Xin’an Yuan
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View article: Mitigating Spreading Effects in Coplanar Capacitive Sensing via Regularized Image Deconvolution Using an Estimated PSF
Mitigating Spreading Effects in Coplanar Capacitive Sensing via Regularized Image Deconvolution Using an Estimated PSF Open
View article: A Novel Mfl-Pmp Composite Method for Classifying Surface and Hidden Defects in Ferromagnetic Materials
A Novel Mfl-Pmp Composite Method for Classifying Surface and Hidden Defects in Ferromagnetic Materials Open
View article: Excitation of Single Mode Shear Horizontal (0,1) Guided Wave in a Narrow Plate Waveguide Using D24 Piezoelectric Wafers
Excitation of Single Mode Shear Horizontal (0,1) Guided Wave in a Narrow Plate Waveguide Using D24 Piezoelectric Wafers Open
View article: Design and Testing of High-Resolution Probe Arrays Using Alternating Current Field Measurement Technique
Design and Testing of High-Resolution Probe Arrays Using Alternating Current Field Measurement Technique Open
For the large space of sensor array in the alternating current field measurement (ACFM) probe, the spatial resolution of the measured distorted magnetic image is low above defects. As a result, the accurate morphology of defects cannot be …
View article: Design and Experiment Research of Oblique Crack Detection System for Rail Tread Based on ACFM Technique
Design and Experiment Research of Oblique Crack Detection System for Rail Tread Based on ACFM Technique Open
The oblique crack is a major form of damage to the rail tread surface. When it reaches a certain depth, these cracks will rapidly expand and cause transverse fractures in the rail head. Therefore, the detection of oblique cracks on rail tr…
View article: Design and Experimental Study of Inner Uniform Electromagnetic Probe in Stainless Steel Pipe
Design and Experimental Study of Inner Uniform Electromagnetic Probe in Stainless Steel Pipe Open
Aiming at the deficiencies of the traditional uniform electromagnetic detection probes which is not suitable for the stainless pipe inner detection, a Helmholtz coil-type inner detection probe for stainless steel pipe and its experimental …
View article: Research on the Detection of Surface Cracks on Drilling Riser Using the Chain Alternating Current Field Measurement Probe Array
Research on the Detection of Surface Cracks on Drilling Riser Using the Chain Alternating Current Field Measurement Probe Array Open
Drilling riser is a critical component in offshore oil and gas industry. Due to the complicated alternating stress and corrosive environment, stress corrosion cracking (SCC) is the most common defect on drilling riser in service. A novel c…
View article: Visual Evaluation of Irregular Cracks in Steel by Double Gradient Fusion Algorithm Using Composite ACFM-MFL Testing Method
Visual Evaluation of Irregular Cracks in Steel by Double Gradient Fusion Algorithm Using Composite ACFM-MFL Testing Method Open
Visual evaluation of cracks in the steel under the coating is an important topic in the nondestructive testing field. In this paper, the double gradient fusion algorithm is presented for the visualization of irregular cracks using the comp…
View article: Circumferential Current Field Testing System with TMR Sensor Array for Non-contact Detection and Estimation of Cracks on Power Plant Piping
Circumferential Current Field Testing System with TMR Sensor Array for Non-contact Detection and Estimation of Cracks on Power Plant Piping Open
Piping is a critical component in power plant, which is subject to surface thermal fatigue cracks. Due to the high temperature and the presence of coatings, conventional non-destructive testing methods are unsuitable to detect the thermal …
View article: Alternating Current Field Measurement Technique for Detection and Measurement of Cracks in Structures
Alternating Current Field Measurement Technique for Detection and Measurement of Cracks in Structures Open
View article: Identification of Tiny Surface Cracks in a Rugged Weld by Signal Gradient Algorithm Using the ACFM Technique
Identification of Tiny Surface Cracks in a Rugged Weld by Signal Gradient Algorithm Using the ACFM Technique Open
