ISO 19232-4:2013
(Main)Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables
Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables
ISO 19232-4:2013 gives instructions for the determination of image quality values and image quality tables. If the IQI requirements specified in ISO 19232‑3 cannot be used because, for example, the absorption coefficients of the IQI material and the inspected material differ by more than 30 %, test exposures are necessary to determine acceptance of image quality values. The image quality values achieved by the test exposures are required for all exposures made under the same radiographic conditions.
Essais non destructifs — Qualité d'image des radiogrammes — Partie 4: Évaluation expérimentale des indices de qualité d'image et des tables de qualité d'image
L'ISO 19232-4:2013 donne les instructions pour déterminer les indices de qualité d'image et les tables de qualité d'image. S'il n'est pas possible d'appliquer à l'IQI les exigences spécifiées dans l'ISO 19232-3, parce que, par exemple, les coefficients d'absorption du matériau de l'IQI et du matériau soumis à essai diffèrent de plus de 30 %, il est nécessaire d'utiliser des expositions d'essai pour déterminer des indices de qualité d'image acceptables. Les indices de qualité d'image obtenus par les expositions d'essai sont requis pour toutes les expositions faites dans les mêmes conditions radiographiques.
General Information
- Status
- Published
- Publication Date
- 12-Jun-2013
- Technical Committee
- ISO/TC 135/SC 5 - Radiographic testing
- Drafting Committee
- ISO/TC 135/SC 5 - Radiographic testing
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 02-Jan-2024
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 06-Jun-2022
- Effective Date
- 13-Nov-2010
Overview
ISO 19232-4:2013 is an essential international standard dedicated to non-destructive testing (NDT) of radiographs, specifically focusing on the image quality evaluation of radiographic inspections. This part of the ISO 19232 series provides detailed instructions for the experimental determination of image quality values and the development of image quality tables when standard Image Quality Indicator (IQI) requirements cannot be directly applied. It addresses situations where differences in absorption coefficients between the IQI material and the inspected material exceed 30%, requiring specialized test exposures to validate image quality.
The standard is fundamental for ensuring consistent, reliable radiographic evaluations and quality assurance in industrial NDT applications where radiographic clarity and precision are critical.
Key Topics
- Image Quality Indicators (IQIs): Devices composed of elements, such as graded wires or step holes, that measure the detail demonstrated on a radiographic image.
- Image Quality Value (IQV): A quantitative measure representing the smallest detectable element on a radiograph, indicating the level of detail achieved.
- Experimental Evaluation: Procedures to determine image quality values by performing two identical test exposures under set radiographic conditions. Consistency between exposures confirms acceptance.
- Image Quality Tables: Created from experimental data across different material thicknesses to establish minimum acceptable image quality values relative to penetrated thickness ranges.
- Applicability: Used when standard IQI methods defined in ISO 19232-3 are unsuitable, particularly due to variations in material absorption characteristics.
Applications
ISO 19232-4:2013 is applied extensively in industries employing radiographic testing to assess material integrity, detect flaws, and ensure manufacturing and maintenance quality. Key application areas include:
- Weld Inspection: To verify weld quality and detect cracks or voids with precise detail requirements adjusted for different material types.
- Pipeline and Pressure Vessel Testing: Ensures critical infrastructure materials meet stringent safety criteria through accurate image quality verification.
- Aerospace and Automotive Components: Supports high-precision radiographic inspections where variations in material properties demand customized quality evaluation.
- Quality Assurance Programs: Provides documented and repeatable methods for controlling radiographic image quality, vital for regulatory compliance and certification.
By experimentally verifying image quality values, organizations can adapt radiographic examinations to varying material characteristics, ensuring dependable flaw detection even in challenging inspection scenarios.
Related Standards
ISO 19232-4:2013 is part of a comprehensive suite of standards for the image quality of radiographs under the ISO 19232 series, including:
- ISO 19232-1: Determination of image quality value using wire-type IQIs
- ISO 19232-2: Determination of image quality value using step/hole-type IQIs
- ISO 19232-3: Image quality classes, setting standard acceptance criteria
- ISO 19232-5: Determination of image unsharpness value using duplex wire-type IQIs
- ISO 5579: Basic rules for radiographic testing of metallic materials using film and X- or gamma rays
Integrating ISO 19232-4 with these related standards provides a robust framework for non-destructive radiographic testing, enhancing consistency and confidence in image quality assessment worldwide.
