RF Radiation Characterization System for Composite Materials
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a lack of effective non-destructive evaluation methods for real-time characterization of composite materials during and after manufacturing, particularly in overlay processes, which hinders the detection of defects and ensures the quality of composite parts.
Innovation Solution
An active real-time characterization system utilizing multiple RF sources and receivers to generate and process linear, second harmonic, sum-frequency, and third-order spectroscopic signals, allowing for real-time comparison with baseline signals to ensure the article under test conforms to expected values, thereby identifying defects and ensuring quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional non-destructive evaluation methods are used for composite materials, then manufacturing simplicity is maintained, but real-time characterization capability is lost
Solution Approach 1:
The patent replaces traditional mechanical or contact-based non-destructive evaluation methods with a radio-frequency radiation-based system. The RF sources emit electromagnetic radiation that interacts with the composite material, and receivers detect the reflected or transmitted signals, enabling real-time characterization without physical contact or complex mechanical setups.
Solution Approach 2:
The system integrates multiple RF sources operating at different frequencies and multiple receivers to perform various types of measurements simultaneously. This multi-functional approach allows the single system to characterize different properties of composite materials (such as fiber orientation, resin content, and structural integrity) using one unified platform, thereby managing complexity through consolidation rather than proliferation of separate devices.
2Reliability
If real-time monitoring of composite chemistry is implemented, then defect detection capability is improved, but system complexity increases
Solution Approach 1:
The patent employs radio-frequency spectroscopy to monitor composite chemistry in real-time, replacing complex chemical analysis instruments with an RF-based detection system. The RF sources and receivers measure the dielectric properties and chemical composition of the composite materials during manufacturing, providing defect detection capability through electromagnetic interaction rather than mechanical or chemical means.
3Measurement precision
If multiple RF sources and receivers are used for comprehensive characterization, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system uses multiple RF sources operating at different frequencies and multiple receivers to gather comprehensive data about the composite material's properties. Each RF source-receiver pair contributes to different aspects of characterization, and the combined data provides enhanced measurement precision. The multi-functional design allows one system to perform what would otherwise require multiple separate measurement devices.
Solution Approach 2:
The patent varies the frequency parameters of the RF sources to probe different properties of the composite material. By changing the frequency of the RF radiation, the system can selectively interact with different components or features of the composite, thereby improving characterization accuracy through parameter variation rather than simply adding more identical components.
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 system enables accurate real-time monitoring of composite parts' chemistry, preventing defects and ensuring production quality by halting or repairing defective parts, thus reducing waste and costly rework.
Implementation Method 1
A first RF source outputs a first beam of RF radiation at a first pre-determined frequency... the processor may be configured to calculate in real time a linear spectroscopic signal
Implementation Method 2
A second RF source may output a second beam of RF radiation at a second pre-determined frequency... A second harmonic generation RF receiver may be configured to receive a second predetermined return beam of RF radiation... calculate in real time a second harmonic generation spectroscopic signal
Implementation Method 3
A sum frequency RF receiver may be configured to receive a third return beam of RF radiation from the particular area on the article under test... calculate in real time a sum-frequency spectroscopic signal
Implementation Method 4
A third RF source may output a third beam of RF radiation at a third pre-determined frequency... A third order RF receiver may be configured to receive a fourth return beam of RF radiation... calculate in real time a third order spectroscopic signal
Data Source
AI summary
A system for providing active real-time characterization of an article under test is disclosed. First, second and third RF radiation sources each outputs and directs a beam of RF radiation at a particular area on the article under test. An RF receiver and a second harmonic generation RF receiver, a sum frequency receiver, and a third order receiver are each configured to receive a respective predetermined return beam of RF radiation from the particular area on the article under test. A processor receives signals from the receivers and calculates in real time respective spectroscopic signals and compares each calculated signal with each other calculated signal and with a predetermined baseline signal to ensure that the article under test conforms to an expected value.