scholarly journals Characterization and application of a novel low viscosity polysilazane for the manufacture of C- and SiC-fiber reinforced SiCN ceramic matrix composites by PIP process

2019 ◽  
Vol 39 (2-3) ◽  
pp. 212-221 ◽  
Author(s):  
Bernd Mainzer ◽  
Chaorong Lin ◽  
Raouf Jemmali ◽  
Martin Frieß ◽  
Ralf Riedel ◽  
...  
Keyword(s):  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Low Viscosity ◽  
Sic Fiber

scholarly journals Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1633 ◽  
Author(s):  
Longbiao Li
Keyword(s):  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Vibration Damping ◽  
Interface Debonding ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Temperature Dependent ◽  
Fiber Volume ◽  
Sic Fiber ◽  
Peak Value

In this paper, the temperature-dependent vibration damping in C/SiC fiber-reinforced ceramic-matrix composites (CMCs) with different fiber preforms under different vibration frequencies is investigated. A micromechanical temperature-dependent vibration damping model is developed to establish the relationship between composite damping, material properties, internal damage mechanisms, and temperature. The effects of fiber volume, matrix crack spacing, and interface properties on temperature-dependent composite vibration damping of CMCs and interface damage are analyzed. The experimental temperature-dependent composite damping of 2D and 3D C/SiC composites is predicted for different loading frequencies. The damping of the C/SiC composite increases with temperature to the peak value and then decreases with temperature. When the vibration frequency increases from f = 1 to 10 Hz, the peak value of composite damping and corresponding temperature both decrease due to the decrease of interface debonding and slip range, and the damping of 2D C/SiC is much higher than that of 3D C/SiC at temperature range from room temperature to 400 °C. When the fiber volume and interface debonding energy increase, the peak value of composite damping and the corresponding temperature decreases, mainly attributed to the decrease of interface debonding and slip range.

Elevated Temperature Studies of Continuous and Discontinuous Fiber Reinforced Ceramic Matrix Composites

1989 ◽  
Author(s):  
Azar P. Majidi ◽  
Tsu-Wei Chou
Keyword(s):  
Experimental Studies ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Experimental Investigations ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Sic Fiber ◽  
Discontinuous Fiber ◽  
Calcium Aluminosilicate ◽  
The University

This paper reviews the analytical and experimental investigations at the Center for Composite Materials of the University of Delaware on ceramic matrix composites with continuous and discontinuous reinforcements. The focus is on the strength, fracture and creep behaviors of these composites. The experimental studies have been conducted on hot-pressed SiC whisker reinforced alumina and Nicalon SiC fiber reinforced calcium aluminosilicate (CAS) composites.

Preparation and Characterization of SiC/SiC Micro Ceramic Matrix Composites

2014 ◽  
Vol 1058 ◽  
pp. 170-175 ◽  
Author(s):  
Ming Wei Chen ◽  
Hai Peng Qiu ◽  
Jian Jiao ◽  
Xiu Qian Li ◽  
Yu Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Forming Mechanism ◽  
Sic Fiber ◽  
Sic Ceramic ◽  
Polymer Impregnation

SiC continuous fiber reinforced SiC ceramic matrix composites (SiCf/SiC CMCs) and SiC fiber reinforced SiC micro ceramic matrix composites (SiCf/SiC micro-CMCs) were prepared through polymer impregnation pyrolysis (PIP) progress, then the structures, mechanical properties and forming mechanisms of SiCf/SiC CMCs were investigated. Results showed that volume shrinkage of SiC matrix occurred, and pyrolysates with bamboo-like layered structure were attached to the surface of SiC multifilament gradually. Furthermore, the mechanical properties of SiCf/SiC micro-CMCs were consistent with SiCf/SiC CMCs, so the PIP process parameters for the preparation of SiCf/SiC CMC might be optimized primarily through SiCf/SiC micro-CMCs, which could enhance the design and preparation efficiency of SiCf/SiC CMCs obviously.Key word: polymer impregnation pyrolysis progress, micro ceramic matrix composites, forming mechanism

Sign in / Sign up

Export Citation Format

Share Document