Drive Coil With Monotonic Current Density For In-Situ Bond Testing
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Solution Overview
Problem
Conventional non-destructive testing (NDT) methods for evaluating the integrity of chemical bonds in composite systems are often time-consuming, costly, and not suitable for in-situ testing, particularly in field applications where real-time correction is necessary, and they may interfere with the materials being bonded.
Innovation Solution
A composite system comprising a curable resin with detectable particles and a measurement probe featuring a drive coil with a current density that monotonically increases from the center to the outer edge, allowing for real-time non-destructive testing of bond integrity during the curing process without requiring highly skilled experts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional NDT methods are used to evaluate bond integrity, then measurement precision is improved, but loss of time increases and device complexity increases
Solution Approach 1:
The patent replaces conventional mechanical NDT methods with an electromagnetic sensing system. The drive coil generates an electromagnetic field that induces eddy currents in detectable particles within the composite system, and the sense coil detects changes in this electromagnetic field to evaluate bond integrity. This substitution enables rapid, real-time testing without the time-consuming procedures of conventional methods.
Solution Approach 2:
The patent changes the testing parameters by using electromagnetic field frequency and intensity as the basis for measurement rather than mechanical contact methods. By monitoring the electromagnetic response of detectable particles during curing, the system achieves rapid assessment of bond integrity without requiring lengthy conventional testing procedures.
2Measurement precision
If conventional NDT methods are used, then measurement precision is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The composite system is self-diagnosing through the integration of detectable particles that automatically respond to the electromagnetic field. The system monitors its own curing process and bond integrity without requiring external expert intervention. The detectable particles serve as built-in sensors that provide real-time feedback on the composite system's state.
Solution Approach 2:
The patent replaces complex mechanical NDT equipment requiring expert operation with a simplified electromagnetic sensing system. The drive and sense coils create an automated detection mechanism that is easier to operate and interpret, reducing the need for highly skilled experts while maintaining measurement precision.
3Ease of manufacture
If chemical bonding methods are used, then ease of manufacture is improved, but reliability of bonds worsens
Solution Approach 1:
The patent implements preliminary monitoring during the chemical bonding process by continuously detecting the curing state of the composite system through electromagnetic sensing of detectable particles. This allows real-time verification of bond formation, ensuring reliability is achieved during field assembly without requiring rework or correction after bonding is complete.
Solution Approach 2:
The electromagnetic sensing system provides continuous feedback on the curing process and bond integrity of chemically bonded joints. By monitoring the electromagnetic response of detectable particles, the system ensures that chemical bonds achieve the required reliability while maintaining the ease of field assembly advantage.
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 effective in-situ evaluation of bond integrity, allowing for real-time correction and reducing the need for expert implementation, while being suitable for a wide variety of materials, thus improving the efficiency and reliability of bond assessment in field conditions.
Implementation Method 1
a drive coil having a current density that monotonically increases from the center of the coil to an outer edge of the coil
Implementation Method 2
The measurement probe is capable of detecting the plurality of detectable particles within the composite system
Data Source
AI summary
The invention provides a drive coil and measurement probe comprising the drive coil. The measurement probes can be used, for example, in in-situ, non-destructive testing methods, also provided herein.