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Recognition of Welding Defects in Radiographic ...

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Recognition of Welding Defects in Radiographic ...

Res. J. Appl. Sci. Eng. Technol., 2(3): 295-301, 2010 297 (a) Slag inclusions (b) Porosity (c) Incomplete penetration Fig. 1: Image after preprocessing

http://www.maxwellsci.com/print/rjaset/v2-295-301.pdf

Date added: November 6, 2011 - Views: 47

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NDT Images - Carestream Health

understand a wide variety of casting and welding defects that appear on images obtained during images will be compromised. Often, those Non-Destructive Testing (NDT).

http://www.carestream.com/ndt-Image_Guide.pdf

Date added: October 2, 2012 - Views: 30

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9. Welding Defects - kau.ac.kr

9. Welding Defects 109 A distinction of arising defects by their origin is shown in Figure 9.5. The development of the most important welding defects is ...

http://mercury.kau.ac.kr/welding/Welding%20Technology%20II%20-%20Welding%20Metallurgy/Chapter%209%20-%20Welding%20Defects.pdf

Date added: February 20, 2012 - Views: 464

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Automatic identification of different types of ...

Jul 31, 2014 · Automatic identification of different types of welding defects in radiographic images Gang Wang, T. Warren Liao* Department of Industrial and ...

https://dibujotecnicoutepsa.files.wordpress.com/2014/08/1automatic-identification-of-different-types-of-welding-defects-in-radiographic-images.pdf

Date added: April 21, 2015 - Views: 1

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CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS...

CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS USING TRAVERSAL ... Liao, T. W. Automatic Identification of Different Types of Welding Defects in Radiographic Images.

http://www.ndt.net/article/wcndt2004/pdf/radiography/715_padua.pdf

Date added: December 30, 2011 - Views: 24

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Lecture 6 Weldability and defects in weldments

Weldability and defects in weldments Subjects of Interest •Reviews of weld design and weldability •Residual stresses and weld distortion •Weld metal inhomogeneities

http://eng.sut.ac.th/metal/images/stories/pdf/06_%20Weldability%20and%20defects%20in%20weldments.pdf

Date added: May 18, 2012 - Views: 142

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A METHOD FOR DETECTION WELDING DEFECTS IN...

A method for detection welding defects in radiographic images 309 International Journal of Machine Intelligence ISSN: 0975–2927 & E-ISSN: 0975–9166, Volume 3 ...

http://eprints.uni-mysore.ac.in/15420/1/13258330823_4_24_IJMI.pdf

Date added: May 16, 2014 - Views: 1

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Detection of Welding Defects using S-TOFD and...

Detection of Welding Defects using S-TOFD and Digital Image Processing Techniques ... used the B-scan images of welded joints to detect the flaws present.

http://research.ijcaonline.org/volume48/number1/pxc3879909.pdf

Date added: May 3, 2013 - Views: 17

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Automatic Defect Detection and Counting In...

considering defects in weldment images as object of interest. To ... welding defects by increasing the quality of information while

http://www.ijcaonline.org/volume10/number2/pxc3871971.pdf

Date added: May 23, 2013 - Views: 2

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How to Detect Laser- Weld Defects in Pacemaker...

Acoustic images depend on the amplitude of the return signal. ... similar welding process as that used to weld ... How to Detect Laser-Weld Defects in Pacemaker ...

http://www.sonoscan.com/images/How_to_Detect_Laser_Weld_Defects_in_Pacemaker_Casings_TA_MDDI_Jan_2015.pdf

Date added: March 15, 2015 - Views: 1

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Image Thresholding for Weld Defect Extraction in...

Image Thresholding for Weld Defect Extraction in Industrial Radiographic Testing Nafaâ Nacereddine, Latifa Hamami, and Djemel Ziou Abstract—In non destructive ...

http://waset.org/publications/12939/image-thresholding-for-weld-defect-extractionin-industrial-radiographic-testing

Date added: January 10, 2014 - Views: 1

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Weld Defects in Austenitic Stainless Steel...

Sheets—Effect of Welding Parameters Defects grow in number and size as welding current increases, and the type of defect is determined by welding speed

https://app.aws.org/wj/supplement/WJ_1983_02_s45.pdf

Date added: May 21, 2015 - Views: 1

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Welding Defect Detection and Classification Using...

