GB/T 7732-2008 English PDF

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GB/T 7732-2008: Metallic materials -- Fracture toughness testing method with surface crack tension specimens
Status: Valid

GB/T 7732: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7732-2008	329	Add to Cart	3 days	Metallic materials -- Fracture toughness testing method with surface crack tension specimens	Valid
GB/T 7732-1987	559	Add to Cart	4 days	Standard test method for surface-crack fracture toughness Kle of metallie plates	Obsolete

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Basic data

Standard ID: GB/T 7732-2008 (GB/T7732-2008)
Description (Translated English): Metallic materials -- Fracture toughness testing method with surface crack tension specimens
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Classification of International Standard: 77.040.10
Word Count Estimation: 14,144
Date of Issue: 2008-05-13
Date of Implementation: 2008-11-01
Older Standard (superseded by this standard): GB/T 7732-1987
Quoted Standard: GB/T 228; GB/T 10623; GB/T 12160; GB/T 16825.1; GB/T 20832
Adopted Standard: ASTM E740-2003, NEQ
Regulation (derived from): National Standard Approval Announcement 2008 No.8 (Total No.121)
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 principles of fracture toughness test method for the determination of a continuous slow increase in the tensile load, terminology, definitions and symbols, test equipment and test procedures, , test results and test reports processed samples. This standard applies to metallic materials with a rectangular cross- section circular or semi- elliptical surface crack tensile specimens.

GB/T 7732-2008: Metallic materials -- Fracture toughness testing method with surface crack tension specimens

---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. Fracture toughness testing method with surface crack tension specimens ICS 77.040.10 H22 National Standards of People's Republic of China Replacing GB/T 7732-1987 Metal material tensile specimen fracture surface crack Toughness Test Method Posted 2008-05-13 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard and ASTME740-03 "fracture toughness test method for surface crack tensile specimens" non-equivalent. This standard replaces GB/T 7732-1987 "metal surface crack fracture toughness test method", and GB/T 7732-1987 in the following Content has been modified and added. --- Changing the name of the standard; --- In the "normative references", by deleting the reference to the original standard GB 6397 "metal tensile test specimens," adds normative references Document GB/T 228 "metallic materials at room temperature tensile test method", GB/T 12160 "uniaxial testing extensometer calibration" Testing - Part 1 GB/T 10623 "metal mechanical test term", GB/T 16825.1 of static uniaxial testing machine. Pull Force and (or) test and calibration of pressure testing machine measuring system and GB/T 20832 "specimen axis relative to the metal material products Texture ID "; --- Increased Chapter 3, "principle"; --- Modify the specific requirements for pre-fatigue crack; --- Modify the specific requirements of the test machine; --- Modified extensometer type, increasing the crack tip opening displacement typical schematic view of a measuring device; --- Modify the test program the test speed; --- Original standard Appendix A title changed to "fatigue crack size and shape control technology"; --- Original criteria in Appendix B of the title changed to "fracture toughness test surface crack stress intensity factor equation." The Standard Annexes A and B are normative appendix Appendix C is informative appendix. The standard proposed by China Iron and Steel Association. This standard by the National Standardization Technical Committee steel. This standard was drafted. Iron and Steel Research Institute, Wuhan Iron and Steel (Group) Company. Drafters of this standard. TESTING AND circumferential ridges and peaks, Wang Chunxu, IRON Qiubao Wen. This standard replaces the standards previously issued as follows. --- GB/T 7732-1987. Specimen fracture toughness test method for metal surface tensile cracks

1 Scope

This standard specifies the principles of fracture toughness test method for determining under continuous slowly increasing tensile load, the terms, definitions and symbols, test Thus, test equipment and test procedures, test results processing and test report. This standard applies to metallic material having a rectangular cross-sectional portion of the circular or semi-elliptical surface crack tension specimens.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 228 metal materials at room temperature tensile test method (GB/T 228-2002, eqv ISO 6892.1998) GB/T 10623 test the mechanical properties of metallic materials terminology (GB/T 10623-2008, ISO 23718.2007, MOD) GB/T 12160 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 16825.1-2002, ISO 7500-1.1999, IDT) GB/T 20832 metal material specimen axis relative to the texture of the product identification (GB/T 20832-2007, ISO 3785.2002, IDT) Principle 3 This test is used to evaluate a surface crack in sheet or plate-like structure similar service in the process of carrying capacity. When service bar Member and the same experimental conditions, surface crack tensile test results can be directly applied in the design. 4 terms, definitions and symbols 4.1 Terms and Definitions GB/T 10623 and specified the following terms and definitions apply to this standard. 4.1.1 The deepest point of the crack front surface distance between the front surface of the specimen. Crack depth is part of the sample thickness. 4.1.2 2 Ba Distance from the front surface of the specimen surface intersecting points between crack front. 4.1.3 σr The maximum tensile load of the sample cross-sectional area ratio of. 4.2 Symbol Symbols, units and names are listed in Table 1. ......

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