Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites

2013 ◽  
Vol 560 ◽  
pp. 372-376 ◽  
Author(s):  
Hui Mei ◽  
Yuyao Sun ◽  
Lidong Zhang ◽  
Hongqin Wang ◽  
Laifei Cheng
Keyword(s):  
Fracture Toughness ◽  
Acoustic Emission ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced

Study on Acoustic Emission Characteristics of Fiber Reinforced Ceramic Matrix Composites

2013 ◽  
Vol 770 ◽  
pp. 202-206 ◽  
Author(s):  
Mei Ning Yang ◽  
Xiao Fei Song ◽  
Bin Lin ◽  
Yang Yang ◽  
Wen Zhen Peng
Keyword(s):  
Acoustic Emission ◽  
Monitoring System ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Emission Characteristics ◽  
Grinding Process ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Machining Quality ◽  
On Line

Through acoustic emission on-line monitoring system, the effective value of acoustic emission is measured, which produces in the grinding of fiber reinforced ceramic matrix composites. The mapping relationship, grinding parameters and the effective value of acoustic emission, is discussed qualitatively. And the influence of different grinding directions on the effective value and spectrum also is studied. These could be significant guidance for controlling the grinding process to improve the machining quality.

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

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