Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Roy M. Sullivan"'
Publikováno v:
Ceramics International. 49:18014-18018
Publikováno v:
Journal of the European Ceramic Society. 42:6846-6864
Autor:
Roy M. Sullivan
Publikováno v:
Journal of the European Ceramic Society. 41:557-562
Deal and Grove’s formulation is applied to model the oxidation of the silicon bond coat in environmental barrier coatings. The approach is similar to the author’s previous study, except now the oxidant is assumed to flow through the coating as io
Autor:
Roy M. Sullivan
Publikováno v:
Journal of the European Ceramic Society. 39:5403-5409
The formulation of Deal and Grove for the oxidation of silicon and the growth of a silica layer is revisited to include the effects of a protective coating layer. The linear-parabolic equation of the form x o 2 + A x o = B t is still applicable, but
Publikováno v:
Journal of the European Ceramic Society. 38:4824-4832
Electrical resistivity (ER) measurements are a possible health monitoring technique for CMC components in future aerospace applications. In order to use ER measurements to detect and identify damage, it is necessary to understand how each specific da
Autor:
Roy M. Sullivan
Publikováno v:
Journal of the European Ceramic Society. 36:1885-1892
The stress rupture strength of silicon carbide fiber-reinforced silicon carbide composites with a boron nitride fiber coating decreases with time within the intermediate temperature range of 700 to 950 degree Celsius. Various theories have been propo
Publikováno v:
AIAA Journal. 49:2482-2490
The effect of heating rate and time at temperature on the ply-normal tensile modulus of carbon cloth phenolic is investigated. The results of previous experimental studies reveal that slower heating rates and longer times at temperature result in a h
Autor:
Roy M. Sullivan, Louis J. Ghosn
Publikováno v:
International Journal of Engineering Science. 47:990-1001
Equations for calculating the shear modulus of non-isotropic, open cell foams in the plane perpendicular to the rise direction and in a plane parallel to the rise direction are derived using an elongated Kelvin foam model. This Kelvin foam model is m
Autor:
Jacques C. Cuneo, Pappu L. N. Murthy, Joseph L. Palko, Roy M. Sullivan, John R. Koenig, Subodh K. Mital
Publikováno v:
Journal of Composite Materials. 41:1197-1215
The stress—strain behavior at room temperature and at 1100° C (2000°F) is measured for two carbon fiber-reinforced silicon carbide (C/SiC) composite materials: a two dimensional (2D) plain-weave quasi-isotropic laminate and a 3D angle interlock w
Autor:
Roy M. Sullivan
Publikováno v:
Carbon. 43:275-285
A mathematical theory and an accompanying numerical scheme have been developed for predicting the oxidation behavior of carbon silicon carbide (C/SiC) composite structures. The theory is derived from the mechanics of the flow of ideal gases through a