ISO 15708-4:2017 PDF

Name: ISO 15708-4:2017 — Non-destructive testing — Radiation methods for computed tomography — Part 4: Qualification
SKU: ISO 15708-4:2017
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Non-destructive testing — Radiation methods for computed tomography — Part 4: Qualification

Название (английский):

ISO 15708-4:2017

Non-destructive testing — Radiation methods for computed tomography — Part 4: Qualification

Статус документа:: Отменён
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 13 января 2017 г.
Издание:: ISO IS 15708 edition 1 version 1
ICS:: 19.100

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Описание (английский):

ISO 15708-4:2017 specifies guidelines for the qualification of the performance of a CT system with respect to various inspection tasks. It is applicable to industrial imaging (i.e. non-medical applications) and gives a consistent set of CT performance parameter definitions, including how those performance parameters relate to CT system specifications. ISO 15708-4:2017 deals with computed axial tomography and excludes other types of tomography such as translational tomography and tomosynthesis.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 15708-4:2017 - Non-destructive testing - Radiation methods for computed tomography - Part 4: Qualification - provides guidelines to qualify the performance of industrial computed tomography (CT) systems for specific inspection tasks. It applies to computed axial tomography used in non-medical (industrial) imaging and defines consistent CT performance parameter definitions and how they relate to system specifications. The standard excludes translational tomography and tomosynthesis.

Key topics and requirements

Qualification of inspection

Distinguishes between defect testing and dimensional testing, requiring task-specific qualification when derived quantities (e.g., pore size, wall thickness) are needed.
Emphasizes trained personnel and traceable documentation.

Quality feature definition

Define test object and test feature attributes: dimensions, material, path length, feature type/size/position/distribution and limiting defect/feature.

Feature detectability & system parameterization

Spatial resolution factors: overall image resolution, scan geometry, detector resolution, X‑ray focal spot.
Contrast resolution factors: detector settings, tube voltage/current.
Reconstruction/visualization factors: number of projections, CT grey‑value dynamic range, image voxel size (X, Y, Z).

Verification of suitability

Use reference samples with natural or synthetic defects, or leverage known sample structures (wires, spheres) when specifications are limited.
Establish and state the required degree of accuracy, tolerances and limits of detectability.

Consistency checks and system qualification

Inspect reconstruction for artifacts, check CT image scale, review sinograms/projection sequences and system status logs.
Perform component checks (manipulation system, image scale, beam axis perpendicularity, tube focal spot & stability, detector, reconstruction algorithms, visualization tools).
Archive CT images and test parameters to enable reproducibility.

Resolution evaluation methods (examples)

Guidance on acquisition parameters, reference object creation and density resolution measurement methods (high/low energy) and experimental measurement considerations.

Applications - who uses this standard

NDT engineers, CT technicians, QA managers and inspection service providers who need to demonstrate and document CT system suitability.

Industries: aerospace, automotive, additive manufacturing, foundries, power generation, and R&D labs that perform industrial CT for defect detection and dimensional metrology.

CT system manufacturers and integrators for specifying and validating performance against inspection tasks.

Related standards

ISO 15708-1 - terms and definitions (referenced for vocabulary)

ISO 15708-2 - operation and interpretation (referenced for system set‑up and image quality parameters)

Keywords: ISO 15708-4:2017, computed tomography qualification, industrial CT, CT performance parameters, non-destructive testing, defect detectability, dimensional testing, CT system validation.

ISO 15708-4:2017 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications - who uses this standard

Related standards

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