Welding Defect Detection and Classification Using Geometric Features ... image holding welding defects. The images in second column show images after thresholding.

http://www.computer.org/csdl/proceedings/fit/2012/4946/00/4927a139.pdf

Date added: December 22, 2014 - Views: 1

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WELDING DEFECTS

WELDING DEFECTS LACK OF FUSION Lack of fusion, also called cold lapping or cold shuts, occurs when there is no fusion between the weld metal and

http://xa.yimg.com/kq/groups/22687970/1840133808/name/Welding+Defect.pdf

Date added: November 27, 2013 - Views: 4

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Defects Introduced into Metals During Fabrication...

book concentrates on the process of welding and details many of the defects associated with joining ... with many Scanning Electron Microscope images of fracture ...

http://www.eolss.net/Sample-Chapters/C05/E6-36-04-01.pdf

Date added: April 29, 2012 - Views: 74

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Automatic Inspection System of Welding...

Automatic Inspection System of Welding Radiographic Images Based on ANN Under a Regularisation Process ... spection system of welding defects in radiographic images.

http://www.researchgate.net/profile/Rafael_Hernandez12/publication/257593229_Automatic_Inspection_System_of_Welding_Radiographic_Images_Based_on_ANN_Under_a_Regularisation_Process/links/54c9f3060cf2f0b56c250b57.pdf

Date added: May 22, 2015 - Views: 1

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Steel Surface Defects Detection and Classification

Steel Surface Defects Detection and Classification ... B. S., Tan, C. S.: Recognition of Welding Defects in Radiographic Images by Using Support Vector Machine ...

http://onlinepresent.org/proceedings/vol3_2012/53.pdf

Date added: March 13, 2013 - Views: 19

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TECHNICAL REPORT

selected joining methods one chapter addressing welding defects in general, and some relevant ... Images used are DNV property unless otherwise indicated.

http://www.ptil.no/getfile.php/z%20Konvertert/Helse%2C%20milj%C3%B8%20og%20sikkerhet/Hms-Aktuelt/Dokumenter/dnvrapport2.pdf

Date added: January 31, 2012 - Views: 31

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The Mechanisms of Formation of Weld Defects in...

The Mechanisms of Formation of Weld Defects in High-Frequency Electric Resistance Welding The two kinds of defects associated with previously defined welding

https://app.aws.org/wj/supplement/WJ_1981_06_s104.pdf

Date added: April 21, 2015 - Views: 1

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Weld defect detection in industrial radiography...

Abstract—Industrial radiography is a famous ... The radiographic film images contain weld defects placed ... “Evaluation of the relevant features of welding

http://waset.org/publications/3618/weld-defect-detection-in-industrial-radiography-based-digital-image-processing-

Date added: December 10, 2013 - Views: 1

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CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS...

CLASSIFICATION OF WELDING DEFECTS IN RADIOGRAPHS USING TRAVERSAL ... have the digital radiography available to have these images. The welding seam extraction require ...

http://www.romeu.eng.br/WCNDT2004_Germano_final.pdf

Date added: July 24, 2013 - Views: 2

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WELDING DEFECTS Welding defects, causes and...

WELDING DEFECTS Welding defects can greatly affect weld performance and longevity. ... This defect can only be repaired by grinding down or gouging out and re-welding.

http://www.bulkhandling.com.au/pdfs/26-28.pdf

Date added: February 20, 2012 - Views: 795

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Segmentation of welding defects using -...

Segmentation of welding defects using a robust algorithm Miguel Carrasco1 and Domingo Mery2* 1 Departamento de Ingeniería Informática Universidad de Santiago de Chile

http://www.researchgate.net/profile/Domingo_Mery/publication/228753041_Segmentation_of_welding_defects_using_a_robust_algorithm/links/0912f5097ad68b27a6000000.pdf

Date added: May 18, 2015 - Views: 1

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Slag Inclusion Defects In Film Image Radiographic

Automatic identification of different types of welding defects in radiographic images ... Other defects, such as slag inclusion or incomplete fusion ...

http://www.pdfsdocuments.com/slag-inclusion-defects-in-film-image-radiographic.pdf

Date added: November 8, 2014 - Views: 1

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Expert Systems with Applications

Expert Systems with Applications xxx ... Automatic identification of different types of welding defects in radiographic images. NDT and E International, 35(8), 519 ...

http://www.research.rutgers.edu/~dk598/downloads/comvis/eswa10/eswa10.pdf

Date added: October 3, 2014 - Views: 1

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www.iosrjen.org A Novel Approach for Automatic...

