Global Patent Index - EP 1848989 A1

EP 1848989 A1 2007-10-31 - METHOD FOR PRODUCING A HIGH-DYNAMICS AND HIGH-SPATIAL RESOLUTION EDDY CURRENT TESTING HEAD

Title (en)

METHOD FOR PRODUCING A HIGH-DYNAMICS AND HIGH-SPATIAL RESOLUTION EDDY CURRENT TESTING HEAD

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES WIRBELSTROMTESTKOPFS MIT HOHER DYNAMIK UND HOHER RÄUMLICHER AUFLÖSUNG

Title (fr)

PROCEDE REALISATION D'UNE TETE DE CONTROLE A COURANTS DE FOUCAULT DE GRANDE DYNAMIQUE ET DE HAUTE RESOLUTION SPATIALE

Publication

EP 1848989 A1 (FR)

Application

EP 06709453 A

Priority

  • FR 2006050069 W
  • FR 0550346 A
  • FR 0550917 A

Abstract (en)

[origin: WO2006082334A1] The invention concerns a method for producing an assembly of at least one transmission coil (B<SUB>1</SUB>) and one reception coil (B<SUB>2</SUB>) for eddy current testing, the reception coil receiving in the absence of fault a complex amplitude signal V<SUB>R</SUB>, subjected to a variation dV<SUB>R</SUB> in the presence of a characteristic fault to be detected. The method consists in selecting the distance ?<SUB>ER</SUB> between the axes of the transmission coil and the reception coil so as to maximize the ratio I dV<SUB>R</SUB>/V<SUB>R </SUB>I.

IPC 8 full level (invention and additional information)

G01N 27/90 (2006.01)

CPC (invention and additional information)

G01N 27/9086 (2013.01)

Citation (search report)

See references of WO 2006082334A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

WO 2006082334 A1 20060810; EP 1848989 A1 20071031

INPADOC legal status


2012-03-28 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20120223

2008-05-14 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED

2007-10-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070727

2007-10-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR