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GB/T 21143-2014: Metallic materials -- Unified method of test for determination of quasi-static fracture toughness
Status: Valid GB/T 21143: Evolution and historical versions
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Metallic materials -- Unified method of test for determination of quasi-static fracture toughness
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Metallic materials -- Unified method of test for determination of quasi-static fracture toughness
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Basic data | Standard ID | GB/T 21143-2014 (GB/T21143-2014) | | Description (Translated English) | Metallic materials -- Unified method of test for determination of quasi-static fracture toughness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H22 | | Classification of International Standard | 77.040.10 | | Word Count Estimation | 97,976 | | Date of Issue | 12/5/2014 | | Date of Implementation | 9/1/2015 | | Older Standard (superseded by this standard) | GB/T 21143-2007 | | Quoted Standard | GB/T 8170; GB/T 12160-2002; GB/T 16825.1; GB/T 20832; ASTM E1820-11 | | Adopted Standard | ISO 12135-2002, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards 2014 No. 27 | | 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 fracture toughness of metallic materials even when subjected to quasi-static load, the crack tip opening displacement, test methods J integral and resistance curve. Notched specimen using fatigue pre-crack method, under a slow | GB/T 21143-2014: Metallic materials -- Unified method of test for determination of quasi-static fracture toughness
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Metallic materials-Unified method of test for determination of quasistatic fracture toughness
ICS 77.040.10
H22
National Standards of People's Republic of China
Replacing GB/T 21143-2007
Metal Materials quasi-static fracture toughness
Harmonized test methods
(ISO 12135.2002, MOD)
Issued on. 2014-12-05
2015-09-01 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 2
5 4 General requirements
6 Determination of fracture toughness stable and non-stable crack growth under 22
Determination of 7 δ-Δa and crack initiation toughness δ0.2BL J-Δa stable crack growth resistance curves and under, J0.2BL, δi and Ji 29
8 35 test reports
9 measurement results of numerical rounding 38
Orientation Appendix A (normative) crack plane 39
Appendix B (normative) stress intensity factor and Flexibility relationship 40
Fitting Annex C (normative) crack growth data 44
Determination of Appendix D (Informative Appendix) δi and Ji 45
Example 48 Appendix E (informative) Test report
Annex F (informative) measured in three-point bending test of the biasing displacement q 54
Derivation 58 Appendix G (Informative Appendix) Pop-in Equation
Appendix H (informative) and analytical methods to determine Vp Ap or Up 59
Annex I (informative) unloading compliance method and potential method Guide 61
Appendix J (informative) Load separation guide 77
Annex K (informative) Determination sectional CTOD value 84
Annex L (informative) This standard reg number and ISO 12135.2002 (E) 88 reg number control
Annex M (informative) This standard and ISO 12135.2002 (E) 89 technical differences and their causes
References 91
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 21143-2007 "harmonized test methods for metallic materials quasi-static fracture toughness," and this standard
GB/T 21143-2007 content were compared in terms of the larger changes and additions.
--- J0, δ0, δ and J is calculated;
--- Single Specimen Guide;
--- Rotation correction;
--- Increase in Appendix J "payload separation Guide", Appendix No. subsequent adjustments have been made;
--- Increased by reference.
This standard uses redrafted Law Amendment uses ISO 12135.2002 "harmonized test methods for metallic materials quasi-static fracture toughness" (English
Chinese Version).
This standard and ISO 12135.2002, compared with more adjustment in the structure, are listed in Appendix L of this standard and ISO 12135.2002
List of control clauses.
This standard and ISO 12135.2002 as compared to the presence of the technical differences between the terms of these differences has been involved through its outer margin bits
Opposing vertical single line (_) has been marked, the list given in Annex M corresponding technical differences and their causes.
This standard made the following editorial changes.
--- Remove the foreword to international standards;
--- Instead of using decimal notation ",". ",";
--- Use the "standard" instead of "this International Standard."
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. Iron and Steel Research Institute, Southwest Jiaotong University, Baoshan Iron & Steel Co., Wuhan Iron and Steel Company, metallurgical industry
Information Standards Institute.
Drafters of this standard. Liu Tao, Caili Xun, TESTING AND package Chen, Fang Jian, OCEANOGRAPHY Dong Li.
Previous release of this standard are.
--- GB/T 21143-2007;
--- GB/T 2038-1980, GB/T 2038-1991;
--- GB/T 2358-1980, GB/T 2358-1994.
Metal Materials quasi-static fracture toughness
Harmonized test methods
1 Scope
This standard specifies a uniform fracture toughness of metallic materials when subjected to static loading, crack tip opening displacement, J integral and resistance curve
Test methods. Notched specimens, using pre-fatigue crack method, under a slow increase in the amount of displacement of the conditions tested.
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 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
GB/T 12160-2002 uniaxial extensometer calibration test (GB/T 12160-2002, ISO 9513.1999, IDT)
Inspection and correction tension and (or) pressure testing machine force measuring system. GB/T 16825.1 of static uniaxial testing machines - Part 1
Associate (GB/T 16825.1-2008, ISO 7500-1.2004, IDT)
GB/T 20832 metal material specimen axis relative to the texture of the product identification (GB/T 20832-2007, ISO 3785.2006,
IDT)
Standard Test Method for Determination of fracture toughness ASTME1820-11 (StandardTestMethodforMeasurementof
FractureToughness)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Stress intensity factor stressintensityfactor
For the uniform linear elastic body the size of the elastic stress field.
Note. The stress intensity factor is a force, the specimen size, geometry and function of the crack length is applied.
3.2
CTOD crack-tipopeningdisplacement
In the pre-fatigue crack tip, two surface crack perpendicular to the displacement of the original non-deformed crack plane for.
3.3
J integral J-integral
Around the crack front from one side to the other side surface crack surface area or line integral points to characterize the crack front area of \u200b\u200bstress
- Strain field.
3.4
Stable crack growth stablecrackextension
Under the experimental conditions of displacement controlled displacement remains constant, the amount of crack growth crack propagation stop or stopped.
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