Researchers have done extensive work on welding defects evaluation ... “Hierarchical Segmentation Approach to Detection of Defects on Welding Radiographic Images”,

http://www.iosrjen.org/Papers/vol2_issue6%20(part-2)/A0260105.pdf

Date added: March 15, 2013 - Views: 1

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Statistical Fluctuation and Fractal Analyses of ...

Statistical Fluctuation and Fractal Analyses of Weld ... of D-scan images for the classification of welding defects. The images were obtained in welding ...

http://www.ndt.net/article/wcndt2012/papers/123_wcndtfinal00123.pdf

Date added: October 15, 2012 - Views: 2

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Chapter Weld Inspection and Repair -...

lary action and will identify any weld discontinui-ties or defects. ... To ensure sharp images on the film, ... If a weldment fails inspection, the welding

http://www.g-w.com/pdf/sampchap/9781605257938_ch18.pdf

Date added: February 27, 2013 - Views: 34

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APPLICATION OF ARTIFICIAL NEURAL NETWORKS TO...

defects, it is unsuccessful in identifying some welding defects because of the nature of ... The images were stored in jpg format. Defects are

http://www.physicsegypt.org/jnrp/v3n202.pdf

Date added: March 17, 2012 - Views: 60

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Shielding gas. Gases for all types of stainless...

used for TIG welding stainless steel than for steel, but not all ... the scrapping or repairing of welding defects can be a significant cost and must be avoided.

http://www.linde-gas.com/internet.global.lindegas.global/en/images/Shielding_gases_for_stainless_steel_60785_1217_82204.pdf

Date added: May 11, 2013 - Views: 5

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Evaluation of the Relevant Features of Welding ...

428 Carvalho et al. Materials Research 2. Detection and Classification of Welding Defects on Radiographic Images The radiographic image processing is especially used

http://www.scielo.br/pdf/mr/v6n3/a19v6n3.pdf

Date added: May 23, 2013 - Views: 1

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WELDING DEFECT PATTERN RECOGNITION IN...

1 23 rd World Gas Conference, Amsterdam 2006 WELDING DEFECT PATTERN RECOGNITION IN RADIOGRAPHIC IMAGES OF GAS PIPELINES USING ADAPTIVE FEATURE

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.96.3726&rep=rep1&type=pdf

Date added: December 17, 2011 - Views: 13

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Automated Detection of Welding Defects without...

Automated Detection of Welding Defects without Segmentation Domingo Mery Pontificia Universidad Catolica de Chile Av. Vicuna Mackenna 4860(143), Santiago de Chile

http://web.ing.puc.cl/~dmery/Prints/ISI-Journals/2011-MatEval-Welding.pdf

Date added: May 23, 2013 - Views: 2

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Automated Weld Defects Detection Using Image...

AUTOMATED WELD DEFECTS DETECTION USING IMAGE PROCESSING AND ... controlling different welding defects. ... of the images ca model is the eld defects lik ation, if any ca

https://pooya.um.ac.ir/ResearchDocuments/papers/1008883.pdf

Date added: March 5, 2015 - Views: 1

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Volume 1, Issue 6, June 2012 An Innovative Method...

Volume 1, Issue 6, June 2012 194 ... welding defects in radiographic images by using image processing techniques, including noise reduction, contrast

http://www.ijeit.com/vol%201/Issue%206/IJEIT1412201206_35.pdf

Date added: August 3, 2013 - Views: 3

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A Review on Inspection of welding defects using...

A Review on Inspection of welding defects using ... images, non-uniformed illumination, noise and deficient contrast, confusion of defects in same spot at surface.

http://www.ijser.org/researchpaper/A-Review-on-Inspection-of-welding-defects-using-Segmentation-Techniques.pdf

Date added: March 8, 2014 - Views: 1

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Radiographics pattern recognition of welding ...

Radiographics pattern recognition of welding defects ... (there are also equipments that generate digital images directly ... interpretation of welding defects.

http://www02.lps.ufrj.br/~caloba/Papers%20meus/welding%20radiographics%20-%20patterns%20recognition.pdf

Date added: May 21, 2012 - Views: 12

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PM10680 Characterization of Welding Defects by...

