Ceramic Matrix Composites: Residual Tensile Testing after Intermediate Temperature Oxidation

2015 ◽  
pp. 49-57
Author(s):  
G. Ojard ◽  
I. Smyth ◽  
U. Santhosh ◽  
Y. Gowayed ◽  
D. C. Jarmon
Keyword(s):  
Tensile Testing ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Intermediate Temperature ◽  
Matrix Composites ◽  
Temperature Oxidation

NDE Characterization and Mechanical Behavior in Ceramic Matrix Composites

2006 ◽  
Vol 321-323 ◽  
pp. 946-951 ◽  
Author(s):  
Jeong Guk Kim ◽  
Sung Tae Kwon ◽  
Won Kyung Kim
Keyword(s):  
Mechanical Behavior ◽  
Nondestructive Evaluation ◽  
Tensile Testing ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
In Situ Monitoring ◽  
Matrix Composites ◽  
Ir Camera ◽  
Qualitative Relationship ◽  
Microscopy Characterization

Several nondestructive evaluation (NDE) techniques, including ultrasonic C-scan, X-ray computed tomography (CT), and infrared (IR) thermography, were employed on ceramic matrix composites (CMCs) to illustrate defect information that might effect mechanical behavior and to analyze structural performance of CMCs. Prior to tensile testing, through C-scan and CT analyses results, the qualitative relationship between the relative ultrasonic transmitted amplitude and porosity based on CT was exhibited. An IR camera was used for in-situ monitoring of progressive damages and to determine temperature changes during tensile testing. Moreover, scanning-electron microscopy characterization was used to perform microstructural failure analyses. This paper describes the use of nondestructive evaluation (NDE) techniques to facilitate the understanding of tension behavior of CMCs.

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

2005 ◽  
Vol 297-300 ◽  
pp. 2533-2538 ◽  
Author(s):  
Jeong Guk Kim ◽  
Jong Duk Chung ◽  
Joon Hyun Lee ◽  
Yeon Uk Jeong ◽  
Yong Ki Hong ◽  
...  
Keyword(s):  
Tensile Testing ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
In Situ Monitoring ◽  
Flash Method ◽  
Measured Temperature ◽  
Matrix Composites ◽  
Ir Camera ◽  
Temperature Changes ◽  
Damage Characterization

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. Prior to tensile testing, a UT C-scan and a xenon flash method were performed to obtain initial defect information in light of UT C-scans and thermal diffusivity maps, respectively. An IR camera was used for in-situ monitoring of progressive damages. The IR camera measured temperature changes during tensile testing. This paper has presented the feasibility of using NDE techniques to interpret structural performance of CMCs.

Tensile Testing of Ceramics and Ceramic-Matrix Composites

2004 ◽  
pp. 163-182
Keyword(s):  
Tensile Testing ◽  
Scale Effects ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Ceramic Materials ◽  
Tensile Tests ◽  
Matrix Composites ◽  
Design Strength ◽  
Ambient Temperatures ◽  
Monolithic Ceramics

Abstract This chapter describes the advanced ceramic materials that include both noncomposite, or monolithic, ceramics (for example, oxides, carbides, nitrides, and borides) and ceramic-matrix composites (CMCs). It describes the rationale for use of ceramics and intrinsic limitations of ceramics. The chapter presents four key considerations that must be taken into account when carrying out tensile tests on advanced monolithic ceramics and CMCs. These include effects of flaw type and location on tensile tests, separation of flaw populations, design strength and scale effects, and lifetime predictions and environmental effects. The chapter discusses the advantages, problems, and complications of four basic categories of tensile testing techniques as applied to ceramics and CMCs. These categories are true direct uniaxial tensile tests at ambient temperatures, indirect tensile tests, tests where failure is presumed to result from tensile stresses, and high-temperature tensile tests.

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

2005 ◽  
pp. 2533-2538
Author(s):  
Jeong Guk Kim ◽  
Jong Duk Chung ◽  
Joon Hyun Lee ◽  
Yeon Uk Jeong ◽  
Yong Ki Hong ◽  
...  
Keyword(s):  
Tensile Testing ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Damage Characterization
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