Visual Fiber Orientation Marking for Composite Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Determining the orientation of fibers in composite materials is challenging due to obscured or fine fibers, leading to difficulties in accurately cutting and forming parts that maintain structural integrity, especially when pre-existing references are removed or destroyed during processing.
Innovation Solution
A method involving the use of pre-existing indicators on composite stock panels to apply corresponding fiber orientation marks on selected portions, allowing for accurate determination and marking of fiber orientation before separation, using processes like printing, engraving, or burning, which can be referenced during cutting and further operations to ensure optimal orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ultrasonic or laser imaging is used to detect fiber orientation, then fiber orientation can be detected, but time consumption increases and specialized equipment is required
Solution Approach 1:
The patent applies preliminary action by pre-marking the fiber orientation on the composite panel before cutting. The marking is done during the panel fabrication process, so when a workpiece is later cut from the panel, the fiber orientation mark is already present on the workpiece, eliminating the need for time-consuming detection processes.
Solution Approach 2:
The patent uses copying by transferring the fiber orientation information from the panel-level marking to the workpiece-level marking. The mark on the workpiece is a copy of the orientation information that was originally marked on the entire panel, making the information accessible without specialized detection equipment.
2Loss of information
If fiber orientation is marked on the entire stock panel, then orientation information is available, but the mark is lost when the selected portion is separated from the panel
Solution Approach 1:
The patent applies segmentation by dividing the marking process into two stages: first marking the entire panel with fiber orientation information, then applying additional marks specifically on the selected workpiece portions after cutting. This ensures that each workpiece carries its own orientation information independent of the original panel marks.
Solution Approach 2:
The patent uses preliminary action by pre-determining which portions of the panel will be cut into workpieces, then applying the fiber orientation marks to those specific portions during or after the cutting process, ensuring the marks remain with the workpieces.
3Shape
If the composite has an opaque layer of resin or paint, then the surface appears uniform, but fiber orientation becomes obscured and difficult to determine
Solution Approach 1:
The patent introduces an intermediary solution by applying a visual mark that indicates fiber orientation without requiring direct visualization of the fibers themselves. The mark serves as an intermediary carrier of orientation information that is visible through or on the opaque surface, bypassing the obscuration problem.
Solution Approach 2:
The patent replaces the mechanical/visual inspection method (directly seeing fibers) with a marking system that conveys orientation information through applied marks. This substitution eliminates the need for fiber visibility while maintaining accurate orientation determination.
Data Source
AI summary
A method for determining and indicating the orientation of fibers in a selected portion to be removed from a composite stock panel. The method may include determining the orientation of fibers in a composite stock panel based on a pre-existing indicator carried by the stock panel, and applying a fiber orientation indicating mark to at least part of a selected stock panel portion that is to be separated from the stock panel and from the pre-existing indicator, the fiber orientation indicating mark corresponding to the orientation of the pre-existing indicator.