Prakt.Metallogr.39 (2002)8 ©CarlHanserVerlag,München 1 da Silva’ R.R. et al.: Welding Defects / Schweißfehler Characterization of Welding Defects by Digital ...

http://www.romeu.eng.br/paper_Final_Practical.pdf

Date added: November 26, 2013 - Views: 1

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Weld assessments and weld properties

weld properties Subjects of Interest Part I Weld assessment ... •Can be used to detect defects on each pass in multi-pass welding after it has been deposited.

http://eng.sut.ac.th/metal/images/stories/pdf/07_%20Weld%20porperties%20and%20assessment.pdf

Date added: November 6, 2012 - Views: 16

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DEFECT ASSESSMENT OF SPOT WELDS BY NDI A THESIS...

C. REAL-TIME RADIOGRAPHIC IMAGES OF ... 2.2 TYPICAL DEFECTS DUE TO SPOT WELDING Defects inversly affects ... technique for spot weld inspection is the capability to ...

http://etd.lib.metu.edu.tr/upload/4/1027382/index.pdf

Date added: April 1, 2012 - Views: 25

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Overview of Shielding Gases - Linde Gas

these welds can suffer from greater numbers of fusion defects than ... There are many ways in which a shielding gas can improve welding process performance.

http://www.linde-gas.com/internet.global.lindegas.global/en/images/Overview_of_shielding_gases_60734_1217_82202.pdf

Date added: May 7, 2013 - Views: 1

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Detection of Weld Line Defect for Oil-gas Pipeline...

ray welding image segmentation in this paper. The quality ... The discussions about identifying defects in images [J]. Nondestructive testing, 2002, (1): 5-8 .

http://www.academypublisher.com/proc/wisa09/papers/wisa09p273.pdf

Date added: May 8, 2012 - Views: 11

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Self-Inspection Checklist Welding, Cutting, and...

Self-Inspection Checklist Welding, Cutting, and Brazing Date Inspected _____ Date Completed _____ Checklist Needs to be Addressed

http://osha-record-keeping.com/images/PDF/Welding_Cutting_Brazing.pdf

Date added: November 6, 2013 - Views: 3

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New Jersey Section News - American Welding Society

New Jersey Section News April, 2014 Newsletter Information New Jersey Section News is the official publication of the AWS NJ Section. Publisher and

http://sections.aws.org/newjersey/images/AWSNJApril2014.pdf

Date added: April 25, 2014 - Views: 2

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Automated thresholding in radiographic image for ...

Automated thresholding in radiographic image for welded joints ... welding defects in radiographic images are present has lower intensity than the

http://www.tandfonline.com/doi/pdf/10.1080/10589759.2011.591795

Date added: May 22, 2015 - Views: 1

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STATE-OF-THE-ART OF MONITORING AND IMAGING OF...

STATE-OF-THE-ART OF MONITORING AND IMAGING OF LASER WELDING DEFECTS P. Norman1, H. Engström1, A. F. H. Kaplan1 1Luleå University of Technology, Luleå, Sweden

http://www.datlas.se/web/PDF/State-of-the-art_of_monitoring_and_imaging_of_laser_welding.pdf

Date added: May 27, 2013 - Views: 2

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Pictures of welding defects - ESAB

Welding problems and defects – causes and remedies www.esab.com XA00152120 1039136_Welding faults_Engels.indd 1 16-02-11 14:34. Title:

http://www.esab.com/gb/en/support/upload/XA00152120-Welding-defects-february-2011.pdf

Date added: December 6, 2012 - Views: 19

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Development of An Automated Inspection System for ...

Therefore, an automated inspection system for welding ... Since the intensity level of defects in the radiographic images are lower than the neighboring

http://eprints.usm.my/14796/1/paper3.pdf

Date added: February 20, 2012 - Views: 18

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Study and characterization of welding defects...

Study and characterization of welding defects during manufacturing AISInSAE 1008 carbon steel vessels F.S. Montejano, ... SEM images showing (a) ...

http://www.menawelding.org/wp-content/uploads/2013/05/1008-steel-defects.pdf

Date added: July 24, 2013 - Views: 10