Glass Part Texture Reinforcement Layer Fracture Strength
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Solution Overview
Problem
Conventional glass strengthening methods face limitations such as inability to cut, drill, or grind the glass, and the glass may burst due to large temperature differences, necessitating further research in glass strengthening techniques.
Innovation Solution
A glass part with a texture reinforcement layer comprising reinforcement units with hyperbolic or parabolic cross-sections is developed. This layer prevents microcracks from forming stress lines, thereby inhibiting their expansion and improving the actual fracture strength of the glass part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional glass strengthening methods (physical or chemical) are used, then the strength and temperature resistance of glass are improved (3 to 5 times higher than raw glass sheet), but the glass cannot be cut, drilled, or ground after strengthening, and may burst due to large temperature differences
Solution Approach 1:
The patent applies preliminary action by forming the texture reinforcement layer on the glass substrate before any subsequent processing or use. The microlens array structure is pre-formed on the glass surface to provide stress distribution capability, allowing the glass to maintain both high strength and processability. This pre-formed structural feature enables the glass to be subsequently cut, drilled, or ground without compromising the reinforcement effect.
2Strength
If conventional glass strengthening methods are used, then the strength is improved, but the glass may burst due to large temperature differences
Solution Approach 1:
The patent applies parameter changes by modifying the surface structure of the glass through a texture reinforcement layer with microlens arrays. This structural parameter change creates a distributed stress field that accommodates thermal expansion and contraction more uniformly, preventing the concentration of thermal stresses that lead to bursting. The microlens structure acts as a buffer against thermal shock while maintaining mechanical strength.
3Strength
If a texture reinforcement layer with hyperbolic or parabolic cross-section reinforcement units is added, then the actual fracture strength approximates the theoretical fracture strength by preventing microcrack expansion, but the device complexity increases
Solution Approach 1:
The patent applies the porous materials principle by creating a texture reinforcement layer with an array of microlenses that have controlled void spaces between them. This periodic porous structure serves multiple functions: it distributes stress to prevent microcrack propagation, maintains optical transparency, and adds minimal weight. The regular geometric pattern of the microlens array provides structural complexity only where needed for reinforcement, while the overall design remains relatively simple and manufacturable.
Data Source
AI summary
A glass part includes a substrate and a texture reinforcement layer disposed on at least one surface of the substrate. The texture reinforcement layer includes a plurality of reinforcement units. Cross sections of an outer surface of each reinforcement unit in at least a horizontal direction and a vertical direction are in a hyperbolic shape or a parabolic shape.


