Resilient Ceramic Guidance Member for Wear and Impact Resistance
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Solution Overview
Problem
Existing guidance systems, such as metal and ceramic rings, face issues with wear and fragility under severe mechanical stresses, leading to potential breakage and functional clearance, particularly in high-stress applications like the aerospace industry.
Innovation Solution
A guidance member with separate ceramic elements supported by a resilient material, allowing for deformation and energy absorption, which combines high hardness with elasticity to withstand mechanical stresses and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ceramic rings are used to reduce wear and friction, then wear resistance is improved, but fragility to impacts increases
Solution Approach 1:
The invention uses composite material consisting of ceramic elements embedded in a resilient matrix material. The ceramic particles provide wear resistance and low friction coefficient, while the resilient matrix provides impact absorption and flexibility. This composite structure resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The invention changes the physical state and properties of the material by creating a composite where ceramic particles are distributed within a resilient matrix. This transforms the material from purely rigid ceramic to a composite with both hardness and elasticity, allowing it to withstand both wear and impacts.
2Duration of action of stationary object
If metal rings are used to increase service life, then durability is improved, but seizing problems occur
Solution Approach 1:
The composite material combines ceramic particles with low friction properties and resilient matrix material, creating a surface that resists seizing while maintaining durability. The ceramic-ceramic contact has lower friction and better wear resistance compared to metal-metal contact.
3Manufacturing precision
If rigid ceramic rings are used to provide precise positioning, then positioning accuracy is improved, but functional clearance appears due to wear
Solution Approach 1:
The resilient matrix material allows the composite ring to deform elastically under load, maintaining constant contact pressure and preventing functional clearance. This changes the mechanical behavior from rigid to semi-flexible, allowing the ring to adapt to wear and maintain positioning accuracy.
Solution Approach 2:
The resilient matrix acts as a cushioning element that compensates for wear before functional clearance can develop. The elasticity of the matrix material allows it to deform and maintain contact, preventing the development of clearance that would lead to breakage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a guidance system with low friction and excellent wear resistance, capable of adapting to local stresses and preventing breakage, ensuring reliable operation under severe conditions.
Implementation Method 1
a support having resilience and damping characteristics
Implementation Method 2
a support having resilience and damping characteristics
Implementation Method 3
materials with a low friction coefficient and a good wear-resistance
Data Source
AI summary
Member for the guidance of a movable piece, including at least one surface in friction and sliding contact with a complementary surface of the movable piece, including several separate ceramic elements carried by a support having resilience characteristics, and for example, made of an elastomer.