Determination of Fiber/Matrix Interface Mechanical Properties in Brittle-Matrix Composites

1990 ◽  
Vol 194 ◽  
Author(s):  
Ronald J. Kerans ◽  
Paul D. Jero ◽  
Triplicane A. Parthasarathy ◽  
Amit Chatterjee
Keyword(s):  
Mechanical Properties ◽  
Ceramic Composites ◽  
Interface Properties ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Intermetallic Matrix ◽  
Fiber Matrix Interface ◽  
Fiber Matrix ◽  
Intermetallic Matrix Composites

AbstractIt has been evident for some time that the mechanical properties of the fiber/matrix interface play an important role in determining the mechanical behavior of ceramic composites (for reviews, see [1], [2], and [3[). Recently there has been a growing interest in the role of the fiber/matrix interface in intermetallic matrix composites. While ceramic and intermetallic composites are certainly very different materials, understanding the behavior of one will provide insight into the other. Furthermore, the basic issues regarding the determination of interface properties are the same. The accuracy of micromechanics models of any composite system is dependent upon the accuracy of all the constituent and interface properties. It is far preferable to measure actual materials constants rather than test-specific quantities. The tests described here are intended to measure the interfacial shear strength (or mode II toughness) and the interfacial tensile strength. The objective of this work is to briefly outline a few of the approaches which are being evaluated for and applied to ceramic composites, and which may be of interest to investigators working in intermetallic composites.

Compatibility of Fe–40Al with various fibers

1990 ◽  
Vol 5 (9) ◽  
pp. 1976-1984 ◽  
Author(s):  
S. L. Draper ◽  
D. J. Gaydosh ◽  
M. V. Nathal ◽  
A. K. Misra
Keyword(s):  
Mechanical Properties ◽  
Reaction Rates ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Intermetallic Matrix ◽  
Heat Treated ◽  
Fiber Matrix Interface ◽  
Intermetallic Matrix Composites ◽  
Thickness Measurements ◽  
Composite Samples

Chemical reaction can occur at the fiber/matrix interface of intermetallic matrix composites, leading to a degradation of mechanical properties. Fe–40Al matrix composites were fabricated using SiC, B, W, Mo-base, and Al2O3 fibers. Composite samples were heat treated up to 1500 K to study the reaction kinetics, and reaction rates were determined from reaction zone thickness measurements. The Al2O3 and W fibers were found to be compatible with the Fe–40Al matrix, while the Mo-based fibers reacted moderately and the B and SiC fibers reacted severely. Experimental results are compared to theoretical thermodynamic predictions.

Evaluation of Mechanical Properties and Comprehensive Modeling of CMC with Stiff and Weak Matrices

2006 ◽  
Vol 45 ◽  
pp. 1435-1443 ◽  
Author(s):  
Dietmar Koch ◽  
Kamen Tushtev ◽  
Jürgen Horvath ◽  
Ralf Knoche ◽  
Georg Grathwohl
Keyword(s):  
Mechanical Properties ◽  
Mechanical Response ◽  
Ceramic Matrix Composites ◽  
High Strength ◽  
Shear Mode ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Strain Behavior ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

The mechanical properties of ceramic matrix composites (CMC) depend on the individual properties of fibers and matrix, the fiber-matrix interface, the microstructure and the orientation of the fibers. The fiber-matrix interface of ceramics with stiff matrices (e.g. CVI-derived SiC/SiC) must be weak enough to allow crack deflection and debonding in order to achieve excellent strength and strain to failure (weak interface composites WIC). This micromechanical behavior has been intensively investigated during the last 20 years. With the development of CMC with weak matrices (weak matrix composites WMC) as e.g. oxide/oxide composites or polymer derived CMC the mechanical response can not be explained anymore by these models as other microstructural mechanisms occur. If the fibers are oriented in loading direction in a tensile test the WMC behave almost linear elastic up to failure and show a high strength. Under shear mode or if the fibers are oriented off axis a significant quasiplastic stress-strain behavior occurs with high strain to failure and low strength. This complex mechanical behavior of WMC will be explained using a finite element (FE) approach. The micromechanical as well as the FE models will be validated and attributed to the different manufacturing routes.

Strength and Interfacial Properties of Ceramic Composites

1986 ◽  
Vol 78 ◽  
Author(s):  
D. B. Narshall
Keyword(s):  
Interfacial Properties ◽  
Ceramic Composites ◽  
Interface Properties ◽  
Matrix Interface ◽  
Direct Measurements ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

ABSTRACTResults of recent micromechanics analyses of the reinforcing influence of frictionally bonded fibers in ceramic composites are summnarized. Direct measurements of the fiber/matrix interface properties are also discussed.

Mechanical properties of fiber/matrix interface in polymer matrix composites

2014 ◽  
Vol 23 (5-6) ◽  
pp. 551-570 ◽  
Author(s):  
Jun Koyanagi ◽  
Shinji Ogihara ◽  
Hayato Nakatani ◽  
Tomonaga Okabe ◽  
Satoru Yoneyama
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Fiber Matrix
Sign in / Sign up

Export Citation Format

Share Document