Results 151 to 160 of about 519 (191)

Ceramic Matrix Composites (CMCs) for Aerospace Applications

2016
Ceramic materials have excellent properties, but are brittle and the strengths are highly variable. Particulate reinforcements give isotropic properties, but only marginal improvement in toughness. Continuous reinforcements improve the ceramic materials both in terms of fracture toughness as well as strength variability.
N. Eswara Prasad, null Anil Kumar, J. Subramanyam   +2 more
openaire   +1 more source

Research on Ceramic Matrix Composites (CMC) for Aerospace Aplications

Advanced Materials Research, 2011
The research on ceramic matrix composites and their applications in aerospace field were discussed in terms of their advantages and features, fabrication methods, domestic and foreign research progress, difficulties and key technologies to be solved, and future development trends and directions.
openaire   +1 more source

Erosion in Gas-Turbine Grade Ceramic Matrix Composites (CMCs)

Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, 2018
Erosion behavior of a large number of gas-turbine grade ceramic matrix composites (CMCs) was assessed using fine to medium grain garnet erodents at velocities of 200 and 300 m/s at ambient temperature. The CMCs used in the current work were comprised of nine different SiC/SiCs, one SiC/C, one C/SiC, one SiC/MAS, and one oxide/oxide.
N. Kedir, C. Gong, L. Sanchez, M. J. Presby, S. Kane, D. C. Faucett, S. R. Choi   +6 more
openaire   +1 more source

Erosion in an MI SiC/SiC Ceramic Matrix Composite (CMC)

Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, 2019
Abstract Erosion phenomenon of ceramic matrix composites (CMCs), attributed to their unique architectural configurations, is markedly different from conventional monolithic ceramic counterparts. Prior to further integration of CMCs into hot-section components of aeroengines subject to erosive environments, their erosion behavior needs to
M. J. Presby, C. Gong, S. Kane, N. Kedir, A. Stanley, D. C. Faucett, S. R. Choi   +6 more
openaire   +1 more source

Stress Redistribution and Notch Sensitivity in Ceramic Matrix Composites (CMCs)

Composites and Functionally Graded Materials, 1997
Abstract A new generation of relatively ‘ductile’ CMCs is being developed that expands the general utility of structural ceramic composites. These new materials rely on inelastic mechanisms such as interface failure, matrix cracking, fiber failure and fiber pullout to redistribute stress away from locations of stress concentration (Evans
Thomas J. Mackin, Mark C. Roberts, David Anderson   +2 more
openaire   +1 more source

Evaluation of Stress Redistribution and Notch Sensitivity in Ceramic Matrix Composites (CMCs)

Composites and Functionally Graded Materials, 1997
Abstract Damage tolerance, which depends upon inelastic mechanisms, is crucial to the general utility of ceramic matrix composites (CMCs). Recent experiments have confirmed several damage mechanisms and revealed that stress redistribution does occur in CMCs.
Mark C. Roberts, Thomas J. Mackin
openaire   +1 more source

Damage Characterization of Ceramic Matrix Composites (CMCs) during Tensile Testing

Key Engineering Materials, 2005
Nondestructive evaluation (NDE) techniques were used for the tensile damage characterization in ceramic matrix composites (CMCs). Ultrasonic testing (UT) and infrared (IR) thermography were employed to assess defects and/or damage evolution before and during mechanical testing.
Jeong Guk Kim, Jong Duk Chung, Joon Hyun Lee, Yeon Uk Jeong, Yong Ki Hong, Won Kyung Kim, Jang Sik Pyun, Dae Sung Bae   +7 more
openaire   +1 more source

Sector Rig Test of a Ceramic Matrix Composite (CMC) Combustor Liner

Volume 2: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Environmental and Regulatory Affairs, 2006
Ceramic Matrix Composite (CMC) combustor liners, due to their high temperature capability, enable the elimination of film cooling present in current metallic liners without increasing the pressure drop in the combustor section of a gas turbine engine. The absence of film cooling and the higher temperature capability of the CMC liner leads to complete ...
Venkat Vedula, Jun Shi, Shiling Liu, David Jarmon   +3 more
openaire   +1 more source

Probabilistic-statistical approach to the mechanical behavior of ceramic matrix composites (CMCs)

Advanced Composite Materials, 1999
The approach to the mechanical behavior of CMCs that is proposed, is based on a statistical-probabilistic description of multiple matrix cracking and fiber failures. It is applied to unidirectional and woven SiC/SiC composites. The predicted stress-strain behaviors were in good agreement with available experimental data.
openaire   +1 more source

Static Mechanical Characterization of Ceramic Matrix Composites (CMCs)

2021
Dragan Adamovic, Fatima Zivic
openaire   +1 more source