Stator Vane Frustic Load Transmission for CMC Delamination

The patent employs a multi-layer composite structure combining CMC layers with intermediate layers containing reinforcing fibers (such as silicon carbide or carbon fibers) embedded in a matrix material. This composite approach leverages the high temperature resistance of CMC while the intermediate layers with reinforcing fibers provide enhanced interlaminar strength and crack propagation resistance, preventing delamination under thermal loads.

The patent introduces intermediate layers at specific locations between CMC layers where interlaminar bonding is most critical. These intermediate layers have different material properties than the bulk CMC structure, with higher toughness and fiber reinforcement specifically targeted at interfaces to prevent delamination, while the main CMC body maintains its high temperature resistance properties.

The patent creates a composite structure where CMC layers are combined with intermediate layers containing reinforcing fibers. This composite architecture inherently resists thermal distortion through the fiber reinforcement that constrains thermal expansion and prevents delamination, while still allowing for near-net-shape manufacturing processes typical of CMC production.

The patent modifies the material composition and structural parameters of the CMC vane by introducing intermediate layers with different thermal expansion coefficients and mechanical properties. These parameter changes enable the structure to better accommodate thermal stresses during operation without distorting or delaminating, while the manufacturing process parameters can be adjusted to incorporate these layers efficiently.

The patent uses a composite structure with CMC layers combined with intermediate layers containing reinforcing fibers. This design allows the vane to operate under high thermal loads necessary for engine performance while the intermediate layers prevent delamination and crack propagation, thereby extending operational life and improving reliability.

The patent incorporates intermediate layers with reinforcing fibers in advance within the CMC structure before the component is subjected to thermal loads. These pre-positioned intermediate layers act as cushioning elements that prevent delamination and crack propagation when thermal stresses occur during operation, thereby extending operational life without compromising engine performance.