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GB/T 38952-2020: Non-destructive testing--Testing method for measuring residual stress using bulk wave
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38952-2020 | English | 339 |
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Non-destructive testing--Testing method for measuring residual stress using bulk wave
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GB/T 38952-2020
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Basic data | Standard ID | GB/T 38952-2020 (GB/T38952-2020) | | Description (Translated English) | Non-destructive testing--Testing method for measuring residual stress using bulk wave | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 19.100 | | Word Count Estimation | 18,118 | | Date of Issue | 2020-06-02 | | Date of Implementation | 2020-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38952-2020: Non-destructive testing--Testing method for measuring residual stress using bulk wave
---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.
(Nondestructive testing Residual stress ultrasonic body wave testing method)
ICS 19.100
J04
National Standards of People's Republic of China
Nondestructive testing residual stress ultrasonic body wave testing method
bulkwave
2020-06-02 release
2020-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Personnel requirements 1
5 Detection points 1
6 Inspection system 3
7 Calibration of longitudinal and transverse acoustic elastic coefficients 4
8 Testing process 5
9 Calibration of testing instruments 6
10 Preparation of test report 6
Appendix A (Normative Appendix) Method of preparing tensile specimens 7
Appendix B (Normative Appendix) Some basic principles of common residual stress reduction methods 9
Appendix C (Normative Appendix) Calibrator Method 10
Reference 12
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the National Non-destructive Testing Standardization Technical Committee (SAC/TC56).
This standard was drafted by. Beijing Institute of Technology, Shanghai Institute of Materials, Sinosteel Zhengzhou Metal Products Research Institute Co., Ltd., Sichuan Airlines
Tianchangzheng Equipment Manufacturing Co., Ltd., Inner Mongolia First Machinery Group Co., Ltd., and Xi’an Advanced Stress Inspection and Control Technology Co., Ltd.
The main drafters of this standard. Xu Chunguang, Li Zhixiang, Jiang Jiansheng, Zhang Fang, Jiao Jingjun, Li Wenwen, Pan Qinxue, Zhou Shiyuan, Ding Jie, Du Shaofeng,
Hao Juan, Han Lina, Xiao Dingguo, Zheng Senmu, Wang Junqiang, Song Jianfeng, Lu Yuren, Yin Peng, Li Shuangyi, Miao Zhaowei.
Nondestructive testing residual stress ultrasonic body wave testing method
1 Scope
This standard specifies the terms and definitions of residual stress ultrasonic body wave testing, personnel requirements, testing points, testing systems, longitudinal and transverse wave acoustics
Requirements for the calibration of elastic coefficients, testing procedures, calibration of testing instruments and the preparation of testing reports.
This standard applies to the use of ultrasonic body waves to detect residual stress in materials.
2 Normative references
The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 228.1 Tensile test of metallic materials Part 1.Test method at room temperature
GB/T 7232 Terminology of metal heat treatment process
GB/T 7704 Non-destructive testing X-ray stress determination method
GB/T 9445 Qualification and certification of non-destructive testing personnel
GB/T 12604.1 Terminology for non-destructive testing Ultrasonic testing
GB/T 16923 Normalizing and annealing of steel parts
GB/T 18852 Non-destructive testing, ultrasonic inspection, reference test block and method for measuring the sound beam characteristics of contact probes
GB/T 25712 Vibration aging process parameter selection and effect evaluation method
GB/T 32073 Non-destructive testing residual stress ultrasonic critical refraction longitudinal wave detection method
3 Terms and definitions
The terms and definitions defined in GB/T 7232 and GB/T 12604.1 and the following apply to this document.
3.1
Ultrasound bulk wave
A longitudinal wave with a polarization direction parallel to the propagation direction and a transverse wave with a polarization direction perpendicular to the propagation direction.
3.2
Bulk wave probe bulkwaveprobe
Probes capable of generating longitudinal and transverse waves.
4 Personnel requirements
Personnel adopting this standard for testing should be qualified and certified in accordance with GB/T 9445 or the system agreed by the parties to the contract, and
Employers or agents carry out job training and operation authorization.
5 Test points
5.1 Detection principle
According to the stress of the acoustic elasticity in the material and the direction of ultrasonic propagation affects its propagation speed, the compression stress accelerates the ultrasonic propagation speed
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