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GB/T 30064-2013: Metallic materials -- Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components
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Metallic materials -- Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components
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GB/T 30064-2013
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Basic data | Standard ID | GB/T 30064-2013 (GB/T30064-2013) | | Description (Translated English) | Metallic materials -- Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H22 | | Classification of International Standard | 77.040.10 | | Word Count Estimation | 51,529 | | Quoted Standard | ISO 12135-2002; BS 7448-1-1991; ASTM E1290-1999 | | Adopted Standard | ISO 27306-2009, IDT | | Regulation (derived from) | National Standards Bulletin No. 25 of 2013 | | 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 a method by taking into account the loss of binding, obtained by the test specimen CTOD (crack tip opening displacement) into component fracture toughness equivalent CTOD. This method is suitable for the use of the stress intensity | GB/T 30064-2013: Metallic materials -- Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components
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Metallic materials. Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components
ICS 77.040.10
H22
National Standards of People's Republic of China
Metallic material fracture assessment of steel components Cracks
Tip opening displacement (CTOD) Fracture Toughness
Binding Loss Correction
(ISO 27306.2009, IDT)
Issued on. 2013-12-17
2014-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Symbols and 3
PRINCIPLE 4
6 6 member
Grade 7 Ⅰ, Ⅱ and Ⅲ grade level evaluation 7
8 equivalent CTOD ratio β 9
Appendix A (Informative Appendix) Ⅱ level assessment Weibull shape parameter m selection step 15
Analysis Weibull shape parameter m Appendix B (Informative Appendix) Ⅲ level assessment identified 17
Annex C (informative) equivalent CTOD ratio β guidelines 22
Annex D (informative) were the equivalent CTOD ratio β fracture assessment example introduction 27
References 45
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses the translation method identical with the international standard ISO 27306.2009 "Steel Metal Materials Fracture Evaluation of crack tip member Zhang
Opening displacement (CTOD) fracture toughness of binding loss correction method. "
This standard made the following editorial changes.
--- "This International Standard" be replaced by "this standard";
--- Deleted international standards foreword.
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, Nanjing University, Tianjin University, Baoshan Iron & Steel Co., Ltd., Offshore
Oil Engineering Co., Ltd.
The main drafters of this standard. IRON Liu Dong, Zhao Jianping, Wang Dongpo, since the Yuan Zheng, Li Da, Fang Jian, Cao.
Metallic material fracture assessment of steel components Cracks
Tip opening displacement (CTOD) Fracture Toughness
Binding Loss Correction
1 Scope
In the assessment of fracture of cracked steel structures, generally assumed fracture toughness specimens breaking capacity and breaking capacity is equal to the member, but
Hypotheses often leads to overly conservative fracture assessment. This is because when subjected to tensile loads the main crack tip member nearby area
Loss due to creep binding domain, compared to fracture due to bending loading conditions in the vicinity of the crack tip toughness specimens
It produces high restraint multiaxial stress state. In recent years, the most widely used in engineering structures of high-strength steel for its relatively high yield (yield
Strength/tensile strength) exhibit restraint losses member of the crack tip is very significant, fracture evaluation urgently need to be amended.
This standard specifies a method by taking into account the loss of binding, obtained by the test specimen CTOD (crack tip opening displacement)
Fracture toughness is converted to equivalent member CTOD. This method is suitable for the use of the stress intensity factors and J-integral concept carried out fracture toughness
Assessment (see Chapter 8).
This standard applies to the crack type defects or ferritic steel fatigue crack caused by unstable fracture, unstable fracture before noticeable
Ductile crack propagation is not included within the scope of this standard.
CTOD fracture toughness of structural steel in accordance with ISO 12135.2002, BS7448-1.1991 or any one ASTME1290-1999
A corresponding program specification prescribed for testing. Cracked Fracture Assessment component generally uses a method approved by the relevant bodies into
Line, such as FAD (failure assessment diagram), this standard does not mention details.
This standard can be used to eliminate overly conservative notion that conservative ideas with the traditional method of fracture mechanics are closely linked. Either through
Fracture toughness of structural steel member accurately assess the unstable fracture of the initial boundaries, it can also be used to reasonably determine the fracture toughness threshold (acceptance
Value), in order to meet the relevant member of the steel material forming performance design requirements.
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 all repair orders) applies to this document.
ISO 12135.2002 quasi-static fracture toughness of metallic materials Uniform Test Method (Metalicmaterials-Unifiedmethod
oftestforthedeterminationofquasistaticfracturetoughness)
BS7448-1.1991 metallic material KIc, critical CTOD and critical J integral Fracture toughness test method (Fractureme-
chanicstoughnesstests-Part 1. MethodfordeterminationofKIc, criticalCTODandcriticalJvalues
ofmetalicmaterials)
ASTME1290-19991) Standard Test Method for crack tip opening displacement (CTOD) fracture toughness testing [StandardTest
MethodforCrack-TipOpeningDisplacement (CTOD) FractureToughnessMeasurement]
1) the step of calculating CTOD in ASTME1290-1999 differs from the ASTME1290-2008. In the new ASTME1290-2008 in to
Out with an ISO 12135.2002 and BS7448-1.1991 standard different methods of calculation CTOD. This standard uses ASTME1290-
1999, specify 12135 ISO .2002, BS7448-1.1991 Similar CTOD calculation.
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