Resin Impregnation Sensor Jig for Composite Stringer Measurement
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Solution Overview
Problem
Existing resin impregnation sensors in composite material molding devices have poor measurement accuracy due to their external placement, making it difficult to determine if fiber base materials are sufficiently impregnated with resin, which can result in parts with low rigidity.
Innovation Solution
A resin impregnation measurement device is introduced, featuring a jig with a resin impregnation sensor disposed on its facing surface, allowing for improved measurement accuracy by detecting the resin impregnation ratio between the fiber base material and the jig, and including a mold release member to prevent resin contact with the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resin impregnation sensor is placed outside the composite material molding device, then the device structure is simple, but the measurement accuracy is poor
Solution Approach 1:
The resin impregnation sensor is merged with the jig to form an integrated measurement device. The sensor is disposed on the facing surface of the jig, which has been formed into an inner surface shape of a protrusion of a stringer. This integration allows the sensor to be positioned at the boundary between the fiber base material and the jig, enabling accurate measurement of resin impregnation while maintaining a relatively simple overall device structure.
2Measurement precision
If the resin impregnation sensor is placed inside the molding device, then the measurement accuracy is improved, but the sensor contacts resin causing damage
Solution Approach 1:
The jig serves as an intermediary between the resin impregnation sensor and the fiber base material. The sensor is disposed on the facing surface of the jig, which is formed into an inner surface shape of a protrusion of a stringer. This intermediary structure allows the sensor to measure resin impregnation at the boundary without direct contact between the sensor and the resin, thereby protecting the sensor from resin damage while maintaining measurement accuracy.
3Reliability
If the sensor remains in the composite material after molding, then the measurement function is continuous, but it causes cracks in the composite material
Solution Approach 1:
The resin impregnation sensor is extracted from the composite material after the molding process is complete. The sensor is disposed on the facing surface of the jig, which allows for easy removal after measurement. This extraction eliminates the sensor from the composite material structure, preventing it from causing cracks or compromising the integrity of the finished product while maintaining measurement functionality during the molding process.
Data Source
AI summary
A resin impregnation measurement device includes a jig and a resin impregnation sensor. The jig is formed into an inner surface shape of a protrusion of a stringer. The jig includes outer surfaces including a facing surface that is to face an inner surface of the protrusion. The resin impregnation sensor is disposed on the facing surface of the jig.