{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T23:51:31Z","timestamp":1767829891367,"version":"3.49.0"},"reference-count":20,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,4,12]],"date-time":"2019-04-12T00:00:00Z","timestamp":1555027200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2017"],"award-info":[{"award-number":["2017"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Pipe wall thinning and leakage due to flow accelerated corrosion (FAC) are important safety concerns for nuclear power plants. A shear horizontal ultrasonic pitch\/catch technique was developed for the accurate monitoring of the pipe wall-thickness. A solid couplant should be used to ensure high quality ultrasonic signals for a long operation time at an elevated temperature. We developed a high temperature ultrasonic thickness monitoring method using a pair of shear horizontal transducers and waveguide strips. A computer program for on-line monitoring of the pipe thickness at high temperature was also developed. Both a conventional buffer rod pulse-echo type and a developed shear horizontal ultrasonic waveguide type for a high temperature thickness monitoring system were successfully installed to test a section of the FAC proof test facility. The overall measurement error was estimated as \u00b115 \u03bcm during a cycle ranging from room temperature to 150 \u00b0C. The developed waveguide system was stable for about 3300 h and sensitive to changes in the internal flow velocity. This system can be used for high temperature thickness monitoring in all industries as well as nuclear power plants.<\/jats:p>","DOI":"10.3390\/s19081762","type":"journal-article","created":{"date-parts":[[2019,4,12]],"date-time":"2019-04-12T12:55:04Z","timestamp":1555073704000},"page":"1762","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["On-Line Monitoring of Pipe Wall Thinning by a High Temperature Ultrasonic Waveguide System at the Flow Accelerated Corrosion Proof Facility"],"prefix":"10.3390","volume":"19","author":[{"given":"Se-beom","family":"Oh","sequence":"first","affiliation":[{"name":"Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea"},{"name":"Department of Materials Science and Engineering, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan 31116, Korea"}]},{"given":"Yong-moo","family":"Cheong","sequence":"additional","affiliation":[{"name":"Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea"}]},{"given":"Dong-jin","family":"Kim","sequence":"additional","affiliation":[{"name":"Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea"}]},{"given":"Kyung-mo","family":"Kim","sequence":"additional","affiliation":[{"name":"Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 34057, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2019,4,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1463","DOI":"10.1016\/j.net.2017.05.002","article-title":"High-Temperature Ultrasonic Thickness Monitoring for a Pipe Thinning in FAC Proof Test Facility","volume":"49","author":"Cheong","year":"2017","journal-title":"Nuclear Eng. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/S0308-0161(99)00087-3","article-title":"Flow-accelerated corrosion of pressure vessels in fossil plants","volume":"77","author":"Dooley","year":"2000","journal-title":"Int. J. Press. Vessels Pip."},{"key":"ref_3","first-page":"67","article-title":"Evaluation of Piping Integrity in Thinned Main Feedwater Pipes","volume":"32","author":"Choi","year":"2000","journal-title":"Nucl. Eng. Technol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"546","DOI":"10.5516\/NET.2010.42.5.546","article-title":"Assessment of Wall-Thinning in Carbon Steel Pipe by Using Laser-generated Guided Wave","volume":"42","author":"Kim","year":"2010","journal-title":"Nucl. Eng. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"568","DOI":"10.5516\/NET.2010.42.5.568","article-title":"A Review of CANDU Feeder Wall Thinning","volume":"42","author":"Chung","year":"2010","journal-title":"Nucl. Eng. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"232901","DOI":"10.1063\/1.3524192","article-title":"High Temperature Ultrasonic Transducer up to 1000 \u00b0C using Lithium Niobate Single Crystal","volume":"97","author":"Baba","year":"2010","journal-title":"Appl. Phys. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1218","DOI":"10.1109\/TUFFC.2009.1163","article-title":"Integrated High-temperature Piezoelectric Plate Acoustic Wave Transducers Using Mode conversion","volume":"56","author":"Wu","year":"2009","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1016\/S0924-4247(99)00223-X","article-title":"Materials of Bi4Ti3O12 Type for High Temperature Acoustic Piezo-sensors","volume":"78","author":"Megriche","year":"1999","journal-title":"Sens. Actuators A"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/j.ndteint.2012.08.008","article-title":"The Influence of Sharp Edges in Corrosion Profiles on the Reflection of Guided Waves","volume":"52","author":"Carandente","year":"2012","journal-title":"NDT&E Int."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1016\/j.jsv.2008.05.039","article-title":"Analysis of Wave Propagation in Cylindrical Pipes with Local Inhomogeneities","volume":"319","author":"Zhou","year":"2009","journal-title":"J. Sound Vib."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1016\/j.ndteint.2011.10.004","article-title":"Nakahata, Mode Conversion Behavior of SH Guided Wave in a Tapered Plate","volume":"45","author":"Nurmalia","year":"2012","journal-title":"NDT&E Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1251","DOI":"10.1016\/j.ultras.2013.03.007","article-title":"Ultrasonic Monitoring of Erosion\/Corrosion Thinning Rates in Industrial Piping systems","volume":"53","author":"Honarvar","year":"2013","journal-title":"Ultrasonics"},{"key":"ref_13","first-page":"7","article-title":"High Temperature Ultrasonic transducer: Review","volume":"63","author":"Kazys","year":"2008","journal-title":"Ultrasound"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1016\/j.sna.2005.03.030","article-title":"Influence of Electromagnetic Interferences on the Mass Sensitivity of Love Mode Surface Acoustic Wave Sensors","volume":"123","author":"Francis","year":"2005","journal-title":"Sens. Actuators A"},{"key":"ref_15","unstructured":"Cheong, Y.M., Kim, H.P., and Lee, D.H. (2014, January 28\u201330). A Shear Horizontal Waveguide Technique for Monitoring of High Temperature Pipe Thinning. Proceedings of the 2014 Spring Meeting of the KNS, Jeju, Korea."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"445","DOI":"10.1016\/S0041-624X(01)00083-X","article-title":"High Accuracy Non-contact Ultrasonic Thickness Gauging of Aluminum Sheet using electromagnetic Acoustic Transducers","volume":"39","author":"Dixon","year":"2001","journal-title":"Ultrasonics"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1030","DOI":"10.1016\/j.compstruct.2017.10.059","article-title":"Application of laser Doppler vibrometry for ultrasonic velocity assessment in a composite panel with defect","volume":"184","author":"Maio","year":"2018","journal-title":"Compos. Struct."},{"key":"ref_18","unstructured":"Cheong, Y.M., Kim, H.N., and Kim, H.P. (2014, January 29\u201330). An Ultrasonic Waveguide Technique for On-line Monitoring of the High Temperature Pipe Thinning. Proceedings of the Transactions of the Korean Nuclear Society Spring Meeting, Jeju, Korea."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1109\/TUFFC.2011.1782","article-title":"High-temperature (>500 \u00b0C) Wall Thickness Monitoring Using Dry-coupled Ultrasonic Waveguide transducers","volume":"58","author":"Celga","year":"2011","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control."},{"key":"ref_20","first-page":"559","article-title":"Measurement of Dynamic Elastic Constants of RPV Steel Weld due to Localized Microstructural Variation","volume":"20","author":"Cheong","year":"2001","journal-title":"J. Korean Soc. Non-Destruct. Test."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/8\/1762\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T12:45:02Z","timestamp":1760186702000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/8\/1762"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,4,12]]},"references-count":20,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2019,4]]}},"alternative-id":["s19081762"],"URL":"https:\/\/doi.org\/10.3390\/s19081762","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,4,12]]}}}