Multilayer Strip with Progressive Deposition Angle for Composite Winding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for manufacturing composite material parts with varying lamination angles are costly, difficult to automate, and result in thermomechanical issues due to sudden changes in deposition angles.
Innovation Solution
A multilayer strip with pre-impregnated fibrous layers, where the edges of each layer are aligned or set back to allow for a gradual variation in the deposition angle, eliminating the need for complex machining and enabling automated winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional winding with fixed laying angle is used, then manufacturing process is simple, but lamination angle cannot be satisfied over entire length of shape with varying geometry
Solution Approach 1:
The patent implements a dynamic winding system where the laying angle is continuously varied during the winding process to match the changing geometry of the form. The winding device adjusts the deposition angle in real-time, transforming a static fixed-angle process into a dynamic adaptive process that maintains optimal lamination angle throughout the entire form length.
Solution Approach 2:
The patent changes the laying angle parameter continuously during the winding operation. By modifying the deposition angle as a variable parameter rather than keeping it fixed, the system adapts to the varying geometry of the form, ensuring that the lamination angle remains satisfactory across different sections of the workpiece.
2Manufacturing precision
If multiple separate portions are manufactured and assembled, then satisfactory lamination angle is achieved for each portion, but manufacturing time and cost increase
Solution Approach 1:
The patent virtually segments the winding process into different angular zones without physically separating the manufacturing operations. Each zone corresponds to a specific laying angle range, and the winding device transitions smoothly between zones, achieving the benefits of segmented angle control while maintaining continuous production.
Solution Approach 2:
The patent merges multiple winding operations with different laying angles into a single continuous winding process. Instead of manufacturing separate portions and assembling them, the system combines all angular variations in one uninterrupted winding operation, eliminating assembly time and improving productivity.
3Manufacturing precision
If machining operations are performed to change deposition angle, then lamination angle is corrected, but process complexity and cost increase
Solution Approach 1:
The patent performs the laying angle adjustment during the initial winding process itself, rather than requiring subsequent machining operations. By establishing the correct angular orientation at the time of deposition, the system eliminates the need for later corrective machining, simplifying the overall manufacturing process.
4Ease of manufacture
If sudden change in deposition angle is implemented, then manufacturing is simplified, but thermomechanical behavior becomes problematic at interface
Solution Approach 1:
The patent implements a dynamic transition of the laying angle that varies continuously rather than abruptly. This dynamic approach creates a gradual ramp effect where the angle changes smoothly over a transition zone, eliminating sudden discontinuities that would cause thermomechanical problems while maintaining manufacturing efficiency.
Solution Approach 2:
The patent anticipates potential thermomechanical issues by implementing a gradual angle transition zone before the main structural sections. This transition zone acts as a cushion that absorbs and distributes stresses, preventing concentrated stress points at sharp angle changes and ensuring reliable thermomechanical behavior.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a multilayer strip (1a; 1b; 1c) intended to be wound onto a form, comprising pre-impregnated fibrous layers (10, 20, 30) superimposed along a stacking direction (E), each layer extending in width along a transverse direction (T) perpendicular to the stacking direction between a first (11, 21, 31) and a second (12, 22, 32) edge, characterized in that on at least a part of said multilayer strip the first edges of the pre-impregnated fibrous layers are aligned with each other in the stacking direction, and each second edge is set back from the second edge of the underlying layer along the transverse direction.