scholarly journals Creep properties and Damage Mechanisms of 2D-SiCf/SiC Composites Prepared by CVI

2019 ◽  
pp. 450
Author(s):  
WANG Xi ◽  
WANG Ke-Jie ◽  
BAI Hui ◽  
SONG Zhuo-Lin ◽  
WANG Bo ◽  
...  
Keyword(s):  
Damage Mechanisms ◽  
Creep Properties ◽  
Sic Composites

scholarly journals Fatigue Damage of Al/SiC Composites - Macroscopic and Microscopic Analysis

2015 ◽  
Vol 60 (1) ◽  
pp. 101-105 ◽  
Author(s):  
A. Rutecka ◽  
Z.L. Kowalewski ◽  
K. Makowska ◽  
K. Pietrzak ◽  
L. Dietrich
Keyword(s):  
Fatigue Damage ◽  
Microscopic Analysis ◽  
Inelastic Strain ◽  
Damage Parameter ◽  
Fatigue Tests ◽  
Cyclic Plasticity ◽  
Damage Mechanisms ◽  
Before And After ◽  
Fatigue Damage Parameter ◽  
Sic Composites

Abstract The results of comparative examinations of mechanical behaviour during fatigue loads and microstructure assessment before and after fatigue tests were presented. Composites of aluminium matrix and SiC reinforcement manufactured using the KoBo method were investigated. The combinations of two kinds of fatigue damage mechanisms were observed. The first one governed by cyclic plasticity and related to inelastic strain amplitude changes and the second one expressed in a form of ratcheting based on changes in mean inelastic strain. The higher SiC content the less influence of the fatigue damage mechanisms on material behaviour was observed. Attempts have been made to evaluate an appropriate fatigue damage parameter. However, it still needs further improvements.

Characterization of Tensile Damage for 3D-C/SiC Composites by Acoustic Emission

2010 ◽  
Vol 97-101 ◽  
pp. 834-837
Author(s):  
Yan Jun Chang ◽  
Ke Shi Zhang ◽  
Hui Juan Hu ◽  
Gui Qiong Jiao
Keyword(s):  
Acoustic Emission ◽  
Average Frequency ◽  
Relative Energy ◽  
Uniaxial Tensile ◽  
Damage Mechanisms ◽  
Tensile Process ◽  
Relative Stress ◽  
Ae Signal ◽  
Felicity Ratio ◽  
Sic Composites

The various damage mechanisms in 3D-C/SiC composites are identified using acoustic emission (AE) signal parameters, and the Felicity effect is studied on different unloading stress. As a result, the damage mechanisms in 3D-C/SiC composites can be identified successfully by the amplitude, average frequency and relative energy, and there are several damage modes together during uniaxial tensile process. The Kaiser effect is almost absent and the Felicity ratio fluctuates at 0.95 on lower stress stage and drops when the relative stress is above 65%.

Characterization of SiC/SiC composites damage mechanisms using Digital Image Correlation at the tow scale

2015 ◽  
Vol 68 ◽  
pp. 101-109 ◽  
Author(s):  
Fabien Bernachy-Barbe ◽  
Lionel Gélébart ◽  
Michel Bornert ◽  
Jérôme Crépin ◽  
Cédric Sauder
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Image Correlation ◽  
Damage Mechanisms ◽  
Sic Composites

Validity Evaluation of AE Technique on Damage Monitoring of Different Woven C/SiC Composites under Mechanical Loading

2010 ◽  
Vol 118-120 ◽  
pp. 256-260 ◽  
Author(s):  
Jie Zheng ◽  
Lei Jiang Yao ◽  
Xiang Zheng
Keyword(s):  
Mechanical Loading ◽  
Ceramic Matrix Composites ◽  
Parameter Analysis ◽  
Matrix Composites ◽  
Damage Mechanisms ◽  
Damage Initiation ◽  
Sic Ceramic ◽  
Damage Monitoring ◽  
Woven Structures ◽  
Sic Composites

Acoustic emission (AE) technique was utilized for real-time monitoring the damage evolutions of 2-D and 3-D C/SiC ceramic matrix composites (CMC) under mechanical loading. AE signals for damage initiation and propagation were captured by AE equipment during the entire loading process. Different damage mechanisms of the two kinds of C/SiC composites were revealed on the basis of multi-parameter analysis. The experimental results validate the availability of AE technique on damage monitoring of C/SiC composites. And the AE technique can be used to distinguish the slight differences in damage mechanisms during damage evolution owing to different woven structures.

Compressive strength and damage mechanisms of 2D-C/SiC composites at high temperatures

2018 ◽  
Vol 44 (12) ◽  
pp. 14026-14031 ◽  
Author(s):  
Lihua Li ◽  
Chengyu Zhang ◽  
Chen Zhang ◽  
Kejie Wang ◽  
Hui Bai ◽  
...  
Keyword(s):  
Compressive Strength ◽  
High Temperatures ◽  
Damage Mechanisms ◽  
Sic Composites
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