Accurate 3D reconstruction of complex defects based on combined method of MFL and MFDs
- 1 February 2021
- journal article
- research article
- Published by IOP Publishing in Measurement Science and Technology
- Vol. 32 (7), 075402
- https://doi.org/10.1088/1361-6501/abe1e1
Abstract
The two-step strategy for 3D reconstruction of complex defects was updated by combining the magnetic field disturbance (MFD) with magnetic flux leakage (MFL) measurement methods. Firstly, the plane-scanned MFD imaging was employed to achieve high-accuracy reconstruction of the opening outlines of complex defects. Secondly, the finite element simulation model of the defect with the recognized opening outline was established as the forward model for depth profile inversion with the particle swarm optimization algorithm. The performances of the conventional MFL-based and updated strategies were carefully compared through finite element simulation. The results proved that the updated method combining MFD signals with MFL signals had the better performance in accurate 3D reconstruction of complex defects than the conventional MFL-based inversion strategy, displaying smaller errors in opening outline, peak depth and the profile. Experimental results confirmed that the updated strategy could accurately reconstruct the 3D shape of 8-shaped defect and rectangular defect with rounded corners.Keywords
Funding Information
- Beijing Nova Program of Science and Technology (Z191100001119044)
- National Key R&D Program of China (2018YFC0809003)
This publication has 25 references indexed in Scilit:
- A Novel Method for the Image Quality Improvement of Ultrasonic TomographyIEEE Transactions on Instrumentation and Measurement, 2020
- Fully Noncontact Hybrid NDT for 3D Defect Reconstruction Using SAFT Algorithm and 2D Apodization WindowSensors, 2019
- Inspection of Gas Pipelines Using Magnetic Flux Leakage TechnologyAdvances in Materials Science, 2017
- A boundary detecting method for post-tensioned pre-stressed ducts based on Q-factor analysisSensors and Actuators A: Physical, 2016
- Design of Tunnel Magnetoresistive-Based Circular MFL Sensor Array for the Detection of Flaws in Steel Wire RopeJournal of Sensors, 2016
- Theory and Application of Magnetic Flux Leakage Pipeline DetectionSensors, 2015
- Non-destructive testing of inclusions in cold-rolled strip steels using hall and giant magnetoresistance sensor arraysInternational Journal of Applied Electromagnetics and Mechanics, 2014
- Cable inspection robot for cable‐stayed bridges: Design, analysis, and applicationJournal of Field Robotics, 2011
- Three-Dimensional Localization of Defects in Stay Cables Using Magnetic Flux Leakage MethodsJournal of Nondestructive Evaluation, 2003
- Advanced signal processing of magnetic flux leakage data obtained from seamless gas pipelineNDT & E International, 2002