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GB/T 7704-2017: [Including 2023XG1] Non-destructive testing -- Practice for residual stress measurement by X-ray
Status: Valid GB/T 7704: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7704-2017 | English | 1089 |
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[Including 2023XG1] Non-destructive testing -- Practice for residual stress measurement by X-ray
| Valid |
GB/T 7704-2017
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| GB/T 7704-2008 | English | 559 |
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Non-destructive testing -- Practice for residual stress measurement by X-Ray
| Obsolete |
GB/T 7704-2008
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| GB/T 7704-1987 | English | 399 |
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Residual stress measurement by X-Ray
| Obsolete |
GB/T 7704-1987
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PDF similar to GB/T 7704-2017
Basic data | Standard ID | GB/T 7704-2017 (GB/T7704-2017) | | Description (Translated English) | [Including 2023XG1] Non-destructive testing -- Practice for residual stress measurement by X-ray | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 19.100 | | Word Count Estimation | 53,561 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-04-01 | | Older Standard (superseded by this standard) | GB/T 7704-2008 | | Regulation (derived from) | National Standard Announcement 2017 No. 26 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 7704-2017: [Including 2023XG1] Non-destructive testing -- Practice for residual stress measurement by X-ray
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Non-destructive testing-Practice for residual stress measurement by X-ray
ICS 19.100
J04
National Standards of People's Republic of China
Replacing GB/T 7704-2008
Nondestructive testing - Determination of X - ray stress
2017-10-14 Published
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and symbols 1
4 stress measurement principle 3
5 determination method 7
6 instruments 16
7 Sample 17
8 Measurement Procedure 20
Report
Evaluation of test results
Appendix A (informative) diffraction peak half-width 28
Appendix B (informative) penetration depth correction 29
Appendix C (Normative) Stress Reference Samples and Equipment Test 30
Appendix D (Informative) Equivalent strength beam method experimentally determined X-ray elastic constant and stress constant K 33
Appendix E (Normative) X-ray stress data processing methods 35
Appendix F (Informative) Experimental determination of X - ray elastic constant XECs 39
Appendix G (Normative) Calculation of principal stress and direction of principal stress 41
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 7704-2008 "Non-destructive testing methods for the determination of X-ray stress."
This standard compared with GB/T 7704-2008 main changes are as follows.
--- Increasing the diffraction peak, diffraction angle, full width at half maximum, residual stress terms such as the definition of an increase of the definition and the symbol table (see Chapter 3);
--- Increased three-dimensional stress analysis (see Chapter 4);
--- Increased bilinear detector roll method (see No. 5);
--- Increasing the principle of various measurement methods (see Chapter 5);
--- Increased the configuration of the instrument and its technical requirements (see Chapter 6);
--- Increasing the material and its material properties (see Chapter 7);
--- Increased determination of measurement results (see Chapter 10);
--- Added Appendix A diffraction peak half-width;
--- Added Appendix B penetration depth correction;
--- Added Appendix C stress reference samples and equipment testing;
--- Added Appendix D isometric beam method experiment determination of X-ray elastic constant and stress constant K;
--- Added Appendix EX ray stress data processing methods;
--- Added Appendix F experimental determination of X-ray elastic constants;
--- Added Appendix G principal stress and principal stress direction calculation;
--- Removed the original Appendix AX ray stress measurement method commonly used (2008 Edition);
--- Removed the original Appendix B to determine the diffraction peak position (see.2008 edition);
--- Removed the original Appendix C error caused by random factors calculation (see.2008 edition);
--- Modify the sample processing (see Chapter 7;.2008 edition Chapter 6);
--- Modify the measurement procedures (see Chapter 8;.2008 edition Chapter 6).
This standard by the National Standardization Technical Committee nondestructive testing (SAC/TC56) and focal point.
This standard was drafted unit. Shanghai Institute of Materials, Handan, China Estelle Stress Technology Co., Ltd., Love Parker test technology (Shanghai) has
Limited company, Institute of Mechanics, Chinese Academy of Sciences, Institute of Materials Engineering, Chinese Academy of Engineering.
The main drafters of this standard. Bar Fat Sea, Lu Kemao, Pan Haibin, Li Zhengyang, Wang Bin, Dou Zuoyong, Chai Ze, Xue Yu, Li Kai.
This standard replaces the standards previously issued as.
--- GB/T 7704-1987, GB/T 7704-2008.
Nondestructive testing - Determination of X - ray 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 residualstress
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 diffractionpeak
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 diffractionangle
2θ
The angle between the extension of the incident X-ray and the diffraction line, that is, the diffraction peak angle.
Note. 2θ 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 azimuthangleofdiffractioncrystalplane
The angle between the normal of the diffraction crystal plane and the normal of the sample surface.
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