ASTM E2597/E2597M-22 PDF

Full title and description

ASTM E2597/E2597M-22 — Standard Practice for Manufacturing Characterization of Digital Detector Arrays. This practice defines a set of quantitative measurements and reporting conventions for evaluating digital detector arrays (DDAs) used in industrial radiography so that different DDAs can be compared on a common basis for nondestructive testing (NDT) applications.

Abstract

This standard practice specifies procedures and performance parameters (for example basic spatial resolution, normalized signal-to-noise metrics, contrast sensitivity, efficiency, image lag, burn‑in, bad pixels, internal scatter) and reporting requirements that manufacturers or integrators use when characterizing digital detector arrays at the point of manufacture. The practice supports reproducible, quantitative comparison of DDA models for NDT purchasers and users.

General information

• Status: Current / Active standard.
• Publication date: January 1, 2022.
• Publisher: ASTM International (Committee E07 on Nondestructive Testing; Subcommittee E07.01 Radiology).
• ICS / categories: 11.040.50 (Radiographic equipment); NDT / industrial radiology category.
• Edition / version: E2597/E2597M-22 (supersedes earlier editions including the 2014 version).
• Number of pages: 17 pages.

(Publication details and current edition information as published by standards distributors and ASTM catalog listings.)

Scope

This practice describes the evaluation of Digital Detector Arrays (DDAs) and provides a common set of tests and metrics for quantitative comparison so that an appropriate DDA can be selected to meet NDT requirements. It is intended primarily for use by manufacturers or integrators to report DDA characteristics; tests may require specialized phantoms and are not primarily intended as routine field tests for end users, though results can inform long‑term performance tracking if so desired. Units are provided in SI or inch‑pound and each unit system is to be treated independently.

Key topics and requirements

• Basic spatial detector resolution (SRb) measurement and reporting.
• Detector efficiency and normalized SNR (dSNRn) evaluation (example reference: at 1 mGy for different energies/beam qualities).
• Achievable contrast sensitivity (CSa) and specific material thickness range (SMTR) characterization.
• Measurements and limits for image lag and burn‑in effects.
• Identification and reporting of bad pixels and nonuniformities, and assessment of internal scatter radiation (ISR).
• Requirement that results be based on a sample group (recommended at least three detectors of a given model) for manufacturing characterization.
• Clear reporting conventions, test phantoms or fixtures, and separate treatment of SI and inch‑pound units.

These key topics are specified to enable reproducible manufacturer reporting and buyer comparison between DDA products.

Typical use and users

Primary users are DDA manufacturers, integrators, and test labs performing factory characterization and acceptance testing of digital detector arrays. Secondary users include procurement engineers, NDT service providers, and industrial radiography purchasers who rely on manufacturer reports to compare detector models and select devices for specific radiographic inspection tasks. The practice is not primarily a field acceptance procedure but provides data useful for specification and selection.

Related standards

This practice references and is used alongside related ASTM documents such as Guide E2736 (digital detector array radiography guidance), Practice E2698 (radiographic examination using DDAs), Practice E2737 (performance evaluation and long‑term stability of DDAs), and Practice E2446 (manufacturing characterization of computed radiography systems). Users frequently consult these related standards and guides for application, performance evaluation, and long‑term stability testing.

Keywords

Digital detector array (DDA), basic spatial detector resolution, normalized SNR (dSNRn), contrast sensitivity, efficiency, image lag, burn‑in, bad pixels, specific material thickness range, internal scatter radiation, NDT radiography.

FAQ

Q: What is this standard?

A: ASTM E2597/E2597M-22 is a standard practice that defines manufacturing characterization tests and reporting conventions for digital detector arrays used in industrial radiography (NDT), enabling quantitative comparison between DDA models.

Q: What does it cover?

A: It covers procedures and metrics for measuring spatial resolution, detector efficiency and normalized SNR, contrast sensitivity, image lag and burn‑in, bad pixels, internal scatter, and related reporting requirements; it also specifies sampling recommendations (e.g., results based on a group of detectors).

Q: Who typically uses it?

A: Manufacturers and integrators of DDAs, factory test laboratories, procurement engineers, and NDT organizations that require standardized, comparable performance data for detector selection and specification.

Q: Is it current or superseded?

A: The -22 edition (E2597/E2597M-22) is the current edition published with an effective date of January 1, 2022; it supersedes earlier editions (including the 2014 edition). Users should confirm the standard status with ASTM for any subsequent revisions.

Q: Is it part of a series?

A: It is part of the ASTM E07 committee’s NDT radiology suite of documents and is associated with companion guides and practices such as E2736, E2698, E2737, and E2446 that address application guidance, radiographic examination using DDAs, long‑term performance evaluation, and related topics.

Q: What are the key keywords?

A: DDA, digital detector array, spatial resolution, normalized SNR, contrast sensitivity, efficiency, image lag, burn‑in, bad pixels, internal scatter, NDT radiography.