Pub Date : 1990-12-01Epub Date: 2003-03-24DOI: 10.1016/0308-9126(90)90859-M
J. Mercklé , D. Sauter , J. Ragot , J.-B. Lajournade , J.-M. Watrinet
When a metallic surface is tested by the eddy-current technique, defects produce events on the electrical signal coming from the sensor whose particular signature is a function of different factors such as the shape, size and position of any defects. Thanks to the introduction of modern digital signal processing methods, the quality of detection of events in the signal may be appreciably improved. The reliability of the decision mechanism, entrusted with reducing non-detection and limiting false alarms, is then increased and allows consideration of automatic testing. The work presented here was done jointly by the Institut de Recherches de la Sidérurgie Française (IRSID) of the Usinor-Sacilor group and the aboratoire d' Automatique et de Recherche Appliquée (LARA) of the Centre de Recherche en Automatique de Nancy (CRAN).
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Pub Date : 1990-12-01Epub Date: 2003-03-24DOI: 10.1016/0308-9126(90)90903-2
Nikitin A.I., Babushkina L.V.
{"title":"Solution of the problem of eddy currents in a conducting sphere situated in the field of a superposed transducer","authors":"Nikitin A.I., Babushkina L.V.","doi":"10.1016/0308-9126(90)90903-2","DOIUrl":"https://doi.org/10.1016/0308-9126(90)90903-2","url":null,"abstract":"","PeriodicalId":100946,"journal":{"name":"NDT International","volume":"23 6","pages":"Page 360"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0308-9126(90)90903-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72097946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1990-12-01Epub Date: 2003-03-24DOI: 10.1016/0308-9126(90)90857-K
F.H.C. Hotchkiss
This guide describes 11 designs of IIW-type ultrasonic calibration blocks. The designation ‘IIW-type block’ specifically recognizes that these designs are different from the authentic International Institute of Welding ‘IIW Calibration Block 1’. In order to avoid introducing new nomenclature, the designs are given as numbered examples. The designs cited are generally made of steel.
{"title":"Guide to designs of IIW-type blocks","authors":"F.H.C. Hotchkiss","doi":"10.1016/0308-9126(90)90857-K","DOIUrl":"https://doi.org/10.1016/0308-9126(90)90857-K","url":null,"abstract":"<div><p>This guide describes 11 designs of IIW-type ultrasonic calibration blocks. The designation ‘IIW-type block’ specifically recognizes that these designs are different from the authentic International Institute of Welding ‘IIW Calibration Block 1’. In order to avoid introducing new nomenclature, the designs are given as numbered examples. The designs cited are generally made of steel.</p></div>","PeriodicalId":100946,"journal":{"name":"NDT International","volume":"23 6","pages":"Pages 319-331"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0308-9126(90)90857-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72047672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1990-12-01Epub Date: 2003-03-24DOI: 10.1016/0308-9126(90)90944-J
Staikov S., Dolaptchiev I., Vassilev B.
{"title":"A new algorithm for processing the signal from an eddy current probe","authors":"Staikov S., Dolaptchiev I., Vassilev B.","doi":"10.1016/0308-9126(90)90944-J","DOIUrl":"https://doi.org/10.1016/0308-9126(90)90944-J","url":null,"abstract":"","PeriodicalId":100946,"journal":{"name":"NDT International","volume":"23 6","pages":"Page 363"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0308-9126(90)90944-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72038636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1990-12-01Epub Date: 2003-03-24DOI: 10.1016/0308-9126(90)90943-I
Van Den Berg W.H., Bakker H.L.M.
{"title":"Eddy current inspection of the internal bore of ferromagnetic heat-excharger tubing","authors":"Van Den Berg W.H., Bakker H.L.M.","doi":"10.1016/0308-9126(90)90943-I","DOIUrl":"https://doi.org/10.1016/0308-9126(90)90943-I","url":null,"abstract":"","PeriodicalId":100946,"journal":{"name":"NDT International","volume":"23 6","pages":"Page 363"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0308-9126(90)90943-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72038637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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