Magnetic Flux Leakage Inspection Using Virtual Data Noise Suppression
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Solution Overview
Problem
Conventional nondestructive magnetic inspections for detecting ruptures in magnetic materials covered by nonmagnetic bodies require inefficient two-time measurements and may lead to inconsistent data due to the need to reset the measurement device, complicating the determination of breakage presence and position.
Innovation Solution
An information processing system and method that utilize actual and virtual measurement data to reduce noise magnetic field components and emphasize target components, using a magnetic sensor to measure and visualize magnetic field components from the measurement target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If double measurements are performed in regular and inverse magnetizing scanning directions to double magnetic power components, then measurement precision is improved, but productivity deteriorates due to inefficient measuring operation
Solution Approach 1:
The patent creates virtual measurement data that copies the characteristics of actual measurement data obtained under different magnetizing directions. Instead of performing physical double measurements, the system generates virtual data through computer simulation that replicates what would be obtained from measurements in opposite directions, thereby achieving the same noise cancellation effect without the time penalty
Solution Approach 2:
The patent replaces the mechanical process of performing actual double measurements with a computational approach. Virtual measurement data is generated through computer-based simulation and signal processing algorithms, substituting the physical act of remeasuring with mathematical operations on existing data
2Adaptability or versatility
If device removal and resetting is required between measurements, then adaptability is improved for different measurement scenarios, but loss of time increases due to position inconsistency
Solution Approach 1:
The patent performs preliminary data processing and virtual measurement generation while the device is still in position. By creating virtual measurement data that corresponds to the actual measurement position and conditions, the system eliminates the need for time-consuming device removal and resetting operations
Solution Approach 2:
The patent introduces virtual measurement data as an intermediary that bridges the gap between actual measurements taken at different positions. This virtual data serves as a mediator that allows comparison and analysis without requiring physical repositioning of the measurement device
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 efficient visualization of magnetic field components to determine the presence and position of breakages in magnetic materials without lowering measurement efficiency, by reducing noise and emphasizing target components through actual and virtual data processing.
Implementation Method 1
an inspection device using the magnetic flux leakage testing has been proposed
Data Source
AI summary
An information processing system is for nondestructive inspection of a measurement target that is a magnetic material covered by a nonmagnetic body. The system includes an information processing device that reduces noise magnetic field components other than magnetic field components coming from the measurement target and/or emphasizes the magnetic field components coming from the measurement target in actual measurement data, based on the actual measurement data and virtual measurement data. The actual measurement data is obtained by applying a magnetic field to the measurement target and actually measuring a magnetic field coming from the measurement target using a magnetic sensor at a measurement position on a surface of the nonmagnetic body. The virtual measurement data is created under virtual conditions that are obtained by modifying actual measurement conditions.