Gas Turbine Stator Vane Potting with Deformable Embedded Component
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Solution Overview
Problem
Current stator assemblies in gas turbine engines face challenges in reducing internal tension and preventing disbonding between the vane and ring components, which can lead to increased stress and potential failure during operation.
Innovation Solution
The proposed stator assembly incorporates a potting component with a potting embedded component, such as a woven or chain-link structure, that is non-metallic and deformable, to reduce internal tension and secure the vane to the ring, using a serpentine shape that contacts both the vane and the slot wall, thereby minimizing direct metal-to-metal contact and enhancing the bonding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a potting component is used to join the vane and ring, then the bonding strength is improved, but internal tension builds up causing disbonding
Solution Approach 1:
A non-metallic, deformable embedded component is introduced as an intermediary element within the potting component. This embedded component acts as a stress-absorbing mediator that reduces internal tension between the vane and ring, preventing disbonding while maintaining the bonding strength provided by the potting material.
Solution Approach 2:
The embedded component is designed with deformable properties and non-metallic characteristics, representing a change in material parameters. This allows the component to undergo deformation under stress, thereby absorbing internal tension and preventing the buildup of damaging forces in the potting component.
2Stability of the object's composition
If rigid bonding is used to secure the vane to the ring, then structural stability is improved, but stress concentration increases leading to potential failure
Solution Approach 1:
The embedded component is designed as a flexible, deformable element within the rigid potting structure. This flexible component absorbs and distributes internal stresses, preventing stress concentration while maintaining the overall structural stability provided by the rigid potting material and assembly configuration.
Solution Approach 2:
The bonding system becomes a composite structure combining the rigid potting component with a deformable embedded component. This composite approach allows the rigid portion to provide structural stability while the deformable portion manages stress, achieving both stability and stress reduction simultaneously.
3Strength
If metal-to-metal contact is used between vane and ring, then mechanical strength is improved, but wear and fatigue increase
Solution Approach 1:
A non-metallic embedded component is introduced as an intermediary between metal surfaces. This intermediary prevents direct metal-to-metal contact, thereby eliminating wear and fatigue issues associated with metallic interfaces while maintaining the mechanical strength through the deformable nature of the non-metallic material that can absorb and distribute loads.
Data Source
AI summary
An improved stator assembly for use in a gas-turbine engine is disclosed. The stator assembly may comprise a vane, an inner diameter (ID) ring, an outer diameter (OD) ring, a vane disposed between the ID ring and the OD ring, a potting component coupling the vane to at least one of the OD ring or the ID ring, and a potting embedded component disposed within the potting component. The potting embedded component may prevent disbond of the potting component during operation of the gas-turbine engine.