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GB/T 38822-2020 English PDF

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GB/T 38822-2020: Metallic materials--Creep-fatigue test method
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 38822-2020	English	339	Add to Cart	4 days [Need to translate]	Metallic materials--Creep-fatigue test method	Valid	GB/T 38822-2020

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Basic data

Standard ID	GB/T 38822-2020 (GB/T38822-2020)
Description (Translated English)	Metallic materials--Creep-fatigue test method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H22
Classification of International Standard	77.040.10
Word Count Estimation	18,174
Date of Issue	2020-06-02
Date of Implementation	2020-12-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 38822-2020: Metallic materials--Creep-fatigue test 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.
(Creep-fatigue test method for metallic materials) ICS 77.040.10 H22 National Standards of People's Republic of China Creep-fatigue test method for metallic materials 2020-06-02 release 2020-12-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbols and instructions 2 5 Test principle 3 6 Equipment 4 7 Sample 6 8 Test procedure 10 9 Test report 13 Appendix A (Informative Appendix) Creep-Fatigue Life Function Relationship 14 Reference 15

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This standard was drafted by. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, East China University of Science and Technology, Institute of Metal Research, Chinese Academy of Sciences, Shanghai Development Electrical Equipment Complete Design Institute Co., Ltd., Metallurgical Industry Information Standards Institute, Shanghai Customs Industrial Products and Raw Materials Testing Technology Xin, Shanghai Jiaotong University, Shanghai Aviation Material Structure Inspection Co., Ltd. The main drafters of this standard. Zhou Bomou, Wang Runzi, Lu Yanling, Qiu Jianke, Shi Kexian, Dong Li, Zhou Yedong, Wu Yiwen, Tian Genqi, Zhang Xiancheng, Li Dehui, Dong Anping, Tu Shandong, Hou Huining.

Introduction

Mechanical components working in a high-temperature environment may produce creep damage and fatigue damage at the same time, and there are creep and fatigue during the design service period The component of labor damage should consider the interaction of two types of damage, namely creep-fatigue interaction. In certain industrial fields (such as nuclear power, aviation, Mechanical Engineering), studying the long-term creep-fatigue properties of materials is very important for engineering research and applications. In order to clarify the reliability and consistency of test data in different laboratories, it is necessary to carry out test data compliance with certain key points of this standard collect. Creep-fatigue test method for metallic materials

1 Scope

This standard specifies the terms and definitions, symbols and instructions, test principles, test equipment, test specimens, and methods of the creep-fatigue test method for metallic materials. Test procedures, test records and test reports. This standard is applicable to uniaxial creep-fatigue tests under the conditions of constant stress amplitude and constant strain amplitude of smooth circular cross-section specimens.

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB/T 12160 Calibration of Extensometer System for Metal Material Uniaxial Test GB/T 16825.1 Inspection of static uniaxial testing machine Part 1.Inspection and testing of tensile and/or compression testing machine force measurement system calibration GB/T 22315 Test method for elastic modulus and Poisson's ratio of metallic materials GB/T 25917.1 Uniaxial Fatigue Test System Part 1.Dynamic Force Calibration GB/T 26077 Axial strain control method for fatigue test of metallic materials GB/T 34104 metal material testing machine loading coaxiality test JJF1637 Low-cost metal thermocouple calibration specification JJG141 precious metal thermocouple for work JJG556 Axial Forced Fatigue Testing Machine JJG617 digital temperature indication regulator

3 Terms and definitions

The terms and definitions defined in GB/T 26077 and the following apply to this document. 3.1 Hold time τh In the creep-fatigue test, the test control variables (force, strain) remain unchanged for a period of time. The loading time is usually At the peak of the force and strain of extension and/or compression, but can also be located at other positions within the cycle. 3.2 Total cyclic period τt The time to complete a test cycle. Note. τt is the sum of the load holding time (τh) and the non-load holding time (τnh) (that is, steady state and dynamic). 3.3 Crack formation crackformation The process of crack initiation and propagation in the specimen.

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