
,” Ph.D. thesis, Imperial College, University of London, London.42.
Alleyne
, D. N.
, and Cawley
, P.
, 1992
, “The Interaction of Lamb Waves With Defects
,” IEEE Trans. Ultrason. Ferroelectr. Freq. Control
, 39
(3
), pp. 381
–397
.43.
Lowe
, M. J. S.
, and Diligent
, O.
, 2002
, “Low-Frequency Reflection Characteristics of the s0 Lamb Wave From a Rectangular Notch in a Plate
,” J. Acoust. Soc. Am.
, 111
(1
), pp. 64
–74
.44.
Kwun
, H.
, and Bartels
, K. A.
, 1998
, “Magnetostrictive Sensor Technology and its Applications
,” Ultrasonics
, 36
(1
), pp. 171
–178
.45.
Demma
, A.
, Cawley
, P.
, Lowe
, M.
, and Pavlakovic
, B.
, 2005
, “The Effect of Bends on the Propagation of Guided Waves in Pipes
,” ASME J. Pressure Vessel Technol.
, 127
(3
), pp. 328
–335
.46.
Verma
, B.
, Mishra
, T. K.
, Balasubramaniam
, K.
, and Rajagopal
, P.
, 2014
, “Interaction of Low-Frequency Axisymmetric Ultrasonic Guided Waves With Bends in Pipes of Arbitrary Bend Angle and General Bend Radius
,” Ultrasonics
, 54
(3
), pp. 801
–808
.47.
Pattanayak
, R.
, Manogharan
, P.
, Balasubramaniam
, K.
, and Rajagopal
, P.
, 2015
, “Low Frequency Axisymmetric Longitudinal Guided Waves in Eccentric Annular Cylinders
,” J. Acoust. Soc. Am.
, 137
(6
), pp. 3253
–3262
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