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GB/T 30758-2014 English PDF

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GB/T 30758-2014: Refractory products -- Determination of dynamic Young’s modulus (MOE) by impulse excitation of vibration
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Basic data

Standard ID GB/T 30758-2014 (GB/T30758-2014)
Description (Translated English) Refractory products -- Determination of dynamic Young��s modulus (MOE) by impulse excitation of vibration
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q40
Classification of International Standard 81.080
Word Count Estimation 12,150
Date of Issue 6/9/2014
Date of Implementation 12/1/2014
Quoted Standard ISO 5022-1979; ISO 8656-1-1988
Adopted Standard ISO 12680-1-2005, IDT
Regulation (derived from) National Standards Bulletin No. 11 of 2014
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 the strip and by measuring cylindrical refractory products in the sample resonant frequency of the bending vibration state, the Young's modulus of the test face is calculated by the resonant frequency, quality and size of the artic

GB/T 30758-2014: Refractory products -- Determination of dynamic Young’s modulus (MOE) by impulse excitation of vibration


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Refractory products.Determination of dynamic Young's modulus (MOE) by impulse excitation of vibration ICS 81.080 Q40 National Standards of People's Republic of China Test Method for Dynamic Young's modulus Refractories (Pulse excitation method) Refractoryproducts-DeterminationofdynamicYoung'smodulus (MOE) by (ISO 12680-1.2005, IDT) Issued on. 2014-06-09 2014-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the translation method identical with ISO 12680-1.2005 "Refractories Test Method for Dynamic Young's modulus (pulse excitation Law) ", in order to facilitate the use of this standard, the following editorial changes made. --- Adjust the relevant entry sequence, so that the relationship between the text more clearly defined; --- Will merge the contents of 3.11 to 8.1; --- Deleted the information about the excitation device information with reference to the specified 6.1; --- Increase the formula E, J and ET comments. Correspondence between the consistency of the standards of international documents and normative references of the following documents. --- GB/T 10325, shaped refractory products acceptance sampling inspection rules (GB/T 10325-2012, ISO 5022. 1979, NEQ) --- GB/T 17617 refractory raw materials and monolithic refractories sampling (GB/T 17617-1998, neqISO 8656-1. 1988) This standard by the National Standardization Technical Committee Refractories (SAC/TC193) and focal points. This standard was drafted. Sinosteel Luoyang Institute of Refractories Limited. The main drafters of this standard. Song Yanyan, Tan Lihua, Li Yonggang, Liu Yi Ran. Test Method for Dynamic Young's modulus Refractories (Pulse excitation method)

1 Scope

This standard specifies the strip by measuring cylindrical refractory products and samples at the resonance frequency of bending vibration state by co-products Standard Test Method for Young's modulus of the vibration frequency, quality and size calculation. NOTE. Although this standard does not explicitly described, when using appropriate test equipment this method is also applicable to the determination of the Young's modulus temperature. This standard does not require the use of all safety-related matters. Responsibility of the user of this standard to establish appropriate advance personal security bar Cases and determine its limits.

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 any amendments) applies to this document. ISO 5022. 1979 Shaped refractory products - Sampling and acceptance (Shapedrefractoryproducts-Samplingandac- ceptancetesting) ISO 8656-1. 1988 unshaped refractory products and raw material sampling - Part 1. Sampling Plans (Refractoryprod- ucts-Samplingofrawmaterialsandunshapedproducts-Part 1. Samplingscheme)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Modulus of elasticity modulusofelasticity; MOE Below the proportional limit, the material stress and strain ratio. 3.2 Proportional limit proportionallimit Material does not deviate from the ratio of stress to strain (Hooke's law) under the curve, the maximum stress value can afford. 3.3 Homogeneity homogeneous Structure, density, and the same material. Note. Small sample homogeneity requirements made by representative of the overall characteristics of the original bricks, refractory material, as long as the sample sizes larger than the internal particles, crystals, pores Microcracks and large size, the sample is considered to be uniform. 3.4 Isotropic isotropic The elastic properties of the sample in all directions are the same. 3.5 Resonance frequency resonantfrequency The resonance frequency of the sample occurs by bending vibration. Note. The resonance frequency is generally made of an elastic modulus of the sample, the sample size and the quality of decisions in vibration mode, the lowest resonance frequency of the natural frequency of the material.

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