Effective testing of ceramic matrix composites (CMCs) and CMC/coating systems for high temperature, stress, velocity and/or severe oxidation/corrosion environments is a critical need in materials/coatings evaluation extreme hot section parts jet engine hypersonic applications. Most current technology can evaluate two or three the conditions given application; however, incorporating as many ther...

Infrared thermography (IRT) and acoustic emission (AE) are the two major nondestructive methodologies for evaluating damage in ceramic matrix composites (CMCs) for aerospace applications. The two techniques are applied herein to assess and monitor damage formation and evolution in a SiC-fiber reinforced CMC loaded under cyclic and fatigue loading. The paper explains how IRT and AE can be used f...

In situ synchrotron X-ray computed micro-tomography and digital volume correlation (DVC) were utilised to understand the failure mechanisms at room temperature 1050 °C of two Nextel™720/alumina oxide-oxide ceramic-matrix composites (CMCs), termed materials A B, sintered respectively 1200 ~1250 °C. At both test temperatures, three-point-bending strengths ~55–58 MPa for material ~94–100 B. Damage...

Ceramic matrix composites (CMCs) are currently being considered for applications in the hot-section components of aviation gas turbines owing to their favorable characteristics. Herein, a micromechanical modeling is presented orthogonal 3 D woven CMCs under in-plane loading. The three-dimensional effective compliance composite was derived using laminate theory and continuum damage mechanics. va...

Ceramic matrix materials have attracted great attention from researchers and industry due to their material properties. When used in engineering systems, especially aero-engine applications, they can result reduced weight, higher temperature capability, and/or cooling needs, each of which increases efficiency. This is where high-temperature ceramics made considerable progress, ceramic composite...

In this paper, the fatigue damage and lifetime of 2D SiC/SiC ceramic-matrix composites (CMCs) under cyclic fatigue loading at 750, 1000, 1100, 1200 and 1300 °C in air and in steam atmosphere have been investigated. The damage evolution versus applied cycles of 2D SiC/SiC composites were analyzed using fatigue hysteresis dissipated energy, fatigue hysteresis modulus, fatigue peak strain and inte...

Carbon-based nanomaterials mainly including carbon nanotubes (CNTs), graphene, and graphene oxide (GO) have superior properties of low density, outstanding strength, high hardness. Compared with ceramic reinforcements, small amount carbon-based can significantly improve the mechanical metal matrix composites (MMCs) (CMCs). However, CNTs graphite always aggregate or degrade during fabrication a ...

Woven ceramic matrix composites (CMCs), exhibiting excellent thermomechanical properties at high temperatures, are promising as alternative materials to the conventional nickel-based superalloys in hot section components of aero-engines. Therefore, understanding and predicting lifetime CMCs is critical. Fatigue prediction woven currently involves long-term costly testing. A feasible use predict...

There are many sets of information in the literature (e.g., papers, books and websites) about great achievements that expected for aerospace gas turbine engines by employment ceramic matrix composites (CMCs) thermally sprayed environmental barrier coatings (EBCs) their hot zones combustion chambers, vanes, shrouds, blades afterburners). Among these achievements, it is typically highlighted (i) ...