Standard Test Method for Moduli of Elasticity and Fundamental Frequencies of Carbon and Graphite Materials by Sonic Resonance

Importancia y uso:

5.1 This test method may be used for material development, characterization, design data generation, and quality control purposes.

5.2 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.

5.3 This test method can be adapted for other materials that are elastic in their initial stress-strain behavior, as defined in Test Method E111.

5.4 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 7.1.

Subcomité:

D02.F0

Referida por:

C0783-85R20, D8356-20, D8255-19, C0885-87R20, C0781-20, C0769-15R20E01, D6354-23, C1198-20, E1875-20A, D7775-21, C1259-21

Volúmen:

05.05

Número ICS:

71.060.10 (Chemical elements)

Palabras clave:

bar; beam; cylindrical rod; disc; dynamic; elastic modulus; elastic properties; flexure; graphite; impulse; Poisson’s ratio; resonance; resonant beam; shear modulus; torsion; Young’s modulus Parameters and Characteristics of the Two Graphite Grades Used in this ILS Grade Forming Method Source Coke Grain Size (µm) Ash Content (wppm) Density (g/cm³) Graphite A iso-static molded petroleum 20 <10 1.77 Graphite B vibration molded coal 300 <10 1.85 ;