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2D/3D Oxide/Oxide Ceramic Matrix Composites Life Prediction Methods: Virtual Characterization of Mechanical Properties, and Virtual Testing of Structural Component

[+] Author Affiliations
Frank Abdi, Dan Thompson

Alpha Star Corporation, Long Beach, CA

Paper No. GT2007-28332, pp. 357-365; 9 pages
doi:10.1115/GT2007-28332
From:
  • ASME Turbo Expo 2007: Power for Land, Sea, and Air
  • Volume 1: Turbo Expo 2007
  • Montreal, Canada, May 14–17, 2007
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4790-X | eISBN: 0-7918-3796-3
  • Copyright © 2007 by ASME

abstract

Progressive failure analysis (PFA) method was employed to investigate the material and sub-element performances made of Alumina/Alumina (N720/A) ceramic matrix composites (CMC). A numerical material characterization was performed to derive the composite constituent properties based on the tested in-plane tensile and compressive properties of the 2D CMC. The derived constituent properties were then applied to the simulations of the 2D composite other properties including in-plane shear, inter-laminar shear and tension, in-plane bending and biaxial tension. The 3D composite in-plane and inter-laminar tensile behaviors were also predicted using the constituent properties. Finally, the simulation procedure was applied to the life prediction of a sub-element fabricated from the 2D N720/A CMC. The simulation results agreed well with the Siemens test data, which indicates the constituent properties can account for their realistic behaviors in the N720/A CMC. In addition, simulations also provided detailed information of stress fields, damage development and failure mechanisms involved in each specimen.

Copyright © 2007 by ASME

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