CMC-14: Strength Improvement on an Imaginary SiC Fiber of Ideal Diameter and Reduced Internal Defects Estimated from the Weibull Scaling of Tyranno ZMI Fiber(CMC-II: CERAMICS AND CERAMIC MATRIX COMPOSITE)

The Research Institute of Advanced Materials Gas-Generator (AMG), which is a joint effort by the Japan Key Technology Center and 14 firms in Japan, has, since fiscal year 1992, been conducting technological studies on an innovative gas generator that will use 20% less fuel, weigh 50% less, and emit 70% less NOx than the conventional gas generator through the use of advanced materials. Within this project, there is an R&D program for applying ceramic matrix composite (CMC) liners to the combustor, which is a major component of the gas generator. In the course of R&D, continuous SiC fiber-reinforced SiC composite (SiCF/SiC) was selected as the most suitable CMC for the combustor liner because of its thermal stability and formability. An evaluation of the applicability of the SiCF/SiC composite to the combustor liner on the basis of an evaluation of its mechanical properties and stress analysis of a SiCF/SiC combustor liner was carried out, and trial SiCF/SiC combustor liners, the largest of which was 500mm in diameter, were fabricated by the filament winding and PIP (polymer impregnation and pyrolysis) method. Using a SiCF/SiC liner built to the actual dimensions, a non-cooling combustion test was carried out and even when the gas temperature was raised to 1873K at outlet of the liner, no damage was observed after the test. Through our studies we have confirmed the applicability of the selected SiCF/SiC composite as a combustor liner. In this paper, we describe the present state of the R&D of a CMC combustor liner.

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Cyclic loading of a SiC-fiber reinforced ceramic matrix composite reveals damage mechanisms and thermal residual stress state

Composites Part A Applied Science and Manufacturing ◽

10.1016/j.compositesa.2012.06.011 ◽

2013 ◽

Vol 44 ◽

pp. 105-113 ◽

Cited By ~ 70

Author(s):

Konstantinos G. Dassios ◽

Dimitris G. Aggelis ◽

Evangelos Z. Kordatos ◽

Theodore E. Matikas

Keyword(s):

Residual Stress ◽

Stress State ◽

Cyclic Loading ◽

Matrix Composite ◽

Ceramic Matrix Composite ◽

Ceramic Matrix ◽

Thermal Residual Stress ◽

Damage Mechanisms ◽

Residual Stress State ◽

Sic Fiber

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Development of a Combustor Liner Composed of Ceramic Matrix Composite (CMC)

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.2816300 ◽

1999 ◽

Vol 121 (1) ◽

pp. 12-17 ◽

Cited By ~ 9

Author(s):

K. Nishio ◽

K.-I. Igashira ◽

K. Take ◽

T. Suemitsu

Keyword(s):

Matrix Composite ◽

Ceramic Matrix Composite ◽

Ceramic Matrix ◽

Filament Winding ◽

Advanced Materials ◽

Fiscal Year ◽

Gas Temperature ◽

Gas Generator ◽

Sic Fiber ◽

Combustor Liner

The Research Institute of Advanced Materials Gas-Generator (AMG), which is a joint effort by the Japan Key Technology Center and 14 firms in Japan, has, since fiscal year 1992, been conducting technological studies on an innovative gas generator that will use 20 percent less fuel, weigh 50 percent less, and emit 70 percent less NOx than the conventional gas generator through the use of advanced materials. Within this project, there is an R&D program for applying ceramic matrix composite (CMC) liners to the combustor, which is a major component of the gas generator. In the course of R&D, continuous SiC fiber-reinforced SiC composite (SiCF/SiC) was selected as the most suitable CMC for the combustor liner because of its thermal stability and formability. An evaluation of the applicability of the SiCF/SiC composite to the combustor liner on the basis of an evaluation of its mechanical properties and stress analysis of a SiCF/SiC combustor liner was carried out, and trial SiCF/SiC combustor liners, the largest of which was 500-mm in diameter, were fabricated by the filament winding and PIP (polymer impregnation and pyrolysis) method. Using a SiCF/SiC liner built to the actual dimensions, a noncooling combustion test was carried out and even when the gas temperature was raised to 1873K at outlet of the liner, no damage was observed after the test. Through our studies we have confirmed the applicability of the selected SiCF/SiC composite as a combustor liner. In this paper, we describe the present state of the R&D of a CMC combustor liner.

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