Fibre and interfacial properties measured in situ for a 3D woven SiC/SiC-based composite with glass sealant

Multiple Cracking and Tensile Behavior for an Orthogonal 3‐D Woven Si‐Ti‐C‐O Fiber/Si‐Ti‐C‐O Matrix Composite

“…Following matrix cracking saturation, the numerical results agree well with the stress/strain curve in addition to the ultimate tensile strength of the composite according to Curtin's theory 7 and the in situ fiber strength data. 5 The simulated stress/strain curves show a significant stiffness decrease at 70 MPa in comparison with the experimental results, as a result of a rapid increase in transverse crack density from the calculations. Xia et al 19 reported a similar numerical result.…”

“…6, and indicates good agreement with the experimental data. By measuring the fiber fracture mirror size and pull-out length, Davies et al 5 estimated the sliding stress of the present composite using Curtin's theory to be ϭ 4.94 MPa, which is approximately one third of the sliding stress, ϭ 14 MPa, estimated by hysteresis analysis. The difference may be attributed to the stress level at which is estimated, in that the matrix crack density is not saturated for the estimation of by the hysteresis analysis, whereas Curtin's theory can only be utilized following matrix crack saturation.…”

“…The fibers are woven into an orthogonal 3-D structure that has advantages from the points of view of the polymer impregnation and pyrolysis (PIP) processing, and improved delamination resistance and tensile strength. Using these technologies, the composite exhibits excellent tensile strength at room temperature 4,5 and creep strength at elevated temperature. 6 The composite is referred to as "NUSK-CMC" from the initials of the collaborating partners.…”

Mirror Constant for Tyranno® Silicon‐Titanium‐Carbon‐Oxygen Fibers Measured in Situ in a Three‐Dimensional Woven Silicon Carbide/Silicon Carbide Composite

“…The proportion of fibers that failed in these various modes as a function of test condition has been given in Table II. 13,14 Figure 2 illustrates experimental tensile strength data plotted as a function of predicted tensile strength (in terms of A m ). The ratio between predicted and experimental S UTS (i.e., the value of A m ) was determined by finding a linear least-squares fit to the data and constrained to pass through the origin.…”

Twisting Relaxed Tensile Strength and Its Reliability of Si–Ti–C–O (Tyrano) Fiber

“…5) Recently, Si-Ti-C-O ceramics (Tyrano) fibers with high heat resistance in air have been innovated. 6,7) Therefore, a purpose of the present work is to evaluate a fracture stress and a fracture strain in such fibers relaxed twisting using by means of a new type of tensile tester just developed.…”