Keywords: ISO 19232-4, non-destructive testing, radiographic image quality, image quality values, image quality tables, experimental evaluation, image quality indicator (IQI), radiographic inspection, material testing, quality assurance in radiography.
Frequently Asked Questions
ISO 19232-4:2013 is a standard published by the International Organization for Standardization (ISO). Its full title is "Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables". This standard covers: ISO 19232-4:2013 gives instructions for the determination of image quality values and image quality tables. If the IQI requirements specified in ISO 19232‑3 cannot be used because, for example, the absorption coefficients of the IQI material and the inspected material differ by more than 30 %, test exposures are necessary to determine acceptance of image quality values. The image quality values achieved by the test exposures are required for all exposures made under the same radiographic conditions.
ISO 19232-4:2013 gives instructions for the determination of image quality values and image quality tables. If the IQI requirements specified in ISO 19232‑3 cannot be used because, for example, the absorption coefficients of the IQI material and the inspected material differ by more than 30 %, test exposures are necessary to determine acceptance of image quality values. The image quality values achieved by the test exposures are required for all exposures made under the same radiographic conditions.
ISO 19232-4:2013 is classified under the following ICS (International Classification for Standards) categories: 19.100 - Non-destructive testing. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 19232-4:2013 has the following relationships with other standards: It is inter standard links to ISO/IEC 9995-3:2002, ISO 19232-4:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 19232-4:2013 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 19232-4
Second edition
2013-06-15
Non-destructive testing — Image
quality of radiographs —
Part 4:
Experimental evaluation of image
quality values and image quality tables
Essais non destructifs — Qualité d’image des radiogrammes —
Partie 4: Évaluation expérimentale des indices de qualité d’image et
des tables de qualité d’image
Reference number
©
ISO 2013
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Terms and definitions . 1
3 Experimental evaluation of image quality values . 1
4 Determination of image quality tables . 2
Bibliography . 3
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 19232-4 was prepared by the European Committee for Standardization (CEN) in collaboration with
ISO Technical Committee TC 135, Non-destructive testing, Subcommittee SC 5, Radiation methods, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cance
...
NORME ISO
INTERNATIONALE 19232-4
Deuxième édition
2013-06-15
Essais non destructifs — Qualité
d’image des radiogrammes —
Partie 4:
Évaluation expérimentale des indices
de qualité d’image et des tables de
qualité d’image
Non-destructive testing — Image quality of radiographs —
Part 4: Experimental evaluation of image quality values and image
quality tables
Numéro de référence
©
ISO 2013
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2013
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2013 – Tous droits réservés
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Termes et définitions . 1
3 Évaluation expérimentale des indices de qualité d’image. 1
4 Détermination des tables de qualité d’image. 2
Bibliographie . 4
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (CEI) en ce qui concerne
la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives
ISO/CEI, Partie 2.
La tâche principale des comités techniques est d’élaborer les Normes internationales. Les projets de
Normes internationales adoptés par les comités techniques sont soumis aux comités membres pour vote.
Leur publication comme Normes internationales requiert l’approbation de 75 % au moins des comités
membres votants.
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable de
ne pas avoir identifié de tels droits de propriété et averti de leur existence.
L’ISO 19232-4 a été élaborée par le comité technique CEN/TC 138, Essais non destructifs, du Comité
européen de normalisation (CEN) en collaboration avec le comité technique ISO/TC 135, Essais non
destructifs, sous-comité SC 5, Moyens utilisant les rayonnements, conformément à l’Accord de coopération
technique entre l’ISO et le CEN (Accord de Vienne).
Cette deuxième édition annule et remplace la première édition (ISO 19232-4:2004), dont elle constitue
une révision mineure avec les changements suivants:
— mise à jour des références;
— correction de la Figure 1 et de sa légende.
L’
...
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