Multi-Material Honeycomb Core for Strength-to-Weight Balance
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Solution Overview
Problem
Honeycomb panels used in aircraft and other platforms have limited mechanical properties due to their hollow cores, which can compromise their structural integrity and performance.
Innovation Solution
A combined material honeycomb core is developed, comprising a plurality of cells formed of multiple materials, including a metallic material and either a second metallic material or a non-metallic material, which are arranged in columns and rows to enhance mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If hollow honeycomb cores are used to reduce weight, then weight is reduced, but mechanical properties are limited
Solution Approach 1:
The patent applies composite materials by combining multiple materials (metallic and non-metallic) within the honeycomb core structure. Each cell contains a mixture of materials that leverage the advantages of each: metallic materials provide strength and stiffness, while non-metallic materials reduce weight. This composite approach resolves the contradiction by achieving both weight reduction and maintained/improved mechanical properties through material synergies rather than relying on hollow structure alone.
2Strength
If multiple materials are combined in honeycomb core, then mechanical properties are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the honeycomb core into individual cells, where each cell can be independently filled with appropriate material combinations. This modular approach allows for standardized manufacturing processes to be applied to each cell unit, then assembled into the complete core structure. The segmentation principle reduces overall manufacturing complexity by breaking down the complex multi-material fabrication into manageable, repeatable unit operations.
Solution Approach 2:
The patent employs parameter changes by varying material composition, cell density, and material distribution ratios to optimize mechanical properties for different application requirements. By adjusting these parameters, the same basic multi-material honeycomb structure can be tailored for specific strength-to-weight ratio requirements, corrosion resistance needs, or thermal properties, thereby managing complexity through parameter optimization rather than structural redesign.
Data Source
AI summary
A combined material honeycomb core and methods of manufacture are presented. The combined material honeycomb core comprises a plurality of cells arranged in columns and rows formed of multiple materials, the multiple materials comprising a metallic material and either a second metallic material or a non-metallic material.