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GB/T 37166-2018Non-destructive testing—Test method of composite materials for industrial computed tomography (CT) (English PDF)

无损检测复合材料工业计算机层析成像（CT）检测方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

July 1, 2019

Scope

GB/T 37166-2018 is the English-translated version of 无损检测复合材料工业计算机层析成像（CT）检测方法.

GB/T 37166-2018 sets out how to inspect composite materials with industrial computed tomography (CT). It applies to resin, ceramic and metal matrix composites, both to measure density distribution and material uniformity and to detect defects such as pores, cracks, inclusions, delamination, folds and wrinkles.

It covers the general requirements for personnel, testing and control rooms and radiation protection, the configuration of the CT system chosen according to the size, weight, composition and expected defects of the part, the detection process, the evaluation of results and the test record and report.

Annexes give a model inspection process card and reference CT images of composite defects. It is used by laboratories and manufacturers inspecting composite parts. The standard was issued on 28 December 2018 and has applied since 1 July 2019.

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Document preview — GB/T 37166-2018

National Standard of the People's Republic of China

ICS: 19.100
Classification: J 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 General requirements
5 Industrial CT System Requirements
6 Detection process
7 Test and evaluation
8 Test records and reports
Appendix A (informative appendix) Composite parts industrial CT inspection process card
Appendix B (Normative Appendix) Composite Defects Industrial CT Image

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the general requirements for computer tomography (CT) testing of composite X-ray industry, industrial CT system requirements, inspection Measurement process, test assessment, test record and report.

This standard is applicable to the detection of density distribution and material uniformity of composite materials such as resin base, ceramic base and metal base, and pores (pores) and cracks.

Detection of defects such as lines, inclusions, delamination, folding and wrinkles.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 29034 Non-Destructive Testing Industrial Computer Tomography (CT) Guide

GB/T 29067 Non-destructive testing industrial computer tomography (CT) image measuring method

GB/T 29068 Non-destructive testing industrial computer tomography (CT) system selection guide

GB/T 29069 Non-destructive testing industrial computer tomography (CT) system performance test method

GB/T 29070 Non-destructive testing industrial computer tomography (CT) testing general requirements

GB/T 34365 Non-destructive testing terminology industrial computer tomography (CT) detection

GB/T 35839 Non-destructive testing industrial computer tomography (CT) density measurement method

GB/T 37158 Non-destructive testing industrial computer tomography (CT) testing method

3 Terms and definitions

The terms and definitions defined in GB/T 34365 apply to this document.

4 General requirements

The requirements for the inspection personnel, testing room, control room and radiation protection safety shall comply with the relevant provisions of GB/T 29070.

5 Industrial CT system requirements

5.1 Basic requirements

5.1.1 The subsystems of the industrial CT system are configured in accordance with the requirements of GB/T 29068.

5.1.2 Before selecting an industrial CT system, the characteristics of the composite material to be inspected, such as geometric size, quality, material composition, and defect status, should be analyzed.

The characteristics of the composite material examined determine the parameters of the mechanical scanning system, the ray source system, and the detection system in the industrial CT system. For example, The maximum weight and maximum diameter of the composite material determine the parameter range of the object to be inspected by the industrial CT system, and the defect status of the composite material to be inspected Different or different testing requirements may also lead to large differences in industrial CT systems.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 34365

Cited by

GB/T 42401-2023Laser cladding repairing—Quality levels for imperfections

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