GB/T 42900-2023 English PDF

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GB/T 42900-2023: Metallic materials - High strain rate compression test method at elevated temperature
Status: Valid

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Basic data

Standard ID: GB/T 42900-2023 (GB/T42900-2023)
Description (Translated English): Metallic materials - High strain rate compression test method at elevated temperature
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Classification of International Standard: 77.040.10
Word Count Estimation: 26,269
Date of Issue: 2023-08-06
Date of Implementation: 2024-03-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42900-2023: Metallic materials - High strain rate compression test method at elevated temperature

---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 High strain rate and high temperature compression test method for metallic materials temperature Published on 2023-08-06 2024-03-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

PrefaceⅠ 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 symbols 1 5 Test principle 3 6 Test equipment 3 7 Sample 4 8 Test procedure 5 9 Test data processing 6 10 Evaluation of validity of test results8 11 Test report 8 Appendix A (Normative) Separate Hopkinson Pressure Rod 9 Appendix B (Normative) High-temperature heating control device 11 Appendix C (Normative) Data Test System 12 Appendix D (informative) Correction method for temperature effect 14 Appendix E (informative) Method for determining the starting points of incident waves, reflected waves and transmitted waves 16 Appendix F (informative) High strain rate and high temperature compression test data processing method 17 Appendix G (Informative) High Strain Rate High Temperature Compression Test Example 19 Appendix H (informative) Abnormal examples of high strain rate and high temperature compression testing 21

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. General Engineering Research Institute of China Academy of Engineering Physics, Jiangsu University of Science and Technology, China Machinery Testing Equipment Co., Ltd. Company, Shenzhen Wandian Testing Equipment Co., Ltd., Shandong Iron and Steel Co., Ltd., Metallurgical Industry Information Standards Research Institute, Gangyan Nanok Testing Technology Co., Ltd. The main drafters of this document. Chen Junhong, Hu Wenjun, Shen Chaoming, Ma Shuangwei, Wang Zhongzhong, Huang Xing, Dong Li, Gao Yifei, Guo Lingmei, Chen Wei, Wang Hui, Gao Guangzhou, Zhang Fangju, Hou Huining, Yang Huifeng, Li Chaoyang. High strain rate and high temperature compression test method for metallic materials

1 Scope

This document specifies the principles, test equipment, specimens, test procedures, and test data processing of high-temperature compression tests on metallic materials under high strain rates. management, validity assessment of test results and test reports. This document is applicable to the compressive stress-strain curve of metal materials when the temperature is higher than room temperature and the strain rate range is 102s-1~104s-1. Determination of mechanical properties.

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 228.2 Tensile testing of metallic materials Part 2.High temperature test methods GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without tolerances noted GB/T 2975 Sampling location and specimen preparation for mechanical property testing of steel and steel products GB/T 7314 Room temperature compression test method for metallic materials GB/T 10623 Terminology for mechanical properties testing of metal materials GB/T 13992 Metal adhesive resistance strain gauge GB/T 34108 High strain rate room temperature compression test method for metallic materials JJG623 resistance strain gauge

3 Terms and definitions

The following terms and definitions as defined in GB/T 10623 and GB/T 34108 apply to this document. 3.1 coldcontacttime When the combined heating method is used, the time interval between the waveguide rod contacting the sample and the stress wave reaching the sample/input rod interface.

4 symbols

The symbols and their descriptions in Table 1 apply to this document. Table 1 Symbols and descriptions Symbol unit description Separate Hopkinson Pressure Rod a1 mm distance between the center of the strain gauge on the input rod and the specimen/input rod contact surface a2 mm distance between the center of the strain gauge on the output rod and the specimen/output rod contact surface ......

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