ISO 22605:2020
Refractories — Determination of dynamic Young’s modulus (MOE) at elevated temperatures by impulse excitation of vibration
This document specifies a method for determining the dynamic Young's modulus of rectangular cross-section bars and circular cross-section specimens of refractories by impulse excitation of vibration at elevated temperature. The dynamic Young's modulus is determined using the resonant frequency of the specimen in its flexural mode of vibration.
This document does not address the safety issues associated with its use. It is responsibility of the users of this standard to establish appropriate safety and health practices.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance and use
6 Apparatus
7 Sampling
8 Test specimens
8.1 Specimen geometry
8.2 Specimen dimensions
8.3 Surface finishing of specimens
9 Procedure
9.1 Specimen drying
9.2 Determination of specimen mass and dimension
9.3 Loading of the test specimen
9.4 Determination of the room temperature Young’s modulus
9.5 Determination of fundamental flexural resonant frequency
9.5.1 Method A: Isothermal measurement at pre-set temperature
9.5.2 Method B: Continuous measurement during ramping to test temperature
10 Calculations
11 Test report
Annex A (informative) Factors affecting accuracy of determinations
Annex B (informative) Calculation of Young's modulus at room temperature (according to ISO 12680-1)
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance and use
6 Apparatus
7 Sampling
8 Test specimens
8.1 Specimen geometry
8.2 Specimen dimensions
8.3 Surface finishing of specimens
9 Procedure
9.1 Specimen drying
9.2 Determination of specimen mass and dimension
9.3 Loading of the test specimen
9.4 Determination of the room temperature Young’s modulus
9.5 Determination of fundamental flexural resonant frequency
9.5.1 Method A: Isothermal measurement at pre-set temperature
9.5.2 Method B: Continuous measurement during ramping to test temperature
10 Calculations
11 Test report
Annex A (informative) Factors affecting accuracy of determinations
Annex B (informative) Calculation of Young's modulus at room temperature (according to ISO 12680-1)