GB/T 31218-2014 English PDF

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GB/T 31218-2014	150	Add to Cart	Auto, < 3 mins	Metallic materials -- Determination of residual stress -- Sectioning relaxation strain-gage method	Valid

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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

---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.
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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