Issue << content << Digitization of Radiographic Images. What Is Necessary to Consider at Development and Deployment of Russian Standards


DOI:

2013. . No. 3(61) - Sep 2013, pp. 30-35

Digitization of Radiographic Images. What Is Necessary to Consider at Development and Deployment of Russian Standards

K. A. Bagaev, S. S. Kozlovsky

The paper considers one of the areas of digital radiography — X-ray films digitization. Advantages and disadvantages of digitization techniques are discussed. Contradictions of the international standard ISO 14096 and Russian GOST 7512-82 are emphasized.
The authors also calculated the films’ optical density fluctuations with the use of Monte-Carlo computer simulations (MCC 3D program). On the calculations basis an alternative criterion for selecting the minimum value of the density contrast sensitivity has been proposed. The criterion takes into account not only digitizer’s properties but also own optical density fluctuations of films.
 
References
  1. Bagaev K.A., Varlamov A.N. Ekspozitsiya. Neft. Gaz [Exposure. Oil. Gas]. 2012, no. 2(20), pp. 69–71 (in Russ).
  2. Bagaev K.A., Uludintseva A.I. Ekspozitsiya.Neft. Gaz [Exposure. Oil. Gas]. 2013, no. 1(26), pp. 54–56 (in Russ.).
  3. ISO 14096-1:2005. Non-destructive testing — Qualification of radiographic film digitization systems — Part 1: Definitions, quantitative measurements of image quality parameters, standard reference film and qualitative control. ISO, 2005-06-15.
  4. ISO 14096-2:2005. Non-destructive testing — Qualification of radiographic film digitization systems — Part 2: Minimum requirements. ISO, 2005-06-15.
  5. GOST 7512-82. Kontrol nerazrushayushchiy, soedineniya svarnye, radiograficheskiy metod [Non-destructive testing. Welded joints. Radiography method]. IPK Izdatelstvo Standartov, Moscow, 1982 (in Russ.).
  6. Bagaev K.A., Kozlovskiy S.S., Novikov I.E. Apparatura i novosti radiatsionnykh izmereniy [Hardware and Radiation Measurement News]. 2007, no. 4, pp. 35–40 (in Russ.).
  7. OST 108.004.110-87. Soedineniya svarnye oborudovaniya atomnykh elektrostanciy. Radiograficheskiy kontrol [Welded joints of nuclear power plants equipment. Radiography inspection] (in Russ.).
  8. PК 1514-72. Pravila kontrolya svarnykh soedineniy i naplavok uzlov i konstruktsiy atomnykh elektrostanciy, opytnych i issledovatelskikh yadernykh reaktorov i ustanovok [Inspection rules for welds and welding pads of nuclear power plant units and structures]. Moscow, Меtallurgiya, 1975 (in Russ.).
 
published
NDT in Mining Industry

MAIN FEATURE:
NDT in Mining Industry

CONTACTS

5 Udelny Pr.
St. Petersburg
007 812 670 7609
007 812 670 7611


NDT World, Russian Quarterty Journal
©2000-2016 All rights reserved