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Characterization and sizing of defects in the cladded area using ultrasonic methods

  • With the increasing of the storage capability of digitised data and the development of advanced ultrasonic equipment a characterisation of detected defects is possible without new measurements. If the A-scan is stored in a video form (rectified A-scan) or in a high frequency form evaluation techniques like SAFT or echotomography are applicable with advantage. Therefore in some of the cases an estimation of the defect size is reached by the evaluation of the ultrasonic data collected with conventional detection techniques. This is an advantage in relation to the past, because the application of a separate analysis technique is mostly not necessary, therefore time and money is saved. In the present contribution experimental results received in the laboratory are presented. The application of the TOFD approach for defect detection and sizing of crack like defect in heavy components is demonstrated whereas the probes are coupled on the carbon steel surface as well as on the claddedWith the increasing of the storage capability of digitised data and the development of advanced ultrasonic equipment a characterisation of detected defects is possible without new measurements. If the A-scan is stored in a video form (rectified A-scan) or in a high frequency form evaluation techniques like SAFT or echotomography are applicable with advantage. Therefore in some of the cases an estimation of the defect size is reached by the evaluation of the ultrasonic data collected with conventional detection techniques. This is an advantage in relation to the past, because the application of a separate analysis technique is mostly not necessary, therefore time and money is saved. In the present contribution experimental results received in the laboratory are presented. The application of the TOFD approach for defect detection and sizing of crack like defect in heavy components is demonstrated whereas the probes are coupled on the carbon steel surface as well as on the cladded surface. An important point would be the influences of the anisotropic cladding material in relation to the defect sizing using the TOFD technique. These results will be compared with those received with TR longitudinal wave probes and with shear wave probes.zeige mehrzeige weniger

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Metadaten
Autor*innen:Anton Erhard, Rainer Boehm, Ute Tessaro, Hermann Wüstenberg
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):3rd International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components
Jahr der Erstveröffentlichung:2001
Herausgeber (Institution):Europäische Kommission / Gemeinsame Forschungsstelle
Verlagsort:Seville
Erste Seite:543
Letzte Seite:550
Veranstaltung:3rd International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components
Veranstaltungsort:Seville, Spain
Beginndatum der Veranstaltung:2001-11-14
Enddatum der Veranstaltung:2001-11-16
URL:http://www.ndt.net/abstract/ndesi01/data/98.htm
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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