Uniform eddy current probe based on GMR sensor array and image processing for NDT

2012 ◽  
Author(s):  
Octavian Postolache ◽  
A. Lopes Ribeiro ◽  
Helena Geirinhas Ramos
Keyword(s):  
Image Processing ◽  
Eddy Current ◽  
Sensor Array ◽  
Gmr Sensor

HIGH RESOLUTION EDDY-CURRENT WIRE TESTING BASED ON A GMR SENSOR-ARRAY

2009 ◽  
Author(s):  
Marc Kreutzbruck ◽  
Kai Allweins ◽  
Chris Strackbein ◽  
Hendrick Bernau ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
High Resolution ◽  
Eddy Current ◽  
Sensor Array ◽  
Gmr Sensor

Eddy Current Testing Probe Based on Double-Coil Excitation and GMR Sensor

2019 ◽  
Vol 68 (5) ◽  
pp. 1533-1542 ◽  
Author(s):  
Andrea Bernieri ◽  
Luigi Ferrigno ◽  
Marco Laracca ◽  
Antonio Rasile
Keyword(s):  
Eddy Current ◽  
Eddy Current Testing ◽  
Current Testing ◽  
Gmr Sensor

scholarly journals BACK TO BASICS: TOWARDS NOVEL COMPUTATION AND ARRANGEMENT OF SPATIAL SENSORY IN IMAGES

2016 ◽  
Vol 56 (5) ◽  
pp. 409-416 ◽  
Author(s):  
Wei Wen ◽  
Siamak Khatibi
Keyword(s):  
Image Processing ◽  
Sensor Array ◽  
Fill Factor ◽  
Spatial Arrangement ◽  
Optimal Sampling ◽  
High Contrast ◽  
Visual Spatial ◽  
Hexagonal Form ◽  
Sensor Resolution ◽  
Hexagonal Image Processing

The current camera has made a huge progress in the sensor resolution and the lowluminance performance. However, we are still far from having an optimal camera as powerful as our eye is. The study of the evolution process of our visual system indicates attention to two major issues: the form and the density of the sensor. High contrast and optimal sampling properties of our visual spatial arrangement are related directly to the densely hexagonal form. In this paper, we propose a novel software-based method to create images on a compact dense hexagonal grid, derived from a simulated square sensor array by a virtual increase of the fill factor and a half a pixel shifting. After that, the orbit functions are proposed for a hexagonal image processing. The results show it is possible to achieve an image processing in the orbit domain and the generated hexagonal images are superior, in detection of curvature edges, to the square images. We believe that the orbit domain image processing has a great potential to be the standard processing for hexagonal images.

scholarly journals Fatigue Crack Length Sizing Using a Novel Flexible Eddy Current Sensor Array

Sensors ◽  
2015 ◽  
Vol 15 (12) ◽  
pp. 32138-32151 ◽  
Author(s):  
Ruifang Xie ◽  
Dixiang Chen ◽  
Mengchun Pan ◽  
Wugang Tian ◽  
Xuezhong Wu ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Length ◽  
Eddy Current ◽  
Sensor Array ◽  
Current Sensor ◽  
Eddy Current Sensor

Planar Eddy Current Sensor Array With Null-Offset

2019 ◽  
Vol 19 (12) ◽  
pp. 4647-4651 ◽  
Author(s):  
Lihui Liu ◽  
Dixiang Chen ◽  
Mengchun Pan ◽  
Wugang Tian ◽  
Wei Wang ◽  
...  
Keyword(s):  
Eddy Current ◽  
Sensor Array ◽  
Current Sensor ◽  
Eddy Current Sensor

MODEL-BASED INVERSION IN EDDY CURRENT IMAGE PROCESSING

2009 ◽  
Author(s):  
John C. Aldrin ◽  
Jeremy S. Knopp ◽  
Kumar V. Jata ◽  
Donald O. Thompson ◽  
Dale E. Chimenti
Keyword(s):  
Image Processing ◽  
Eddy Current ◽  
Current Image ◽  
Model Based

Effect of Conformable Substrate Thickness on an Eddy Current Sensor Array’s Output Characteristics

2011 ◽  
Vol 335-336 ◽  
pp. 1503-1507
Author(s):  
Jin Qiang Du ◽  
Yu Ting He ◽  
Hua Ding ◽  
Hai Wei Zhang ◽  
Li Ming Wu
Keyword(s):  
Finite Element ◽  
Eddy Current ◽  
Sensor Array ◽  
Element Model ◽  
Current Sensor ◽  
Substrate Thickness ◽  
Eddy Current Sensor ◽  
Sensor Fabrication ◽  
Output Characteristics ◽  
Couple Method

A finite element model of an eddy current sensor array is built up by electromagnetic-circuit couple method, and the influences of conformable substrate thickness on sensor’s output characteristics are analyzed by the model. It is shown that the amplitude of sensing coils’ output would diminish as substrate thickness increased, besides, the discrepancies of sensing coils’ output also decrease when the substrate becoming thicker. Therefore tt is necessary to make the conformable substrate as thin as possible in sensor fabrication process to enhance the crack inspecting ability of the sensor.

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