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A benchmark concept for simulation in radiographic testing

  • The new standard ISO 17636–2:2013 'NDT of welds: Radiographic testing - Part 2: X- and gamma ray techniques with digital detectors' describes a complex procedure for film replacement by phosphor imaging plates and digital detector arrays. RT modeling software should consider these detector types, X-ray film, and the standard requirements for image quality. Practitioners expect the same visibility of image quality indicators (IQI) in the simulated radiographs as in the experimental exposures. The proposed benchmark test is based on the comparison of experimental radiographs taken at BAM with modeled ones of participants. The experimental setup and the determination of the equivalent penetrameter sensitivity (EPS) as described in the procedure of ASTM E 746 are used for quantitative evaluation of the achievable contrast sensitivity for step hole IQIs as considered in Annex B of ISO 17636-2. System classification data for Computed Radiography (CR) and film systems will be provided by BAMThe new standard ISO 17636–2:2013 'NDT of welds: Radiographic testing - Part 2: X- and gamma ray techniques with digital detectors' describes a complex procedure for film replacement by phosphor imaging plates and digital detector arrays. RT modeling software should consider these detector types, X-ray film, and the standard requirements for image quality. Practitioners expect the same visibility of image quality indicators (IQI) in the simulated radiographs as in the experimental exposures. The proposed benchmark test is based on the comparison of experimental radiographs taken at BAM with modeled ones of participants. The experimental setup and the determination of the equivalent penetrameter sensitivity (EPS) as described in the procedure of ASTM E 746 are used for quantitative evaluation of the achievable contrast sensitivity for step hole IQIs as considered in Annex B of ISO 17636-2. System classification data for Computed Radiography (CR) and film systems will be provided by BAM according to ISO 11699–1 for selected film systems and according to ASTM E 2446 for selected CR systems. The classification of films and digital detectors is based on the measurement of the dose response function, the basic spatial resolution (SRb) of the image, and the measured image noise, which depends on the detector efficiency, the quantum statistics, and the detector fixed pattern noise.zeige mehrzeige weniger

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Metadaten
Autor*innen:Uwe Ewert, Andreas Deresch, Carsten BellonORCiD, Gerd-Rüdiger Jaenisch
Persönliche Herausgeber*innen:D.E. Chimenti, L.J. Bond, D.O. Thompson
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):40th Annual review of progress in quantitative nondestructive evaluation (Proceedings)
Jahr der Erstveröffentlichung:2014
Herausgeber (Institution):American institute of physics (AIP)
Verlag:AIP Publishing
Jahrgang/Band:33A
Erste Seite:1816
Letzte Seite:1823
Freie Schlagwörter:Benchmark; Computed radiography; Contrast to noise ratio; Digital radiography; EPS; Modeling; Observer model; Simulation
Veranstaltung:40th Annual review of progress in quantitative nondestructive evaluation
Veranstaltungsort:Baltimore, Maryland, USA
Beginndatum der Veranstaltung:21.07.2013
Enddatum der Veranstaltung:26.07.2013
DOI:10.1063/1.4865044
ISSN:0094-243X
ISBN:978-0-7354-1212-5
ISBN:978-0-7354-1211-8
Bemerkung:
Serientitel: AIP conference proceedings – Series title: AIP conference proceedings
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:26.06.2014
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