Ultrasonic Propagating Body for Multi-Directional Wave Detection
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Solution Overview
Problem
Conventional ultrasonic test systems using FBG sensors face challenges in accurately detecting ultrasonic waves due to reception directivity limitations, making it difficult to secure space for sensor placement, especially in complex aircraft structural objects with reinforcement members.
Innovation Solution
An ultrasonic test system that employs an optical fiber sensor and an ultrasonic propagating body to change the traveling direction of ultrasonic waves, allowing the sensor to detect waves from various directions, including perpendicular to its length, by attaching the sensor indirectly on the test target through the propagating body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an FBG sensor is used to receive ultrasonic waves, then detection accuracy is improved, but the sensor can only detect waves propagating in a limited directional range
Solution Approach 1:
The patent introduces an ultrasonic propagating body as an intermediary component between the test target and the FBG sensor. This mediator changes the traveling direction of ultrasonic waves through reflection or refraction, enabling the sensor to detect waves from multiple directions while maintaining its high detection accuracy. The propagating body acts as a directional converter that decouples the sensor's fixed reception direction from the various wave propagation directions in the test target.
2Adaptability or versatility
If many FBG sensors are disposed to detect ultrasonic waves from multiple directions, then detection coverage is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent segments the function of multi-directional detection from the sensor array approach. Instead of using multiple sensors to achieve multi-directional coverage, it segments the wave propagation paths by introducing an ultrasonic propagating body that redirects waves from different directions onto the single sensor's detection axis. This functional segmentation allows one sensor to perform what would traditionally require multiple sensors.
Solution Approach 2:
The patent adds a spatial dimension to the detection system by positioning the ultrasonic propagating body at specific angles and locations. This dimensional arrangement enables the propagating body to intercept ultrasonic waves from various directions and redirect them toward the sensor, effectively expanding the detection coverage without adding more sensors.
3Reliability
If FBG sensors are disposed on aircraft structural objects with reinforcement members, then inspection capability is improved, but available space for sensor placement is reduced
Solution Approach 1:
The ultrasonic propagating body serves as a space-efficient intermediary that allows the FBG sensor to be positioned in locations with limited available space. By redirecting ultrasonic waves from various directions toward the sensor, the propagating body compensates for the restricted placement options imposed by reinforcement members and cables, maintaining full inspection capability despite spatial constraints.
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 approach enhances detection accuracy and flexibility in sensor placement, enabling the detection of ultrasonic waves from multiple directions without the limitations of traditional FBG sensor directivity, particularly in aircraft structural objects with restricted space.
Implementation Method 1
an optical fiber sensor (5) which detects the at least one ultrasonic wave
Implementation Method 2
an ultrasonic propagating body (4) which changes at least one traveling direction of at least one ultrasonic wave which propagates in a test target
Data Source
AI summary
According to one implementation, an ultrasonic test system includes an ultrasonic propagating body and an optical fiber sensor. The ultrasonic propagating body changes at least one traveling direction of at least one ultrasonic wave which propagates in a test target. The optical fiber sensor detects the at least one ultrasonic wave of which the at least one traveling direction has been changed by the ultrasonic propagating body.