GB/T 34186-2017Refractory products—Determination of dynamic Young’s modulus(MOE)at elevated temperatures by impulse excitation of vibration (English PDF)

1 Scope

This standard specifies the principle, equipment, samples, test procedures and knots of the high temperature dynamic Young's modulus test method (pulse excitation method) for refractories.

Calculations and test reports, etc.

This standard applies to the determination of high temperature dynamic Young's modulus (pulse excitation method) of refractory 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 4513.5 Unshaped refractories - Part 5. Sample preparation and pretreatment

GB/T 7321 shaped refractory product sample preparation method

GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values

GB/T 16839.1 Thermocouple Part 1. Index Table

GB/T 16839.2 Thermocouple Part 2. Tolerance

GB/T 30758 Refractory dynamic Young's modulus test method (pulse excitation method)

3 Terms and definitions

The following terms and definitions as defined in GB/T 30758 apply to this document.

4 Principle

Heat the sample to the test temperature, keep it for the specified time, hit the sample with the impactor, test the bending resonance frequency of the sample, and substitute it.

The formula calculates the dynamic Young's modulus of the sample.

5 Meaning and use

The meaning and purpose are as follows.

a) can be used to evaluate the properties of refractory materials, assist in the study of refractory materials and their quality control;

b) suitable for testing the Young's modulus of a homogeneous refractory;

c) for the dynamic test method, the Young's modulus of the long strip or cylindrical specimen can be tested;