Robotic Micro-XRF Scanning for Faster Chemical Anomaly Inspection
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Solution Overview
Problem
Existing inspection methods for chemical anomalies on manufactured components, such as ultrasonic, macroetch, eddy current, and micro-XRF, face limitations in precision, recall, and efficiency, particularly for complex geometries and time-consuming scans.
Innovation Solution
A micro-XRF inspection method utilizing a robotic arm-mounted X-ray source and detector system with a turn table, combined with a computer detection algorithm, performs a multi-scan approach of high-speed and high-resolution scans to identify chemical anomalies efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional micro-XRF inspection methods are used to ensure high measurement precision for chemical anomalies, then detection accuracy is improved, but inspection time increases significantly
Solution Approach 1:
The inspection process is divided into multiple passes: a first pass using lower resolution settings to cover large areas quickly, followed by a second pass using higher resolution settings only on regions of interest identified in the first pass. This segmentation allows the system to maintain high measurement precision for chemical anomalies while significantly reducing overall inspection time by applying high-resolution analysis only where needed.
Solution Approach 2:
The system performs a preliminary inspection at reduced resolution to identify potential anomaly locations, then applies full high-resolution analysis only to those specific regions. This partial application of high-resolution scanning avoids the time cost of scanning entire components at maximum resolution while still ensuring precise detection of chemical anomalies where they are most likely to occur.
2Measurement precision
If high-resolution scanning is used to detect small chemical anomalies, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The scanning process is segmented into a coarse survey phase and a fine inspection phase. The coarse phase quickly identifies regions containing small chemical anomalies, and the fine phase applies high-resolution scanning only to those specific regions. This allows the system to maintain high measurement precision for small anomalies while improving productivity by limiting high-resolution scanning to necessary areas only.
Solution Approach 2:
A preliminary low-resolution scan is performed to map the component and identify potential anomaly locations before conducting high-resolution scanning. This preliminary action guides the subsequent high-resolution inspection, ensuring that small chemical anomalies are detected with high precision while avoiding the productivity loss of scanning entire surfaces at maximum resolution.
3Measurement precision
If comprehensive inspection of complex geometry components is performed, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The inspection system uses a multi-functional robotic arm that can perform both positioning and scanning functions, eliminating the need for separate specialized equipment for complex geometry inspection. This universal device achieves high measurement precision on complex surfaces while reducing overall device complexity by consolidating multiple functions into a single integrated system.
Solution Approach 2:
The system employs dynamic, programmable robotic arms with multiple degrees of freedom that can adapt to complex component geometries through software control rather than fixed mechanical structures. This dynamic approach allows comprehensive inspection of complex surfaces with high measurement precision while keeping the physical device relatively simple and flexible.
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
Reduces inspection time while maintaining precision and recall requirements, enabling effective detection of chemical anomalies on complex components.
Implementation Method 1
micro-XRF instrument comprising an instrument head coupled to the robotic arm, the instrument head including an X-ray excitation source and at least one X-ray detector
Data Source
AI summary
An apparatus and method for an inspection apparatus for inspecting a component. The inspection apparatus including a robotic arm. A micro-XRF instrument having an instrument head coupled to the robotic arm. A seat supporting the component within a scanning area during inspection; and a computer in communication with the robotic arm and the micro-XRF instrument.