scholarly journals Gas Leakage Detection in Pipeline by SVM classifier with Automatic Eddy Current based Defect Recognition Method

2021 ◽  
Vol 3 (3) ◽  
pp. 196-212
Author(s):  
R. Rajesh Sharma
Keyword(s):  
Eddy Current ◽  
Current Method ◽  
Processing Technique ◽  
Industrial Safety ◽  
Image Processing Technique ◽  
Svm Classifier ◽  
Eddy Current Method ◽  
Gas Leakage ◽  
Detection And Identification ◽  
Wide Range

It's well-known that industrial safety is now a top concern. Nowadays, accidents caused by flammable gases occur frequently in our everyday lives. Gas cylinders, which are used for household purposes, wide range of businesses, and vehicles are often reported to be on the verge of exploding. Explosions have left a large number of individuals seriously wounded or could also be lethal in certain cases. This project's goal is to use a HOG features for SVM classifier which is used to identify pipeline gas leaks and keep tabs on them. In addition, the system utilises an image processing technique to identify pipeline fractures. Early detection and identification of pipeline flaws is a predominant aspect of this study. According to the suggested design, the robot capture the image down the pipe, looking for any signs of gas leakage by the Eddy Current method. This type of recognition has proved superior to other traditional methods. The methods with efficiency parameters and the results were compared and are tabulated in the results section. In the future, the data in the course of detection could be sent through GSM to a mobile application.

scholarly journals Extended Damage Detection and Identification in Aircraft Structure Based on Multifrequency Eddy Current Method and Mutual Image Similarity Assessment

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4452
Author(s):  
Tomasz Chady ◽  
Krzysztof Okarma ◽  
Robert Mikołajczyk ◽  
Michał Dziendzikowski ◽  
Piotr Synaszko ◽  
...  
Keyword(s):  
Image Quality ◽  
Eddy Current ◽  
Image Quality Assessment ◽  
Current Method ◽  
General Purpose ◽  
Reference Image ◽  
Destructive Testing ◽  
Eddy Current Method ◽  
Detection And Identification ◽  
Novel Approach

In this paper, a novel approach to Non-Destructive Testing (NDT) of defective materials for the aircraft industry is proposed, which utilizes an approach based on multifrequency and spectrogram eddy current method combined with an image analysis method previously applied for general-purpose full-reference image quality assessment (FR IQA). The proposed defect identification method is based on the use of the modified SSIM4 image quality metric. The developed method was thoroughly tested for various locations, sizes, and configurations of defects in the examined structure. Its application makes it possible to not only determine the presence of cracks but also estimate their size.

Detection of fiber waviness in carbon fiber prepreg using Eddy current method

2021 ◽  
pp. 100981
Author(s):  
Yanfei Liao ◽  
Jingjing Wang ◽  
Zhiwei Zeng ◽  
Junming Lin ◽  
Yonghong Dai
Keyword(s):  
Carbon Fiber ◽  
Eddy Current ◽  
Current Method ◽  
Eddy Current Method ◽  
Fiber Waviness

scholarly journals Numerical Simulation of Non-Destructive Remote Field Eddy Current Testing of Rolled Metal Tubes

2019 ◽  
pp. 46-55
Author(s):  
A.G. Efimov ◽  
N.R. Kuzelev ◽  
E.V. Martyanov ◽  
B.M. Kanter ◽  
A.E. Shubochkin
Keyword(s):  
Numerical Simulation ◽  
Eddy Current ◽  
Current Method ◽  
Eddy Current Testing ◽  
Eddy Current Method ◽  
Current Testing ◽  
Advantages And Disadvantages ◽  
Current Transducer ◽  
Non Destructive ◽  
Eddy Current Transducer

The first publications describing the physical principles of the non-destructive remote field eddy current testing method appeared about 30 years ago. This method allows to significantly expand the field of application of eddy current testing. However, due to the lack of a theoretical justification, this method did not get widespread use around the world. Domestic publications in this area are completely absent, and the descriptions given in few foreign publications often contradict each other. There are no results of full-scale simulation using numerical methods in available domestic and foreign sources. The distinctive feature of this method under consideration is the ability of detecting defects on the external (with respect to the eddy current transducer) side of the tested object, which is impossible for the classical eddy current method due to the limited eddy current penetration depth. The basics of the method were considered, the distinctive features were presented, and the advantages and disadvantages of remote field eddy current testing of metals were pointed out. A numerical simulation with the subsequent analysis of the obtained results has been carried out, the transducer design for remote field eddy current testing is given. The influence of various factors on the change in the added voltage of the signal coil of the eddy current transducer in the presence of a defect in the external wall of the tube was considered. Expressions that determine the optimal ratio of the diameters of the transducer and the tested product were obtained. The values of the test parameters and the limiting wall thickness of the tested ferromagnetic product were determined.

Influence of Geometrical Features of Material Defects on the Identification Level by the Eddy Current Method

2015 ◽  
Vol 237 ◽  
pp. 136-141
Author(s):  
Wojciech Jóźwik ◽  
Tomasz Samborski
Keyword(s):  
Eddy Current ◽  
Surface Defects ◽  
Roller Bearing ◽  
Current Method ◽  
Eddy Current Method ◽  
Cross Sectional ◽  
Tapered Roller Bearing ◽  
Geometrical Features ◽  
Inner Surface ◽  
The Face

The article presents the results of the influence of geometrical features of defects in materials on the level of identification by the eddy current method. The study involved the inner ring of the tapered roller bearing. Four test defects, located at a constant distance from the inner surface, and a subsurface marker defect were performed in the treadmill of the tested ring. The test defects had a constant cross-sectional area in a perpendicular direction to the surface of the eddy current head. The geometrical features of each defect were the following: shape, the perimeter of the defect projected onto the surface of the ring, and the width and height of the defect projected on the face of the measuring head. The study involved an inner surface (subsurface defect detection) and external surface (the study of surface defects). It has been shown that the shape of the defect affects the level of detection using the eddy current method.

Sign in / Sign up

Export Citation Format

Share Document