Powder Slurry Impregnation of Molded Fiber Fabrics by Moving Vibration
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Solution Overview
Problem
Conventional methods for impregnating powders into fiber fabrics, such as those used in ceramic matrix composites, are insufficient in achieving high impregnation rates, especially for fabrics with complex shapes like cubic or large geometries.
Innovation Solution
A powder material impregnation method involving the preparation of a slurry by dispersing powders in a liquid and then burying a molded fabric body in the slurry, with vibration applied using a vibrator moved along the fabric's surface or transmitted through surrounding metal materials, enhancing impregnation efficiency regardless of fabric shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional ultrasonic vibration is applied to a fabric immersed in slurry, then impregnation rate improves for flat plate fabrics, but impregnation rate becomes insufficient for fabrics with large or complicated shapes
Solution Approach 1:
The fabric surface is divided into multiple regions, and multiple vibrators are positioned at different locations to independently vibrate different regions. This segmentation allows each vibrator to effectively treat its local area, solving the problem of insufficient impregnation in large or complicatedly shaped fabrics while maintaining high impregnation rates.
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
This method significantly improves the impregnation rate of powders into fiber bundles, enabling the production of high-performance fiber-reinforced composite materials with uniform powder distribution across complex shapes.
Implementation Method 1
vibrating the slurry by use of a predetermined vibrator
Implementation Method 2
the mixture is vibrated from outside by an ultrasonic vibration exciter
Data Source
AI summary
When a molded fabric body (X) is impregnated with a powder (K) of a predetermined material, there are performed a first step of dispersing the powder (K) in a liquid to prepare a slurry, and a second step of burying the molded fabric body (X) made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator (M). Furthermore, in the second step, the vibrator (M) is moved along a surface of the molded fabric body (X). As a result, it is possible to improve the rate of impregnation of the powder (K) more than that in the conventional cases, irrespective of the shape of the molded fabric body (X).