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Sensitivity of penetrant and magnetic particle testing

Performance testing of detection media for penetrant and magnetic particle testing (PT and MT)
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Published/Copyright: May 26, 2013
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Materials Testing
From the journal Materials Testing Volume 46 Issue 6

Abstract

The sensitivity of penetrant and magnetic particle testing (PT and MT) depends, among other things, on the quality and performance of the “detection media” (for PT designated as “product family”). The determination of the sensitivity is carried out on “reference pieces” with natural or artificial gap-like flaws by determining the visibility of the indications as a measure of the performance. European standardisation specifies the requirements of detection media, in accordance with prEN ISO 3452-2 for PT and EN ISO 9934-2 for MT for type and batch as well as for process control testing. This paper describes the evaluation and qualification of performance during the type testing procedure. The proposed methods are validated by experimental investigations using an image processing system for the determination of the visibility. The reliability of the proposed methods is discussed with reference to the qualification of the detection media.

Kurzfassung

Die Empfindlichkeit von Eindring- und Magnetpulverprüfungen (PT, MT) hängt unter anderem von der Eignung und der Qualität der Prüfmittel ab (für PT bezeichnet als Eindringsystem). Die Ermittlung der Empfindlichkeit erfolgt an Kontrollkörpern mit natürlichen und künstlichen Inhomogenitäten durch Ermittlung der Anzeigenerkennbarkeit als Maß für die Eignung. Die europäischen Normen spezifizieren die Anforderungen an die Prüfmittel für Typen-, Chargen- und Betriebsprüfungen nach pr EN ISO 3452-2 für PT und EN ISO 9934-2 für MT. Dieser Beitrag beschreibt die Ermittlung der Empfindlichkeit von Prüfmitteln sowie deren Qualifizierung bei der Typenprüfung. Die vorgeschlagenen Verfahren wurden durch experimentelle Untersuchungen validiert, bei denen ein Bildverarbeitungssystem zur Ermittlung der Anzeigenerkennbarkeit verwendet wurde. Im Hinblick auf die Qualifizierung der Prüfmittel wird die Zuverlässigkeit der Verfahren diskutiert.

Dipl.-Ing. Meinhard Stadthaus, born in 1937, studied electrical engineering at the Technical University of Berlin. From 1970 until 2001, he was engaged at the “Federal Institute on Materials and Testing” (BAM) in non-destructive testing with electromagnetic methods. He got special practical experiences and carried out research works in the fields of magnetic particle and penetrant testing. He is chairman of the German working group on magnetic particle testing and delegate for MT and PT in the European Committees for standardisation (CEN).

Dr. Hans-Martin Thomas, born in 1951, studied electro technique at the Technical University of Berlin, where he received his PhD in 1986. Since 1978 he is engaged at the Federal Institute for Materials Research and Testing (BAM). In 1992 he became the head of the laboratory for Electrical and Magnetical Methods and received the Adolf Martens award.

Prof. Dr. Nikolai Migoun, born in 1951, graduated from Belarussian State University (Physics Department, 1973). He received his PhD degree in Physics & Mathematics (1981) and Doctor of Sciences degree in Physics & Mathematics (1992). Since 1993 he has been Deputy Director of the Institute of Applied Physics of the National Academy of Sciences of Belarus (Minsk, Belarus). Current fields of interest and activities: liquid penetrant inspection, hydrodynamics of liquids in capillaries and porous media, phase transitions in capillaries, surface phenomena in liquids.

Dipl.-Ing. Alexandr Gnusin, born in 1975, graduated from Belarussian National Technical University (Instrument-Making Department, 1997). Since 1997 he has been a research engineer at the Institute of Applied Physics of National Academy of Sciences of Belarus (Minsk, Belarus). Current fields of interest and activities: liquid penetrant inspection, digital image recognition.

Dipl.-Ing. Jürgen Baugatz, born in 1949, studied mechanical engineering at the Technical University of Hannover. Since 1978 he has been employed at the Material Testing Institution for Materials and Production Technologies, Hannover (MPA) in the field of testing of nondestructive testing and head of the working group for technical inspection and envolved in tape testing for detection media of PT and MT.

