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GB/T 37780-2019 English PDF

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GB/T 37780-2019: Test method for elastic modulus, shear modulus and Poissons ratio of glass
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Basic data

Standard ID GB/T 37780-2019 (GB/T37780-2019)
Description (Translated English) Test method for elastic modulus, shear modulus and Poissons ratio of glass
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q30
Classification of International Standard 81.040.10
Word Count Estimation 10,160
Date of Issue 2019-08-30
Date of Implementation 2020-07-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 37780-2019: Test method for elastic modulus, shear modulus and Poissons ratio of glass

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(Glass material elastic modulus, shear modulus and Poisson's ratio test method) ICS 81.040.10 Q30 National Standards of People's Republic of China Glass material elastic modulus, shear modulus and Poisson's ratio test method Testmethodforelasticmodulus, shearmodulusandPoisson'sratioofglass Published on.2019-08-30 2020-07-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Building Materials Federation. This standard is under the jurisdiction of the National Building Glass Standardization Technical Committee (SAC/TC255). This standard was drafted. China Building Materials Inspection and Certification Group Co., Ltd., Guangzhou Construction Engineering Quality and Safety Testing Center Co., Ltd. Division, Guizhou Province Building Materials Quality Supervision and Inspection Institute, China Building Materials Science Research Institute, China Building Materials Inspection and Certification Group Qinhuangdao Limited Company, Zhejiang Xixi Glass Co., Ltd., Jiangsu Tiexan Glass Co., Ltd., Fuyao Glass Industry Group Co., Ltd., Dongguan City Jujian Construction Engineering Co., Ltd., Glass Industrial Design and Research Institute. The main drafters of this standard. Bao Yiwang, Wan Detian, Liu Xiaosong, Sun Lisheng, Liu Xiaogen, Huang Jianbin, Zhao Xingyong, Wang Yinmao, Chen Zhixin, Wen Hanping, Cao Zhiqiang, Qiu Yan, Zhu Guoqing, Tian Yuan, Pan Ruina, Ai Fuqiang, Wang Yanping, Yang Yong, Tu Yu. Glass material elastic modulus, shear modulus and Poisson's ratio test method

1 Scope

This standard specifies the terms and definitions for determining the elastic modulus, shear modulus and Poisson's ratio of glass materials at room temperature by pulse excitation. Test principle, test equipment, samples, test procedures, calculations and test reports. This standard applies to glass and glass-ceramic materials.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1216 outer diameter micrometer JC/T 2172 Fine Ceramic Elastic Modulus, Shear Modulus and Poisson's Ratio Test Method Pulse Excitation Method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Dynamic elastic property dynamicelasticproperty The properties of the material's elastic modulus, shear modulus and Poisson's ratio measured by pulse excitation. 3.2 Bending vibration bendingvibration The vibration of the rectangular section beam specimen in the normal direction of the length horizontal plane. 3.3 Torsional vibration torsionvibration The rectangular section beam specimen produces a torsional deformation vibration about its longitudinal axis.

4 Test principle

A pulse excitation is applied to the rectangular section beam specimen to cause free vibration. Obtaining the curvature of the sample by fast Fourier transform The fundamental frequency of the vibration and the fundamental frequency of the torsional vibration, the elastic modulus of the sample is calculated by the fundamental frequency of the bending vibration, and the sample is calculated by the fundamental frequency of the torsional vibration. The shear modulus and Poisson's ratio are calculated from the relationship between the elastic modulus and the shear modulus. Note. Since the fundamental frequency of the vibration of the specimen depends on the size, mass and elastic modulus of the specimen, in the case where the mass and size of the specimen are known, the fundamental frequency can be measured. Calculate the modulus of elasticity. The modulus of elasticity depends on the fundamental frequency of the bending vibration. The shear modulus depends on the torsional vibration frequency. The Poisson's ratio is determined by the elastic modulus and shear of the material. The modulus of change determines that only two of the three are independent.

5 test equipment

5.1 General The test equipment shall meet the requirements of JC/T 2172. The instrument shall be capable of accurately measuring and analyzing the vibration frequency of the sample and obtaining a dynamic bomb.

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