Fiber Mat Deposition Apparatus for Wind Turbine Blade Manufacturing
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Solution Overview
Problem
The manufacturing of wind turbine blades using composite materials faces challenges with fiber mat deposition, particularly on complex surfaces, leading to buckling and waviness due to the lack of automated control over fiber alignment, resulting in reduced mechanical properties and increased production costs.
Innovation Solution
An apparatus and method for fiber mat deposition that uses independently controlled rollers and a tension compensator to achieve precise fiber alignment and minimize surface imperfections, allowing for automated or semi-automated processes that reduce manual intervention and enhance reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual fiber mat placement is used, then fiber alignment can be adjusted locally, but manufacturing time increases and productivity decreases
Solution Approach 1:
The fiber mat deposition process is segmented into multiple independent roller units that can be controlled separately. Each roller can apply different tensions and speeds to specific regions of the fiber mat, enabling local fiber alignment adjustments while maintaining automated high-speed deposition throughout the entire mat width.
Solution Approach 2:
The roller system employs dynamic control where roller speeds and tensions can be adjusted in real-time during the deposition process. This allows the system to adapt to different fiber mat positions and surface geometries, achieving precise fiber alignment automatically without manual intervention for each local region.
2Productivity
If automated fiber mat deposition is used, then productivity increases, but fiber alignment control deteriorates and buckling occurs
Solution Approach 1:
The system incorporates feedback control mechanisms where sensors monitor fiber mat tension and position in real-time, and this information is fed back to the roller control system. The rollers automatically adjust their speed and tension based on this feedback to maintain optimal fiber alignment and prevent buckling during high-speed automated deposition.
Solution Approach 2:
The roller system changes operational parameters (speed, tension, rotation direction) dynamically during deposition. By varying these parameters across different rollers and over time, the system maintains precise fiber alignment control while operating at high speeds, resolving the contradiction between automation and precision.
3Adaptability or versatility
If fiber mats are deposited on complex curved surfaces, then wind turbine blade manufacturing is enabled, but fiber buckling and waviness increase
Solution Approach 1:
Different rollers are configured with different properties (surface characteristics, tension capabilities, rotation speeds) to handle different regions of the fiber mat. When depositing on complex curved surfaces, specific rollers can be activated or adjusted to provide appropriate local control, ensuring proper fiber laydown quality on various surface geometries without compromising overall deposition speed.
4Manufacturing precision
If independent roller control is implemented, then fiber alignment precision improves, but device complexity increases
Solution Approach 1:
The independent roller units are designed as modular, multi-functional components. Each roller can perform multiple functions (driving the fiber mat forward, applying tension, controlling local alignment, and compensating for surface variations) depending on operational requirements. This universality reduces the need for separate specialized components, thereby limiting the increase in device complexity while maintaining high fiber alignment precision.
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 solution significantly reduces manufacturing time, improves product consistency, and minimizes fiber imperfections, resulting in wind turbine blades with enhanced mechanical properties and reduced production costs.
Implementation Method 1
The first and second rollers are configured for applying traction on the fiber mat to unroll the fiber mat from the reel in the laying direction
Implementation Method 2
the fiber mat tension compensator is configured to adjust a tension in the fiber mat along the transverse direction
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
The present disclosure relates to an apparatus (100) for deposition of a fiber mat (200) on a surface, the apparatus (100) comprising a reel (101) for holding a roll (102) of the fiber mat (200), a first roller (111) at a first transverse position and a second roller (112) at a second transverse position for applying traction on the fiber mat (200), and a fiber mat tension compensator (120) configured to adjust a tension in the fiber mat (200) along a fiber mat transverse direction. The present disclosure also relates to methods for depositing a fiber mat (200) on a surface.