Dipl.-Ing. Wolfgang König, born in 1956, studied mechanical engineering at the Technical College in Hannover. Since 1980 he has been employed at the Material Testing Institution for Materials and Production Technologies, Hannover (MPA) in the field of nondestructive testing and technical inspection. He is especially engaged in penetrant- and magnetic particle testing and member of the working group for PT of the European Comitee for standardisation.

References

1 Stadthaus, M.: Evaluation of the viewing conditions in fluorescent penetrant and magnetic particle testing. INSIGHT Vol 39 No 12 (1997) 882Search in Google Scholar

2 EN ISO 3452-3 NDT – PT – Part 3: Reference test blocks 1999Search in Google Scholar

3 EN ISO 3452-2 NDT – PT – Part 2: Testing of penetrant materials; 2000Search in Google Scholar

4 prEN ISO 3452-2 NDT – PT – Part 2: Testing of penetrant materials 2004Search in Google Scholar

5 EN – ISO 9934-2 NDT – MT – Detection media 2002Search in Google Scholar

6 Tanaka, I.; Nomoto, M.; Tagakim, M.: Proposal on Calibration Methods of Visual Condition for Penetrant Testing and Magnetic particle Testing. Proc. 15th WCNDT 2000Search in Google Scholar

7 Stadthaus, M.; Thomas, H.-M.: Anwendung eines Bildverarbeitungssytems zur Ermittlung der Anzeigenerkennbarkeit beim Magnetpulver- und Eindringverfahren. Materialpr- ung304 (1988) 109Search in Google Scholar

8 Stadthaus, M.; Lingott, H.: Some aspects on the reliability of magnetic particle testing. Proc. 7th ECNDT (1998) S. 2927Search in Google Scholar

9 Chedister, W. C.: Visual detection of magnetic particle indications. CINDE (Canadians National NDT Magazine)24 (2003) 6Search in Google Scholar

10 Moore, T.; Starr, A.; Hannah, P.; Hesketh, G.: Digital analysis defect inspection techniques using the fluorescent dye penetrant inspection process. Proc. 15th Int. Congress COMADEN (2002) 405Search in Google Scholar

11 DIN 54 152-2 ZfP – Eindringverfahren – Prüfung von EindringmittelnSearch in Google Scholar

12 Stadthaus, M.; Thomas, H.-M.; Haeger, H.: Bewertung der Empfindlichkeit von Prüfmittelsystemen bei den Eindringverfahren. DGZfP-Jahrestagung 1989, S. 658Search in Google Scholar

13 AMS 2644 SAE International – Aerospace Material Specification – Inspection Material, Penetrant 2000Search in Google Scholar

14 Brausch, J.: Penetrant Evaluation Process. Wright NDE Laboratories1996Search in Google Scholar

15 Dickhaut, E.: Verfahren zur Herstellung eines metallischen Prüfkörpers zur Überwachung von Magnetpulver-Prüfflüssigkeiten. DBP 2357220 (1977)Search in Google Scholar

16 AFNOR A 09 – 570 Essais nondestructiv – Magnetoscopie – Characterisation des produits (1988)Search in Google Scholar

Published Online: 2013-05-26
Published in Print: 2004-06-01

© 2004, Carl Hanser Verlag, München

Articles in the same Issue

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. The effect of microstructure
  5. Fatigue of anisotropic materials
  6. The influence of stress
  7. Fatigue damage accumulation around notches
  8. Refraction computed tomography
  9. Sensitivity of penetrant and magnetic particle testing
  10. Oberflächenprüfungen automatisieren
  11. Vorschau/Preview
  12. Vorschau
https://doi.org/10.3139/120.100591

Articles in the same Issue

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. The effect of microstructure
  5. Fatigue of anisotropic materials
  6. The influence of stress
  7. Fatigue damage accumulation around notches
  8. Refraction computed tomography
  9. Sensitivity of penetrant and magnetic particle testing
  10. Oberflächenprüfungen automatisieren
  11. Vorschau/Preview
  12. Vorschau
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