FRP Panel Surface Pyramid Layout for Wrinkle-Free Fiber Alignment
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Solution Overview
Problem
The existing FRP panel materials with reinforcing fibers oriented in predetermined directions face issues of irregularities in edge positions and surface wrinkles when protrusions or depressions are provided, as the fibers may misalign at the tops or within the protrusions/depressions, leading to uneven fiber extension.
Innovation Solution
The FRP panel material incorporates a surface texture pattern of congruent regular triangular or square pyramids with bases arranged on a virtual reference plane without gaps or overlaps, ensuring each vertex of the pyramid base is shared by multiple bases, and the reinforcing fibers are oriented parallel to the lateral edges of these pyramids, maintaining uniform fiber length and shrinkage rates across the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If protrusions or depressions are provided in the surface of FRP panel material, then surface texture and slip resistance are improved, but irregularities in edge positions and surface wrinkles occur due to fiber misalignment
Solution Approach 1:
The invention applies different properties to different parts of the surface by creating protrusions and depressions with specific geometric characteristics. The key is that the curvature radius at the apex of protrusions and the bottom of depressions is controlled to be 0.05mm to 2mm, which locally modifies the surface geometry to prevent fiber misalignment while maintaining the desired texture pattern.
Solution Approach 2:
The invention changes the geometric parameters of the surface features, specifically controlling the curvature radius at critical points (apex of protrusions and bottom of depressions) within a specific range (0.05mm to 2mm). This parameter control ensures that fibers can smoothly follow the surface contour without abrupt changes in direction, thereby preventing edge irregularities and wrinkles while still providing the desired surface texture for slip resistance.
2Shape
If protrusions or depressions are provided in the surface of FRP panel material, then surface texture is improved, but surface wrinkles occur due to uneven fiber extension
Solution Approach 1:
The invention applies different properties to different parts of the surface by creating protrusions and depressions with specific geometric characteristics. The key is that the curvature radius at the apex of protrusions and the bottom of depressions is controlled to be 0.05mm to 2mm, which locally modifies the surface geometry to prevent fiber misalignment while maintaining the desired texture pattern.
Solution Approach 2:
The invention changes the geometric parameters of the surface features, specifically controlling the curvature radius at critical points (apex of protrusions and bottom of depressions) within a specific range (0.05mm to 2mm). This parameter control ensures that fibers can smoothly follow the surface contour without abrupt changes in direction, thereby preventing edge irregularities and wrinkles while still providing the desired surface texture for slip resistance.
Data Source
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AI summary
An FRP panel material (PM) includes reinforcing fibers (F) oriented in predetermined orientation directions near the surface (E). In the surface (E) of the panel material (PM), a plurality of either or both of protrusions (1) and depressions (2) having shapes of congruent regular triangular pyramids (10) are provided. The bases (11) of the regular triangular pyramids (10) are arranged on a virtual reference plane (R) along the surface (E) with no gap or overlap so that each vertex (13) of an equilateral triangle (12) constituting each base (11) is shared by six of the bases (11) as vertices (13) thereof. Each of the orientation directions of the reinforcing fibers (F) is parallel to any lateral edge (14) of each regular triangular pyramid (10) as seen in the thickness direction of the panel material (PM).