Resin Impregnation Measurement Using Electrostatic Capacitance
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Solution Overview
Problem
Existing resin impregnation measurement systems struggle to accurately determine the impregnation ratio of raw materials in high-pressure resistant containers used for composite material molding, leading to potential low rigidity in molded parts due to insufficient filling.
Innovation Solution
A resin impregnation measurement system comprising parallel first electrodes and intersecting second electrodes, with a measurement controller that switches between them to measure electrostatic capacities across multiple regions, allowing for accurate derivation of impregnation ratios and baking distributions within the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single electrode configuration is used for measurement, then the device complexity is reduced, but the measurement precision of impregnation ratio is insufficient
Solution Approach 1:
The measurement system divides the container into multiple measurement regions by using multiple first electrodes extending in parallel and multiple second electrodes extending in an intersecting direction. This segmentation allows independent measurement of electrostatic capacity in each region, enabling accurate derivation of impregnation ratio distribution throughout the entire container while maintaining a manageable electrode configuration.
2Measurement precision
If multiple measurement regions are monitored simultaneously, then the measurement precision of resin distribution is improved, but the device complexity increases
Solution Approach 1:
The measurement controller sequentially switches between different combinations of first electrodes and second electrodes to measure electrostatic capacities in multiple measurement regions at different time points. This periodic switching allows the system to monitor resin distribution across the entire container by aggregating measurements from multiple regions, achieving comprehensive coverage without requiring all electrodes to be active simultaneously.
3Measurement precision
If electrostatic capacity measurement is used to detect resin filling, then the measurement speed is improved, but the measurement precision of impregnation ratio is insufficient
Solution Approach 1:
The system replaces mechanical sampling or visual inspection methods with electrostatic capacity measurement using electrode pairs. By measuring the electrostatic capacity between first and second electrodes in each measurement region, the system rapidly determines resin presence and impregnation ratio without physical contact with the material, achieving both high measurement precision and fast measurement speed.
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
Enables high-accuracy measurement of impregnation ratios and baking distributions, ensuring complete filling and adequate resin distribution, thereby enhancing the rigidity and quality of molded composite materials.
Implementation Method 1
measure electrostatic capacities of a plurality of measurement regions where the first electrodes are opposite to the second electrodes
Data Source
AI summary
A resin impregnation measurement system includes first electrodes, second electrodes, a measurement controller, and an impregnation ratio deriving unit. The first electrodes extend in parallel. The second electrodes are disposed so as to oppose to the first electrodes across a container and extend in a direction intersecting the first electrodes. The container is configured to be filled with a resin. The measurement controller is configured to sequentially switch between the first electrodes and the second electrodes and measure electrostatic capacities of measurement regions where the first electrodes are opposite to the second electrodes. The impregnation ratio deriving unit is configured to derive an impregnation ratio of the resin to the fiber base material in the container on a basis of a distribution of the electrostatic capacities of the measurement regions.