It is still a big challenge to identify tiny surface cracks in a rugged weld due to the lift-off variations using the nondestructive testing (NDT) method. In this paper, the signal gradient algorithm is presented to identify the tiny surfa…
View article: Research on Real-time and High-Precision Cracks Inversion Algorithm for ACFM Based on GA-BP Neural Network
Research on Real-time and High-Precision Cracks Inversion Algorithm for ACFM Based on GA-BP Neural Network Open
Alternating current field measurement (ACFM) technology is an emerging nondestructive testing method, which has been used widely in oil industry for detecting and evaluating of surface cracks on structures. It is hard to achieve real-time …
View article: An Electromagnetic Helmholtz-Coil Probe for Arbitrary Orientation Crack Detection on the Surface of Pipeline
An Electromagnetic Helmholtz-Coil Probe for Arbitrary Orientation Crack Detection on the Surface of Pipeline Open
Subjected to hoop stress and land movement load, the orientation of cracks on the surface of pipeline may be axial direction, circumferential direction or the others. In this paper, an electromagnetic Helmholtz-coil probe is presented to d…
View article: Feasibility Study on the Use of the Coplanar Capacitive Sensing Technique for Underwater Non-Destructive Evaluation
Feasibility Study on the Use of the Coplanar Capacitive Sensing Technique for Underwater Non-Destructive Evaluation Open
Recent advancements in Non-Destructive Evaluation (NDE) techniques have demonstrated potential in assessing underwater structural integrity. However, evolving maritime structures demand more efficient, user-friendly, and technologically ad…
View article: Visual Reconstruction of Irregular Crack in Austenitic Stainless Steel Based on ACFM Technique
Visual Reconstruction of Irregular Crack in Austenitic Stainless Steel Based on ACFM Technique Open
For the advantages of corrosion resistance, high toughness and plasticity, the austenitic stainless steel is widely used in the petrochemical special equipment and offshore structure. The austenitic stainless steel usually services in high…
View article: High Sensitivity Rotating Alternating Current Field Measurement for Arbitrary-Angle Underwater Cracks
High Sensitivity Rotating Alternating Current Field Measurement for Arbitrary-Angle Underwater Cracks Open
Alternating current field measurement (ACFM) technology has been used for sizing underwater structure cracks. However, conventional ACFM is more sensitive to cracks perpendicular to the induced current than cracks with other angles. In thi…
View article: A Novel Fatigue Crack Angle Quantitative Monitoring Method Based on Rotating Alternating Current Field Measurement
A Novel Fatigue Crack Angle Quantitative Monitoring Method Based on Rotating Alternating Current Field Measurement Open
Under complicated fatigue loading conditions, cracks initiate nd grow in the arbitrary direction from corrosion pits in the aerospace equipment. The monitoring of crack propagation angle is very important for the safety assessment of the a…
View article: Detection of Cracks in Metallic Objects by Arbitrary Scanning Direction Using a Double U-Shaped Orthogonal ACFM Probe
Detection of Cracks in Metallic Objects by Arbitrary Scanning Direction Using a Double U-Shaped Orthogonal ACFM Probe Open
Alternating current field measurement (ACFM) technology is developed for sizing cracks on structures. According to the theory of ACFM, the induced current should be perpendicular to the crack. So traditional ACFM probe needs to scan along …
View article: Recent Development of Alternating Current Field Measurement Combine with New Technology
Recent Development of Alternating Current Field Measurement Combine with New Technology Open
View article: Inspection of Both Inner and Outer Cracks in Aluminum Tubes Using Double Frequency Circumferential Current Field Testing Method
Inspection of Both Inner and Outer Cracks in Aluminum Tubes Using Double Frequency Circumferential Current Field Testing Method Open
Aluminum and alloy tubes are widely used in industrial fields because of the advantage of good corrosion resistance, high thermal conductivity and light weight. Due to the stress corrosion cracking (SCC) and fatigue corrosion cracking (FCC…
View article: Novel Phase Reversal Feature for Inspection of Cracks Using Multi-frequency Alternating Current Field Measurement Technique
