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GB/T 43103-2023 English PDF

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GB/T 43103-2023: Metallic materials - Methods for creep-fatigue damage assessment and life prediction
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Basic data

Standard ID GB/T 43103-2023 (GB/T43103-2023)
Description (Translated English) Metallic materials - Methods for creep-fatigue damage assessment and life prediction
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H22
Classification of International Standard 77.040.10
Word Count Estimation 28,251
Date of Issue 2023-09-07
Date of Implementation 2024-04-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 43103-2023: Metallic materials - Methods for creep-fatigue damage assessment and life prediction


---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.
ICS 77.040.10 CCSH22 National Standards of People's Republic of China Creep-fatigue damage assessment and analysis of metallic materials Life prediction method Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

PrefaceⅠ Introduction II 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Symbols and descriptions 2 5 Principle 4 6 Basic Test 4 6.1 Test requirements 4 6.2 Material property data 4 7 Basic Steps 5 of Creep-Fatigue Damage Assessment Chart 7.1 Creep-fatigue damage scatter 5 7.2 Damage criterion critical line 6 7.3 Creep-fatigue damage assessment Figure 7 8 High Temperature Structural Creep-Fatigue Damage Assessment and Life Prediction Procedure 7 8.1 Basic stress analysis 7 8.2 Steady-state stress-strain analysis 8 8.3 Data processing 8 8.4 High temperature structural creep-fatigue damage assessment 9 8.5 High temperature structural creep-fatigue life prediction 11 Appendix A (informative) Strain energy density dissipation creep-fatigue life prediction model parameter fitting method 14 Appendix B (informative) Derivation of creep damage formula 16 Appendix C (Informative) Inelastic Analysis 18 Appendix D (informative) High-temperature structural creep-fatigue damage assessment and life prediction program application case 20 Reference 23

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the China Iron and Steel Industry Association. This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This document was drafted by. East China University of Science and Technology, China United Heavy-Duty Gas Turbine Technology Co., Ltd., China Machinery Testing Equipment Co., Ltd. Division, Metallurgical Industry Information Standards Research Institute, China University of Petroleum (East China), Tianjin University, Xiamen Special Equipment Inspection and Testing Institute, Shenzhen Wance Test Equipment Co., Ltd., China Aviation Development Hunan Power Machinery Research Institute, China Aviation Development Commercial Aviation Engine Co., Ltd., Nanjing Industrial University, Suzhou Thermal Engineering Research Institute Co., Ltd., China General Nuclear Power Research Institute Co., Ltd., China Nuclear Power Research and Design Institute, China Shipbuilding Industry (Chongqing) Southwest EQUIPMENT INSTITUTE LIMITED. The main drafters of this document. Zhang Xiancheng, Wang Runzi, Shu Guogang, Tu Shandong, Xuan Fuzhen, Dong Li, Jiang Wenchun, Chen Gang, Ma Wei, Hou Huining, Li Wei, Zhang Chengcheng, Tan Jianping, Fu Xibin, Huang Xing, Wang Xiaowei, Li Kaishang, Nie Wenrui, Ma Shuangwei, Xu Huoli, Xia Xianxi, Zeng Fei, Zhu He, Li Yilei, Gong Jianming, Tang Minjin, Zhang Yucai, Lu Chuanyang, Wang Yuwei, Liu Tianzuo, Chen Gang, Hu Hongwei, Gao Yunxiao, Zou Zhijian.

Introduction

In fields such as aviation, energy and electric power, the working environment of high-temperature equipment is becoming increasingly complex. Among them, key hot-end life-limiting components are not only subjected to stable In addition to the constant load of state operation, it usually also bears the alternating load caused by the start and stop of the device and temperature fluctuations. Its service process is accompanied by severe Heavy creep-fatigue loading interaction. Research shows that the life of metal materials under creep-fatigue interaction is much lower than that of single fatigue or Or the material life under creep mechanism. Traditional damage assessment and life prediction methods based on a single mechanism cannot accurately predict creep-fatigue load. Failure cycles of materials under load and service life of components. Therefore, establishing creep-fatigue damage assessment and life prediction methods is an important step to determine the creep-fatigue damage assessment and life prediction methods. The key to the service life of high-temperature equipment under variable fatigue load is of great significance to ensuring the life reliability of high-temperature equipment. Creep-fatigue damage assessment and analysis of metallic materials Life prediction method

1 Scope

This document specifies the principles and basic tests related to creep-fatigue damage assessment and life prediction methods of metallic materials, creep-fatigue damage Basic steps for damage assessment diagrams, high-temperature structural creep-fatigue damage assessment and life prediction procedures. This document is applicable to metal materials without macroscopic defects that are subject to creep-fatigue loads in atmospheric environments and materials with high risk of crack initiation. Temperature structure critical region.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 2039 Uniaxial tensile creep test method for metallic materials GB/T 15248 Axial constant amplitude low cycle fatigue test method for metallic materials GB/T 38822 Creep-fatigue test method for metallic materials

3 Terms and definitions

The terms and definitions defined in GB/T 38822 and the following apply to this document. 3.1 cycle numberofcycle During the loading process, the test control variable strain is the smallest waveform unit that cannot be split repeatedly and changes with the test time. Note. See Figure 1a). 3.2 stressrelaxation At a certain temperature, the stress response gradually decreases with time during the loading strain maintenance period. Note. See Figure 1b). 3.3 hysteresis loop hysteresisloop Stress-strain response curve within one cycle. Note. See Figure 1c). 3.4 half-lifecycle half-lifecycle Half of the material failure cycle. Note. For most metal materials, the half-life cycle is a representative cycle of stable cycles.

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