Eddy Current Testing Probe to Improve the Defect Detection Sensitivity of Metal Tube

2014 ◽  
Vol 945-949 ◽  
pp. 1987-1990
Author(s):  
Si Quan Zhang ◽  
Yu Liu ◽  
Hao Jun Xu ◽  
Chang Yin
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Defect Detection ◽  
Eddy Current ◽  
Experimental Results ◽  
Detection Sensitivity ◽  
Metal Tube ◽  
Current Testing ◽  
Element Simulation ◽  
Axial Defects

The structure of conventional bobbin probe was modified to improve the detection sensitivity of defects in metal tube. Based on the results of finite element simulation, several types of modified probes are fabricated and used to detect artificial defects in tube and the defect signals are acquired and analyzed. The simulation and experimental results verified that the modified eddy current probes are more sensitive to non-axial defects than conventional bobbin probe and can improve the reliability of tube inspection.

Eddy Current Defect Detection of Side Transverse Crack in Railhead by Integrating Experiment with Simulation

2014 ◽  
Vol 875-877 ◽  
pp. 593-598
Author(s):  
Zeng Lu Song ◽  
Tsutomu Yamada ◽  
Hideki Shitara ◽  
Yasushi Takemura
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Defect Detection ◽  
Eddy Current ◽  
Crack Depth ◽  
General Pattern ◽  
Future Research ◽  
Transverse Cracks ◽  
Element Simulation ◽  
Simulation Results

This study investigated the use of an eddy current technique for detecting side transverse cracks in a railhead. Quantitative analysis of defect signals in a railhead with side transverse cracks was realized through actual defect detection and finite-element simulation. In eddy current testing of the railhead, first, the general pattern of variation in the detected signals was obtained for different sizes of cracks via actual defect detection of rail samples. Then, finite-element simulation was used to verify the accuracy of the experimental results and to test the relationships between the detected signals and the size and depth of the cracks. The simulation results show that an extremely linear relation between crack depth and output signals in quantitative length of crack cases. In the results, simulation results can be applied to the analysis of the actual detected data. The eddy-current-defect detection method that combined experiment with simulation was very effective and can be applied in future research.

Finite element simulation of the probe displacement in eddy current testing

2014 ◽  
Vol 45 (1-4) ◽  
pp. 887-893 ◽  
Author(s):  
Houda Zaidi ◽  
Laurent Santandrea ◽  
Guillaume Krebs ◽  
Yann Le Bihan ◽  
Edouard Demaldent
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
Current Testing ◽  
Element Simulation

scholarly journals Study on the Optimization of Eddy Current Testing Coil and the Defect Detection Sensitivity

2015 ◽  
Vol 130 ◽  
pp. 1649-1657 ◽  
Author(s):  
H.T. Zhou ◽  
K. Hou ◽  
H.L. Pan ◽  
J.J. Chen ◽  
Q.M. Wang
Keyword(s):  
Defect Detection ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
Detection Sensitivity ◽  
Current Testing

scholarly journals Magnetic transmission gear finite element simulation with iron pole hysteresis

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Mattia Filippini ◽  
Piergiorgio Alotto ◽  
Gregor Glehn ◽  
Kay Hameyer
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Design Process ◽  
Eddy Current ◽  
Hysteretic Model ◽  
Post Processing ◽  
Element Simulation ◽  
Laminated Materials ◽  
Transmission Gear

Abstract Ferromagnetic poles in a magnetic transmission gear require particular attention during their design process. Usually, during the numerical simulation of these devices the effects of hysteresis for loss estimation are neglected and considered only during post-processing calculations. Since the literature lacks hysteresis models, this paper adopts a homogenized hysteretic model able to include eddy current and hysteresis losses in 2D laminated materials for iron poles. In this article the results related to the hysteresis in a magnetic gear are presented and compared to the non-hysteretic approach.

scholarly journals Finite Element Simulation Study of Ultrasonic Vibration-Assisted Tensile High-Volume Fraction SiCp/Al Composite

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3841 ◽  
Author(s):  
Zhang ◽  
Xiang ◽  
Wu ◽  
Feng ◽  
Shi ◽  
...  
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Finite Element Simulation ◽  
Ultrasonic Vibration ◽  
Stress Reduction ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
High Volume ◽  
Experimental Results ◽  
Element Simulation

Silicon carbide particle-reinforced aluminum matrix composite (SiCp/Al) has been widely used in the military and aerospace industry due to its special performance; however, there remain many problems in the processing. The present paper introduces an ultrasonic vibration tensile apparatus and a composite tensile specimen and performs Abaqus finite element simulation on high-volume SiCp/Al. The results show that the stress-strain curve increases linearly during conventional tensile strength; the intermittent vibration tensile strength is similar to the full course vibration tensile strength: The magnitude of the stress reduction increases as the amplitude of the ultrasound increases and the vibration frequency increases. The tensile rate is inversely proportional to the magnitude of the stress reduction, and in the ultrasonic parameters, the amplitude has the greatest influence on the magnitude of the stress reduction, followed by the tensile rate; additionally, the frequency has the least influence on the magnitude of the stress reduction. The experimental results show that the simulation results are consistent with the experimental results.

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