Novel Phase Reversal Feature for Inspection of Cracks Using Multi-frequency Alternating Current Field Measurement Technique Open
Aluminum and its alloys have been widely used in aerospace and other industrial fields. Aluminum and its alloy structures are prone to surface and subsurface cracks when they are used in harsh environments. In this paper, a novel phase rev…
View article: Visual ACFM System Modeling and Optimization for Accurate Measurement of Underwater Cracks
Visual ACFM System Modeling and Optimization for Accurate Measurement of Underwater Cracks Open
Alternating current field measurement (ACFM) has been proven to be a promising technique for sizing cracks on underwater structures. Precision and visualization are two big challenges for measuring underwater structure cracks, which is con…
View article: Face-Shear Single-Mode Guided Wave for Prediction of Double Ended Fatigue Crack Propagation Using Particle Filter Method
Face-Shear Single-Mode Guided Wave for Prediction of Double Ended Fatigue Crack Propagation Using Particle Filter Method Open
View article: Research on High-Precision Evaluation of Crack Dimensions and Profiles Methods for Underwater Structure Based on ACFM Technique
Research on High-Precision Evaluation of Crack Dimensions and Profiles Methods for Underwater Structure Based on ACFM Technique Open
The conventional alternating current field measurement (ACFM) technique evaluates the crack dimensions by the distance between Bz peaks and the Bx trough. The interaction of the crack length and depth on the characteristic signals is not c…
View article: High-accuracy calibration method for an underwater one-mirror galvanometric laser scanner
High-accuracy calibration method for an underwater one-mirror galvanometric laser scanner Open
Three-dimensional (3D) perception of deep-sea targets is the key to autonomous operation of underwater equipment (e.g., underwater robots). Underwater one-mirror galvanometric line-laser scanner has advantages for short-range measurement, …
View article: Crack Identification and Quantification Methods Under the Condition of Lift-Off Effect Using Alternating Current Field Measurement Technique
Crack Identification and Quantification Methods Under the Condition of Lift-Off Effect Using Alternating Current Field Measurement Technique Open
View article: Vision measurement system for geometric parameters of tubing internal thread based on double-mirrored structured light
Vision measurement system for geometric parameters of tubing internal thread based on double-mirrored structured light Open
Geometric parameter measurement of tubing internal thread is critical for oil pipeline safety. In response to the shortcomings of existing methods for measuring internal thread geometric parameters, such as low efficiency, poor accuracy, a…
View article: Single-lens multi-mirror laser stereo vision-based system for measuring internal thread geometrical parameters
Single-lens multi-mirror laser stereo vision-based system for measuring internal thread geometrical parameters Open
Oilfield pipes with out-of-tolerance internal thread can lead to failures, so the internal thread geometric parameters need to be measured. To tackle the problem of the low efficiency, poor accuracy, easy wear, and poor accessibility of ex…
View article: Detection of Outer Wall Defects on Steel Pipe Using an Encircling Rotating Electromagnetic Field Eddy Current (RoFEC) Technique
Detection of Outer Wall Defects on Steel Pipe Using an Encircling Rotating Electromagnetic Field Eddy Current (RoFEC) Technique Open
In recent years, the rotating electromagnetic field eddy current (RoFEC) testing technique has attracted widespread attention due to its various advantages for inspecting tubular structures. However, most of the related work was focused on…
View article: Spatial light path analysis and calibration of four-mirror-based monocular stereo vision
Spatial light path analysis and calibration of four-mirror-based monocular stereo vision Open
The feasibility and accuracy of four-mirror-based monocular stereo vision (FMSV) are related to the system layout and calibration accuracy, respectively. In this study, a spatial light path analysis method and a calibration method are prop…