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Significance and Use
This test method is primarily concerned with the room temperature determination of the dynamic moduli of elasticity and rigidity of slender rods or bars composed of homogeneously distributed carbon or graphite particles.
This test method can be adapted for other materials that are elastic in their initial stress-strain behavior, as defined in Test Method E111.
This basic test method can be modified to determine elastic moduli behavior at temperatures from −75°C to +2500°C. Thin graphite rods may be used to project the specimen extremities into ambient temperature conditions to provide resonant frequency detection by the use of transducers as described in 6.1.
1.1 This test method covers the measurement of the fundamental transverse, longitudinal, and torsional frequencies of isotropic and anisotropic carbon and graphite materials. These measured resonant frequencies are used to calculate dynamic elastic moduli for any grain orientations.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C215 Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens
C559 Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles
C885 Test Method for Youngs Modulus of Refractory Shapes by Sonic Resonance
E111 Test Method for Youngs Modulus, Tangent Modulus, and Chord Modulus
ICS Number Code 71.060.10 (Chemical elements)
UNSPSC Code 11101507(Graphite); 12141908(Carbon C)