GB/T 7704-2017Non-destructive testing - Practice for residual stress measurement by X-ray (English PDF)
无损检测 Ｘ射线应力测定方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 14, 2017
Implementation date
April 1, 2018
Scope
GB/T 7704-2017 is the English-translated version of 无损检测 Ｘ射线应力测定方法.
GB/T 7704-2017 is the Chinese standard "Non-destructive testing - Practice for residual stress measurement by X-ray". Its scope clause reads: This standard specifies the X-ray stress measurement principle, terms, symbols, determination methods, equipment, samples, measurement procedures, reports and measurement results Evaluation.
This standard applies to have sufficient crystallinity, at a specific wavelength of X-ray irradiation can be continuous Debye ring of fine grain, non-woven Isotropic polycrystalline material. Its clauses include terms and definitions, symbols.
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Document preview — GB/T 7704-2017
National Standard of the People's Republic of China
- ICS
- 19.100
- Classification
- J 04
- Replacing
- GB/T 7704-2008
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and symbols
- 4 stress measurement principle
- 5 determination method
- 6 instruments
- 7 Sample
- 8 Measurement Procedure
- Appendix A (informative) diffraction peak half-width
- Appendix B (informative) penetration depth correction
- Appendix C (Normative) Stress Reference Samples and Equipment Test
- Appendix E (Normative) X-ray stress data processing methods
- Appendix F (Informative) Experimental determination of X - ray elastic constant XECs
- Appendix G (Normative) Calculation of principal stress and direction of principal stress
1 Scope
This standard specifies the X-ray stress measurement principle, terms, symbols, determination methods, equipment, samples, measurement procedures, reports and measurement results
Evaluation.
This standard applies to have sufficient crystallinity, at a specific wavelength of X-ray irradiation can be continuous Debye ring of fine grain, non-woven
Isotropic polycrystalline material.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
JB/T 9394 X-ray apparatus specifications
3 Terms and definitions, symbols
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.1.1 Residual stress
In the absence of external or external torque under the conditions of the internal components or materials exist and maintain their own balance of macroscopic stress.
3.1.2 Diffraction peak
The distribution curve of X-ray diffraction intensity along the reflection angle under the condition of Bragg's law.
Note. The angle of reflection refers to the angle between the extension of the incident X-ray and the reflection of the X-ray.
3.1.3 Diffraction angle
2theta
The angle between the extension of the incident X-ray and the diffraction line, that is, the diffraction peak angle.
Note. 2theta is also used to refer to an arbitrary reflection angle without reference to diffraction angles.
3.1.4 Full-width fulwidthathalfmaximum; FWHM
The diffraction peak removes the width at 1/2 of the maximum intensity behind the substrate unrelated to the Bragg diffraction.
See Appendix A
3.1.5 Diffraction crystal plane
The angle between the normal of the diffraction crystal plane and the normal of the sample surface.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 37 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 47079-2026Technical specification for the induction heat treatment of rolls
- GB/T 40121-2021Technical product documentation—Representation of product residual stress symbol
- GB/T 38952-2020Non-destructive testing--Testing method for measuring residual stress using bulk wave
- JB/T 13638-2019Steel ball surface strengthening machines
- GB/T 33163-2016Metallic materials - Residual stress - Ultrasonic impact treatment method
- JB/T 12612-2016Inspection methods for properties of coating materials for NC cutting tools
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Editions of GB/T 7704
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7704-2017 | Non-destructive testing - Practice for residual stress measurement by X-ray | current edition | Current |
| GB/T 7704-2008 | Non-destructive testing - Practice for residual stress measurement by X-ray | previous edition | Superseded |
This page sells the current edition, GB/T 7704-2017. Earlier editions are listed for reference only.
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