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Metallic materials -- Determination of residual stress -- Sectioning relaxation strain-gage method
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GB/T 31218-2014
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PDF similar to GB/T 31218-2014
Basic data | Standard ID | GB/T 31218-2014 (GB/T31218-2014) | | Description (Translated English) | Metallic materials -- Determination of residual stress -- Sectioning relaxation strain-gage method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H22 | | Classification of International Standard | 77.040.10 | | Word Count Estimation | 17,167 | | Date of Implementation | 5/1/2015 | | Quoted Standard | GB/T 13992-2010; JJG 623 | | Regulation (derived from) | People's Republic of China Announcement of Newly Approved National Standards 2014 No. 22 | | 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 | | Summary | This Standard specifies the determination of terms and definitions metal surface residual stress, symbols and descriptions, principles, measuring equipment, measurement procedures with full release assay, the test report. This Standard applies to the dete | GB/T 31218-2014: Metallic materials -- Determination of residual stress -- Sectioning relaxation strain-gage method
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Metallic materials. Determination of residual stress. Sectioning relaxation strain-gage method
ICS 77.040.10
H22
National Standards of People's Republic of China
Residual stress determination of metallic materials
Full release Strain
Issued on. 2014-09-30
2015-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Symbols and 1
PRINCIPLE 2
6 devices and strain gauges 2
7 measuring step 3
8 Error Analysis 5
6 9 Measurement Report
Appendix A (informative) resistance strain gauges measuring strain 7
Annex B (informative) resistance strain gage (weld) the three-way residual stress method --- RN cutting method and its amendment procedure 9
References 13
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This standard was drafted. Wuhan Iron and Steel (Group) Corporation, Institute of Metal Research, Shenzhen million test test Equipment Co., Navy
Engineering University.
The main drafters of this standard. IRON Chen Huaining, Yu Li, Xue Huan, Peng Wenjie, Liu Dong, Zhu Hongchuan TRANSACTIONS Zhu Lihong, Hou massive,
Wang selected countries.
Residual stress determination of metallic materials
Full release Strain
1 Scope
This standard specifies the method for the determination of metal release with full surface residual stress of terms and definitions, symbols and descriptions, principles, measurement devices
Equipment, measurement procedures, test report.
This standard applies to the determination of the average macroscopic residual stress in a variety of metal materials volume unit.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 13992-2010 Metal Bonded resistance strain gauges
JJG623 resistance strain gauges
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Strain Release relaxedstrain
Δε
After the specimen is cut due to the release of the original residual stress fields due to strain variation.
4 Symbols and
Symbols and illustrate the criteria used in Table 1.
Table 1 Symbols and
Symbol Description Unit
MPa E modulus of elasticity of the material being tested
Angle β maximum strain and the maximum principal stress, a positive counterclockwise (°)
Δε strain release -
Δε1 strain gage on the gate release strain 1 -
On Δε2 strain gage Strain Release 2 of the gate -
On Δε3 strain gage Strain Release 3 of the gate -
ν Poisson's ratio of the material being tested -
σ1 along the strain gauge direction residual stress MPa
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