Composite Laminate Ply Cutting for Fiber Orientation Control
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Solution Overview
Problem
Existing methods for manufacturing fiber-reinforced composite bodies, such as automated tape laying and automated fiber placement, have room for improvement in efficiency and strength enhancement.
Innovation Solution
A method involving the arrangement and cutting of fabric portions to form plies, followed by consolidation with a polymer matrix, which includes steps like cutting, impregnating, and layering to create a laminate stack, utilizing robotic manipulators and tools to enhance precision and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated tape laying and automated fiber placement methods are used, then manufacturing capability is improved, but there is still room for improvement in efficiency and strength enhancement
Solution Approach 1:
The fabric is divided into multiple portions that are arranged and cut into separate plies, allowing each ply to be precisely positioned and oriented. This segmentation enables continuous fiber weaves to be maintained while creating controlled orientations in each layer, improving both manufacturing efficiency and structural strength.
Solution Approach 2:
The fabric portions are arranged and cut into plies before consolidation with the polymer matrix. This preliminary preparation ensures that the fiber orientations and weave continuity are established in advance, allowing the consolidation process to simply impregnate and bond the pre-configured layers, thereby improving manufacturing efficiency.
2Manufacturing precision
If fabric portions are cut and stacked to form plies, then fiber orientation control is improved, but manufacturing complexity increases
Solution Approach 1:
The robotic manipulator performs multiple functions including cutting the fabric, positioning the plies, and consolidating the laminate stack. This multi-functionality reduces the need for separate specialized equipment, thereby managing device complexity while achieving precise fiber orientation control through the cutting and stacking operations.
3Strength
If continuous fiber weaves are maintained, then structural integrity is improved, but material utilization decreases
Solution Approach 1:
The fabric is cut into sections to create plies with specific local orientations tailored to the structural requirements of the composite body. This allows continuous fiber weaves to be maintained within each ply for structural integrity, while the ability to cut and reposition sections optimizes material utilization by directing fibers only where needed in the final structure.
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 method enhances the strength and efficiency of fiber-reinforced composite objects by ensuring continuous fiber weaves and controlled orientations, resulting in improved structural integrity.
Implementation Method 1
a polymer matrix impregnating the first ply and the second ply
Data Source
AI summary
A method is provided for manufacturing an object. This method includes: arranging a first portion of a fabric over a tool; cutting out a section of the first portion of the fabric to provide a first ply, and disposing the first ply on the tool; arranging a second portion of the fabric over the tool; cutting out a section of the second portion of the fabric to provide a second ply, and stacking the second ply on the first ply; and consolidating a laminate stack on the tool to form the object, the laminate stack including the first ply, the second ply and a polymer matrix impregnating the first ply and the second ply.