Ultrasonic Probe Orientation Control for Inspection Accuracy
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Solution Overview
Problem
Current techniques inadequately detect damage, such as crack formations and delamination, in structures like aircraft, which can lead to structural degradation and catastrophic failure.
Innovation Solution
An ultrasonic inspection system comprising a robotic device, an ultrasonic inspection probe, an angle sensor subsystem, and a controller, which maintains the probe's proper orientation using articulation and liquid couplant to accurately detect structural abnormalities by moving the probe across the surface while adjusting for irregularities and maintaining a consistent signal transmission medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection methods are used, then flexibility in inspection is maintained, but inspection accuracy and consistency deteriorate
Solution Approach 1:
The robotic inspection system performs self-positioning and self-orientation through automated control algorithms that continuously adjust the probe's position and angle based on real-time feedback from sensors and pre-programmed inspection paths, eliminating the need for manual intervention while maintaining high inspection accuracy
Solution Approach 2:
The patent replaces manual mechanical inspection operations with an automated robotic system that uses computer-controlled mechanisms, sensors, and software algorithms to perform inspection tasks, thereby improving accuracy and consistency while reducing human involvement
2Productivity
If the probe moves quickly across the surface, then inspection speed is improved, but orientation control and detection accuracy deteriorate
Solution Approach 1:
The robotic system implements periodic adjustment cycles where the probe rapidly moves to the next inspection point and then performs quick orientation corrections using articulated mechanisms, creating a rhythm of fast movement followed by precise positioning that maintains both speed and accuracy
Solution Approach 2:
The system uses real-time feedback from angle sensors and position encoders to continuously monitor and adjust the probe's orientation during movement, allowing the system to maintain accurate detection angles even at high inspection speeds through dynamic correction
3Measurement precision
If the probe is pressed firmly against the surface, then signal transmission is improved, but leakage and contamination increase
Solution Approach 1:
The patent employs a pneumatic or hydraulic actuator that applies controlled, uniform pressure to the probe, ensuring adequate contact force for signal transmission while preventing excessive pressure that would cause liquid couplant leakage through the probe seal
Solution Approach 2:
The system dynamically adjusts the contact pressure parameter based on surface conditions and inspection requirements, using feedback from force sensors to maintain optimal pressure levels that ensure good signal transmission without exceeding the threshold that would cause couplant leakage
4Measurement precision
If the probe orientation is continuously adjusted, then detection accuracy is improved, but system complexity and response time deteriorate
Solution Approach 1:
The patent implements a dynamic articulation system with multiple adjustable degrees of freedom that can adapt the probe's orientation in real-time to match the surface geometry, using automated control algorithms that calculate and execute the necessary angular adjustments based on pre-programmed inspection paths and real-time surface feedback
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
Enhances the accuracy and speed of ultrasonic inspections by maintaining the probe's orientation and engagement, reducing leakage, and providing precise structural characteristic data for damage detection, thereby improving the reliability of detecting cracks and other abnormalities.
Implementation Method 1
An ultrasonic array is housed within an ultrasonic inspection probe. A liquid couplant is disposed between the ultrasonic array and a component surface interface of the probe.
Implementation Method 2
A liquid couplant is disposed between the ultrasonic array and a component surface interface of the probe
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
As described herein, a system for inspecting a component includes an ultrasonic inspection probe with a component surface interface, and a robotic device with an end effector coupled to the ultrasonic inspection probe. The robotic device is automatably controllable to move the ultrasonic inspection probe across a surface of the component. Additionally, the system includes an angle sensor subsystem coupled between the ultrasonic inspection probe and the end effector. The angle sensor subsystem is configured to operably detect an actual orientation of the end effector relative to a presently inspected portion of the surface of the component. The system includes a controller configured to receive orientation data from the angle sensor subsystem, the orientation data comprising the actual orientation of the end effector, compare the actual orientation to a desired orientation, and control the robotic device to adjust an orientation of the end effector to be in the desired orientation.