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Description of ASTM-C1548 2020ASTM C1548-02-Reapproved2020Active Standard: Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio of Refractory Materials by Impulse Excitation of VibrationASTM C1548Scope 1.1 This test method covers the measurement of the fundamental resonant frequencies for the purpose of calculating the dynamic Young’s modulus, the dynamic shear modulus (also known as the modulus of rigidity), and the dynamic Poisson’s ratio of refractory materials at ambient temperatures. Specimens of these materials possess specific mechanical resonant frequencies, which are determined by the elastic modulus, mass, and geometry of the test specimen. Therefore, the dynamic elastic properties can be computed if the geometry, mass, and mechanical resonant frequencies of a suitable specimen can be measured. The dynamic Young’s modulus is determined using the resonant frequency in the flexural mode of vibration and the dynamic shear modulus is determined using the resonant frequency in the torsional mode of vibration. Poisson’s ratio is computed from the dynamic Young’s modulus and the dynamic shear modulus. 1.2 Although not specifically described herein, this method can also be performed at high temperatures with suitable equipment modifications and appropriate modifications to the calculations to compensate for thermal expansion. 1.3 The values are stated in SI units and are to be regarded as the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Keywords dynamic Poisson’s ratio; dynamic shear modulus; dynamic Young’s modulus; elastic properties; impulse excitation; refractory shapes; ICS Code ICS Number Code 81.080 (Refractories) DOI: 10.1520/C1548-02R20 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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