scholarly journals Eddy Current Testing Probe Composed of Double Uneven Step Distributing Planar Coils for Crack Detection

2008 ◽  
Vol 128 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Peng Xu ◽  
Katsunori Shida
Keyword(s):  
Eddy Current ◽  
Crack Detection ◽  
Eddy Current Testing ◽  
Current Testing

Based on Eddy Current Testing of Automotive Wheel Crack Detection Platform Design

2014 ◽  
Vol 536-537 ◽  
pp. 1021-1025
Author(s):  
Jun Lv
Keyword(s):  
Control Systems ◽  
Circuit Design ◽  
Eddy Current ◽  
Crack Detection ◽  
Structure And Function ◽  
Eddy Current Testing ◽  
Design System ◽  
Platform Design ◽  
Current Testing ◽  
And Function

This document explains and demonstrates based on eddy current testing of automotive wheel crack detection platform design, introduces the crack detection units overall structure and function. Detection station control systems, pneumatic systems, marking systems and circuit design system are described.

scholarly journals Edge Effect Analysis and Edge Defect Detection of Titanium Alloy Based on Eddy Current Testing

2020 ◽  
Vol 10 (24) ◽  
pp. 8796
Author(s):  
Yuedong Xie ◽  
Jiyao Li ◽  
Yang Tao ◽  
Shupei Wang ◽  
Wuliang Yin ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Edge Effect ◽  
Defect Detection ◽  
Eddy Current ◽  
Crack Detection ◽  
Simulation Method ◽  
Eddy Current Testing ◽  
Detection Capability ◽  
Edge Defect ◽  
Current Testing

Titanium alloy is widely used in the area of aerospace and aviation due to its excellent properties. Eddy current testing (ECT) is among the most extensively used non-destructive techniques for titanium alloy material inspection. However, most previous research has focused on inspecting defects far from the edge of the material. It is a challenging task for edge crack detection because of edge effect. This study aims to investigate the influences of sensor parameters on edge effect and defect detection capability, and in the meantime, optimize sensor parameters to improve the capability of edge defect detection. The simulation method for edge effect evaluation is proposed including the 2k factorial design used for factor screening, and the regression model is fitted and validated for sensor design and optimization for edge defect detection. A simulation scheme is designed to investigate the defect detection capability. An approach comprehensively analyzing the influence of coil parameters on edge effect and defect detection capability is applied to determine the optimal coil parameters for edge defect detection.

scholarly journals Challenges in improving the performance of eddy current testing: Review

2018 ◽  
Vol 52 (1-2) ◽  
pp. 46-64 ◽  
Author(s):  
Ahmed N AbdAlla ◽  
Moneer A Faraj ◽  
Fahmi Samsuri ◽  
Damhuji Rifai ◽  
Kharudin Ali ◽  
...  
Keyword(s):  
Eddy Current ◽  
Crack Detection ◽  
Oil And Gas ◽  
Structure Design ◽  
Eddy Current Testing ◽  
Testing Technique ◽  
Current Testing ◽  
Advantages And Disadvantages ◽  
Lift Off ◽  
Design Factors

Eddy current testing plays an important role in numerous industries, particularly in material coating, nuclear and oil and gas. However, the eddy current testing technique still needs to focus on the details of probe structure and its application. This paper presents an overview of eddy current testing technique and the probe structure design factors that affect the accuracy of crack detection. The first part focuses on the development of different types of eddy current testing probes and their advantages and disadvantages. A review of previous studies that examined testing samples, eddy current testing probe structures and a review of factors contributing to eddy current signals is also presented. The second part mainly comprised an in-depth discussion of the lift-off effect with particular consideration of ensuring that defects are correctly measured, and the eddy current testing probes are optimized. Finally, a comprehensive review of previous studies on the application of intelligent eddy current testing crack detection in non destructive eddy current testing is presented.

Probabilistic evaluation of detection capability of eddy current testing to inspect pitting on a stainless steel clad using multiple signal features

2020 ◽  
Vol 64 (1-4) ◽  
pp. 47-55
Author(s):  
Takuma Tomizawa ◽  
Haicheng Song ◽  
Noritaka Yusa
Keyword(s):  
Stainless Steel ◽  
Eddy Current ◽  
Pressure Vessels ◽  
Eddy Current Testing ◽  
Probability Of Detection ◽  
Current Testing ◽  
Multiple Signal ◽  
Signal Features ◽  
Inner Surface ◽  
Drill Holes

This study proposes a probability of detection (POD) model to quantitatively evaluate the capability of eddy current testing to detect flaws on the inner surface of pressure vessels cladded by stainless steel and in the presence of high noise level. Welded plate samples with drill holes were prepared to simulate corrosion that typically appears on the inner surface of large-scale pressure vessels. The signals generated by the drill holes and the noise caused by the weld were examined using eddy current testing. A hit/miss-based POD model with multiple flaw parameters and multiple signal features was proposed to analyze the measured signals. It is shown that the proposed model is able to more reasonably characterize the detectability of eddy current signals compared to conventional models that consider a single signal feature.

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