ASTM E1815-08(2013)e1
Standard Test Method for Classification of Film Systems for Industrial Radiography

Standard No.

ASTM E1815-08(2013)e1

Release Date

2008

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E1815-18

Latest

ASTM E1815-18(2023)

Scope

4.1 This test method provides a relative means for classification of film systems used for industrial radiography. The film system consists of the film and associated processing system (the type of processing and processing chemistry). Section 9 describes specific parameters used for this test method. In general, the classification for hard X-rays, as described in Section 9, can be transferred to other radiation energies and metallic screen types, as well as screens without films. The usage of film system parameters outside the energy ranges specified may result in changes to a film/system performance classification.

4.1.1 The film performance is described by contrast and noise parameters. The contrast is represented by gradient and the noise by granularity.

4.1.2 A film system is assigned a particular class if it meets the minimum performance parameters: for Gradient G at D8201;–8201;D₀8201;=8201;2.0 and D8201;–8201;D₀8201;=8201;4.0, and gradient/noise ratio at D8201;–8201;D₀8201;=8201;2.0, and the maximum performance parameter: granularity σ_D at D8201;=8201;2.0.

4.2 This test method describes how the parameters shall be measured and demonstrates how a classification table can be constructed.

4.3 Manufacturers of industrial radiographic film systems and developer chemistry will be the users of this test method. The result is a classification table as shown by the example given in Table 2. Another table also includes speed data for user information. Users of industrial radiographic film systems may also perform the tests and measurements outlined in this test method, provided that the required test equipment is used and the methodology is followed strictly.

^A8201;Family of films ranging in speed and image quality.

4.4 The publication of classes for industrial radiography film systems will enable specifying bodies and contracting parties to agree to particular system classes, which are capable of providing known image qualities. See 8.

• ASTM E1316 Standard Terminology for Nondestructive Examinations
• ASTM E94 Standard Guide for Radiographic Examination
• ISO 11699-1 Non-destructive testing - Industrial radiographic film - Part 1: Classification of film systems for industrial radiography
• ISO 11699-2 Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values
• ISO 5-2 Photography and graphic technology - Density measurements - Part 2: Geometric conditions for transmittance density
• ISO 5-3 Photography and graphic technology - Density measurements - Part 3: Spectral conditions
• ISO 7004 Photography - Industrial radiographic films - Determination of ISO speed, ISO average gradient and ISO gradients G2 and 64 when exposed to X- and gamma-radiation
• ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]

ASTM E1815-08(2013)e1 history

• 2023 ASTM E1815-18(2023) Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2018 ASTM E1815-18 Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2008 ASTM E1815-08(2013)e1 Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2008 ASTM E1815-08 Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2006 ASTM E1815-06 Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2001 ASTM E1815-96(2001) Standard Test Method for Classification of Film Systems for Industrial Radiography
• 2001 ASTM E1815-96 Standard Test Method for Classification of Film Systems for Industrial Radiography