Composite Core Post-Cure Processing with Mandrel Support
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Solution Overview
Problem
The conventional cutting of bulk composite cores is labor-intensive and results in significant waste, with shapes often distorting during the process due to non-uniform cutting forces.
Innovation Solution
A method and system for post-cure processing that involves configuring mandrels with controlled thermal expansion to maintain consistent pressure, wrapping composite material around them, and using a fixture to support the core during cutting, minimizing distortion and waste by enabling efficient cutting of wafers from bulk composite cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cutting methods are used on bulk composite core, then cutting operations can be performed, but the process is labor-intensive and results in significant material waste
Solution Approach 1:
The patent applies preliminary action by pre-configuring mandrels with specific geometries and material properties before the cutting operation. These mandrels are designed to control the deformation behavior of the composite core during cutting, thereby reducing material waste and improving cutting efficiency without requiring extensive post-processing
Solution Approach 2:
The patent introduces mandrels as intermediary elements between the cutting tool and the composite core. These mandrels act as mediators that control the interaction forces during cutting, preventing excessive deformation and material loss while maintaining productive cutting operations
2Ease of operation
If conventional cutting methods are used on bulk composite core, then cutting operations can be performed, but the shapes tend to distort during the process due to non-uniform cutting forces
Solution Approach 1:
The patent applies local quality by designing mandrels with spatially varying properties - different sections of the mandrel have different geometries, materials, or stiffness characteristics tailored to the specific cutting requirements at each location. This localized optimization prevents distortion in critical areas while maintaining ease of operation
Solution Approach 2:
The patent utilizes parameter changes by varying the mandrel properties (such as stiffness, geometry, or material composition) to compensate for non-uniform cutting forces. By adjusting these parameters, the system maintains shape accuracy during cutting operations without complicating the overall process
3Ease of manufacture
If bulk composite core is cut into usable slices, then further milling to final shape can be performed, but the initial cutting results in large amounts of waste
Solution Approach 1:
The patent applies preliminary action by pre-configuring the mandrels to define the final or near-final geometry of the composite core slices. This preliminary shaping reduces the amount of material that needs to be removed during subsequent milling operations, thereby reducing waste while maintaining ease of manufacture
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
This approach reduces labor and waste by ensuring precise cutting with minimal distortion, allowing for high-yield production of quality wafers from bulk composite cores.
Implementation Method 1
configuring mandrels with controlled thermal expansion to maintain consistent pressure
Data Source
AI summary
A method of joining a first bulk composite core and a second bulk composite core by applying an adhesive to a surface network of the first bulk composite core; inserting a plurality of mandrels into a plurality of cell members of the first bulk composite core and a plurality of cell members of the second composite core, thereby aligning the cell members of the first bulk composite core to the cell members of the second bulk composite core; pressing the respective surface networks of the first bulk composite core and the second bulk composite core together with the adhesive located therebetween; and curing the adhesive.