Automated Ultrasonic Bond Testing for Composite Materials
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Solution Overview
Problem
Existing non-destructive testing methods for composite materials, such as those used in aerospace and vehicles, face challenges in accurately detecting defects like delamination and disbonding without compromising the structural integrity of the materials and are inefficient for large-area scanning.
Innovation Solution
An automated bond testing system that uses a sensor to send and receive ultrasonic signal waveforms, with a computer comparing the received signals to a library of known waveforms to identify defects and display results in color-coded images, while an automated scanning platform moves the sensor in a predetermined motion to ensure consistent data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection methods are used, then operational simplicity is maintained, but inspection efficiency and coverage area are insufficient
Solution Approach 1:
The inspection system performs automated scanning and analysis without requiring manual operation. The sensor assembly automatically moves across the composite material surface, and the system self-processes the ultrasonic signals to detect defects, eliminating the need for manual inspection while maintaining operational simplicity through automation.
Solution Approach 2:
The patent replaces manual mechanical inspection with an automated sensor-based system. The sensor assembly electronically detects defects through ultrasonic waves, and the computer system automatically analyzes the data, substituting manual mechanical operations with electronic and computational processes to improve efficiency.
2Productivity
If scanning speed is increased to cover large areas, then productivity improves, but data consistency and measurement precision deteriorate
Solution Approach 1:
The sensor assembly is designed to dynamically adapt to the composite material surface. It automatically adjusts its position and orientation to maintain optimal contact and signal acquisition, ensuring consistent data quality regardless of scanning speed or surface variations. The system can dynamically adjust parameters to maintain precision while moving faster.
Solution Approach 2:
The system continuously monitors the ultrasonic signal quality and feedback from the sensor assembly. When the sensor detects variations in signal strength or quality, the system automatically adjusts scanning parameters, sensor pressure, or positioning to maintain consistent data acquisition, ensuring measurement precision is maintained even at high scanning speeds.
3Measurement precision
If contact force is increased to ensure consistent sensor contact, then measurement precision improves, but the risk of damaging the composite material increases
Solution Approach 1:
The sensor assembly applies only the minimum necessary contact force required to acquire adequate ultrasonic signals. This partial action approach ensures sufficient signal quality for defect detection while avoiding excessive pressure that could damage the composite material. The system uses just enough force to maintain consistent contact without compromising the material integrity.
Solution Approach 2:
The system dynamically adjusts the contact force parameter based on real-time feedback from the sensor assembly and the composite material surface conditions. By changing the pressure applied by the sensor assembly according to actual measurement needs and surface variations, the system maintains optimal signal quality while minimizing the risk of material damage through precise parameter control.
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 provides high-precision, non-destructive testing capable of efficiently scanning large areas, accurately detecting defects, and maintaining the structural integrity of composite materials, enhancing the reliability of composite material inspections.
Implementation Method 1
a sensor that scans a material to be tested by sending a signal to the material to be tested and receiving a signal waveform from the material
Data Source
AI summary
A system for automated bond testing includes a sensor that scans a material to be tested; a computer for comparing a reflected signal waveform to a plurality of signal waveforms indicating a defect in the material, and assigning a unique color to the match; a display that displays an image of the material having an assigned one of the plurality of colors indicative of a presence or absence of a defect in the test area; and an automated scanning platform that supports the sensor, the scanning platform moving the sensor in a preset motion over a surface of a test area of the material to be tested to perform an inspection scan of the material at the test area, and that positions the sensor at a predetermined position, a predetermined angle, and a predetermined contact force to acquire data consistently during an inspection.