Dynamic elastic modulus and vibration damping behavior of porous silicon carbide ceramics at elevated temperatures

Journal Article · Fri Oct 01 00:00:00 EDT 1999 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1361/105994999770346657· OSTI ID:20000468

Wolfenden, A; Proffitt, C B; Singh, M

The piezoelectric ultrasonic composite oscillator technique (PUCOT) has been used to measure the Young's modulus, E, the mechanical damping, Q{sup {minus}1}, and the strain amplitude, {epsilon}, of a sintered silicon carbide containing pores (Hexoloy-SP). The silicon carbide material used in this study had at least 14 vol% porosity. Young's modulus was found to have a linear temperature dependence from room temperature to 740 C. The damping was near 10{sup {minus}4} and was independent of strain amplitude above room temperature.

• Research Organization: Texas A&M Univ., College Station, TX (US)
• OSTI ID: 20000468
• Journal Information: Journal of Materials Engineering and Performance, Vol. 8, Issue 5; Other Information: PBD: Oct 1999; ISSN 1059-9495
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
YOUNG MODULUS
DAMPING
SILICON CARBIDES
POROSITY
ULTRASONIC TESTING
TEMPERATURE DEPENDENCE
STRAINS