NDT World NDT World В мире неразрушающего контроля 1609-3178 12932 10.12737/21156 Ультразвуковой контроль Ultrasonic Inspection Ультразвуковой контроль Productivity and Reliability Study of Non Destructive Testing Techniques for Inspection of Structural Welds in Construction Industry Анализ производительности и надёжности методов неразрушающего контроля сварных швов в строительстве Чан Алан Chan Alan Бабу Саджиш Кумар Babu Sajeesh Kumar Кумар skbabu@astarconsult.com Чан В. Т. Chan V. Т. 20 09 2016 20 09 2016 19 3 35 39 https://zh-szf.ru/en/nauka/article/12932/view

Целью статьи является оценка производительности и надежности контроля сварных швов на промышленных объектах в Гонконге. Сравниваются три метода: ручной УЗК эхо-методом, полуавтоматический УЗК с использованием дефектоскопов с преобразователями на фазированных решётках и рентгеновский контроль. Проанализировано выявление пяти типов дефектов: неполное проплавление, непровар, трещина, пористость и шлаковые включения. Контроль проводился на образцах с искусственными дефектами в зоне шва.

Introduction. The aim of this study is to evaluate the productivity and reliability of non-destructive testing techniques for the inspection of structural welds employed in the Hong Kong construction industry. Method. Manual ultrasonic pulse echo method and semi-automatic ultrasonic techniques using phased array (PAUT) as well as radiographic testing were employed. Five classes of defects were analyzed: lack of penetration, lack of fusion, crack, porosity and slag inclusion. The tests were carried out on the specimen made from structural plate, on which artefacts were inserted on the weld metal. The results were being studied to compare the defect detection reliability by both ultrasonic techniques. The flaw detection productivity using phased array is also compared with conventional ultrasonic testing at a determined rate. Results. The reliability of PAUT was 100% compared to 96.7% with manual ultrasonic testing, however with the inclusion of defect sizing and tolerance the reliability of manual UT is dropped to 57.4%, which implies there is a chance of 42.6% of improper sizing). PAUT exhibits the reliability of 87.5%. The research will be continued with the aim of determining the most appropriate and reliable NDT methods in each case.

 ультразвуковой контроль фазированные решетки достоверность контроля производительность контроля вероятность выявления дефектов (POD) определение размеров дефектов ultrasonic testing phased array testing reliability testing productivity POD defect sizing

Kurz J. H., Jüngert A., Dugan S., Dobmann G., Boller C. Reliability considerations of NDT by probability of detection (POD) determination using ultrasound phased array. 18th World Conference on Nondestructive Testing, 16-20 April 2012, Durban, South Africa. Available at: http://www.ndt.net/article/wcndt2012/papers/329_wcndtfinal00329.pdf (accessed on 04.08.2016). Kurz J. H., Jüngert A., Dugan S., Dobmann G., Boller C. Reliability considerations of NDT by probability of detection (POD) determination using ultrasound phased array. 18th World Conference on Nondestructive Testing, 16-20 April 2012, Durban, South Africa. Available at: http://www.ndt.net/article/wcndt2012/papers/329_wcndtfinal00329.pdf (accessed on 04.08.2016). Lancaster J. Handbook of Structural Welding: Processes, Materials and Methods Used in the Welding of Major Structures, Pipelines & Process Plants. Cambridge, Abington Publishing, 1997, 444 p. Lancaster J. Handbook of Structural Welding: Processes, Materials and Methods Used in the Welding of Major Structures, Pipelines & Process Plants. Cambridge, Abington Publishing, 1997, 444 p. HOKLAS Supplementary Criteria No.36 - HKAS Publication. Construction Material Test category - Supplementary Accreditation Requirements. Available at: http://www.itc.gov.hk/en/quality/hkas/doc/SupplementaryCriteria/HOKLAS_SC-36.pdf (accessed on 04.0.8.2016). HOKLAS Supplementary Criteria No.36 - HKAS Publication. Construction Material Test category - Supplementary Accreditation Requirements. Available at: http://www.itc.gov.hk/en/quality/hkas/doc/SupplementaryCriteria/HOKLAS_SC-36.pdf (accessed on 04.0.8.2016). Ali A.-H., Balint D., Temple A., Leevers P. The reliability of defect sentencing in manual ultrasonic inspection. NDT & E International. 2012, v. 51, pp. 101-110. Ali A.-H., Balint D., Temple A., Leevers P. The reliability of defect sentencing in manual ultrasonic inspection. NDT & E International. 2012, v. 51, pp. 101-110. Carvalho A. A., Rebello J. M. A., Souza M. P. V., Sagrilo L. V. S., Soares S. D. Reliability of non-destructive test techniques in the inspection of pipelines used in the oil industry. International J. Pressure Vessels and Piping. 2008, v. 85, issue 11, pp. 745-751. Carvalho A. A., Rebello J. M. A., Souza M. P. V., Sagrilo L. V. S., Soares S. D. Reliability of non-destructive test techniques in the inspection of pipelines used in the oil industry. International J. Pressure Vessels and Piping. 2008, v. 85, issue 11, pp. 745-751. Matzkanin G. A., Yolken H. T. A Technology Assessment of Probability of Detection (POD) for Non Destructive Evaluation (NDE). Austin, NTIAC, 2001, 53 p. Matzkanin G. A., Yolken H. T. A Technology Assessment of Probability of Detection (POD) for Non Destructive Evaluation (NDE). Austin, NTIAC, 2001, 53 p. Barnett V., Lewis T. Outliers in Statistical Data. New York, John Wiley & Sons, 1985, 582 p. Barnett V., Lewis T. Outliers in Statistical Data. New York, John Wiley & Sons, 1985, 582 p.