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

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Abstract

The piezoelectric ultrasonic composite oscillator technique (PUCOT) has been used to measure the Young’s modulus, E, the mechanical damping, Q −1, and the strain amplitude, ε, 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 10−4 and was independent of strain amplitude above room temperature.

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Authors and Affiliations

  1. Mechanical Engineering Department, Texas A & M University, 77843-3123, College Station, TX

    A. Wolfenden & C. B. Proffitt

  2. NASA Lewis Research Center, 44135, Cleveland, OH

    M. Singh

Authors
  1. A. Wolfenden
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  2. C. B. Proffitt
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  3. M. Singh
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Wolfenden, A., Proffitt, C.B. & Singh, M. Dynamic elastic modulus and vibration damping behavior of porous silicon carbide ceramics at elevated temperatures. J. of Materi Eng and Perform 8, 598–600 (1999). https://doi.org/10.1007/s11665-999-0015-5

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  • DOI: https://doi.org/10.1007/s11665-999-0015-5

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