简介：
Overview
This article presents an experimental method for measuring geometrical parameters and apparent advancing contact angles in capillary wicking of synthetic and natural fabrics. The method is crucial for determining capillary pressures in liquid composite molding applications.
Key Study Components
Area of Science
- Composite manufacturing
- Capillary pressure measurement
- Liquid composite molding processes
Background
- Understanding fiber capillary pressure is essential for composite design.
- Formation of voids and dry spots in composites can affect performance.
- Standard tensiometers can be utilized for this method.
- Applicable to various types of reinforcement materials.
Purpose of Study
- To assess fiber capillary pressure values for composite molding.
- To provide insights into void formation in large composite parts.
- To demonstrate a reliable method for measuring capillary parameters.
Methods Used
- Cutting fabric strips perpendicular to the grain.
- Rolling fabric strips into tight cylinders.
- Wrapping samples in thin filter paper.
- Using a standard tensiometer for measurements.
Main Results
- Successful measurement of capillary parameters in fabrics.
- Demonstrated method can be applied to various composite reinforcements.
- Provided a framework for assessing capillary pressures in LCM.
- Highlighted the importance of sample preparation in obtaining accurate results.
Conclusions
- The proposed method is effective for measuring capillary wicking.
- It aids in understanding the implications for composite manufacturing.
- Future applications could enhance the design of composite materials.
What is the significance of measuring capillary pressure?
Measuring capillary pressure is crucial for ensuring the quality and integrity of composite materials during manufacturing.
Can this method be used with any type of fabric?
Yes, the method is applicable to various types of synthetic and natural fabrics.
What equipment is needed for this procedure?
A standard tensiometer and basic sample preparation tools are required.
How does this method help in composite manufacturing?
It provides insights into capillary behavior, which is essential for preventing voids and ensuring uniform material properties.
Who conducted this research?
The research was conducted by Monica Francesca Pucci, a Ph.D. student at the George Friedel Laboratory.
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