Multiaxial Fabric 0° Layer Segmentation
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Solution Overview
Problem
Existing multiaxial fabrics have limited adjustability of mechanical properties due to fiber deflection and bundling issues at high basis weights, which reduces their effectiveness.
Innovation Solution
A multiaxial fabric with at least three thread layers, where two layers are aligned in the 0° direction without intermediate layers, and one layer is angled at more than ±10°, using multifilament reinforcing yarns with no gaps and auxiliary yarns for stability, and optionally incorporating fleece layers and a metal mesh for enhanced properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the basis weight of the thread layer is increased to improve mechanical properties, then the mechanical properties are improved, but fiber deflection and bundling occur causing undulation and waviness that reduce mechanical properties
Solution Approach 1:
The patent divides the 0° direction reinforcement into multiple separate thread layers (at least two thread layers in the 0° direction) rather than using a single heavy layer. This segmentation allows the mechanical properties to be improved through multiple layers while avoiding the fiber deflection and bundling issues that occur in single high-weight layers, as each layer maintains better fiber arrangement stability.
2Strength
If the basis weight is increased to improve mechanical properties, then the compressive strength is improved, but the thread layer becomes wavy and undulatory reducing mechanical properties
Solution Approach 1:
The patent achieves high compressive strength through multiple thread layers in the 0° direction (at least two layers) rather than relying on a single heavy layer. This segmentation prevents the formation of waves and undulations that would occur in a single high-weight layer, maintaining layer flatness while achieving the required compressive strength through the combined effect of multiple layers.
3Stability of the object's composition
If intermediate layers are added between thread layers to prevent fiber bundling, then fiber arrangement is improved, but the structural complexity increases
Solution Approach 1:
The patent removes intermediate layers (fleece layers, random fiber layers) from the structure between the 0° thread layers. Instead of using intermediate layers to prevent fiber bundling, the invention uses multiple directly adjacent thread layers in the 0° direction, which eliminates the need for intermediate layers while maintaining fiber arrangement stability and reducing structural complexity.
Data Source
AI summary
The invention relates to a multiaxial product comprising at least three thread layers, each of the thread layers being formed by multi-filament reinforcing yarns which are arranged within the thread layers so as to be mutually parallel and next to one another so as to be adjacent, at least two thread layers being arranged within the multiaxial product such that said thread layers define a 0° direction within the multiaxial product and the at least one further thread layer being arranged at an angle of more than ±10° with respect to the 0° direction within the multiaxial product, the at least two thread layers in the 0° direction directly following one after the other, based on the relative arrangement of the at least three thread layers within the multiaxial product, without a further layer of multi-filament reinforcing yarns therebetween. The invention also relates to a method for producing the multiaxial product. The invention further relates to a composite produced from the multiaxial product and to a method for producing the composite from the multiaxial product.