Global Patent Index - EP 2203723 A1

EP 2203723 A1 20100707 - PIEZOELECTRIC TRANSDUCER FOR THE NON-DESTRUCTIVE TESTING OF A STRUCTURE COMPRISING A HOLE

Title (en)

PIEZOELECTRIC TRANSDUCER FOR THE NON-DESTRUCTIVE TESTING OF A STRUCTURE COMPRISING A HOLE

Title (de)

PIEZOELEKTRISCHER WANDLER ZUR ZERSTÖRUNGSFREIEN PRÜFUNG EINER STRUKTUR, DIE EIN LOCH UMFASST

Title (fr)

TRANSDUCTEUR PIÉZOÉLECTRIQUE POUR LE CONTRÔLE NON-DESTRUCTIF D'UNE STRUCTURE COMPORTANT UN TROU

Publication

EP 2203723 A1 20100707 (FR)

Application

EP 08843588 A 20081021

Priority

  • EP 2008064177 W 20081021
  • FR 0758667 A 20071030

Abstract (en)

[origin: WO2009056472A1] A piezoelectric transducer (2), for the ultrasonic non-destructive testing of a structure comprising at least one hole, comprises at least one hole (220, 221) and is characterized in that it comprises a first dielectric layer (20) and a second dielectric layer (21), which said first layer and second layer being passed through by at least one hole (220, 221), and at least two elementary transducers (270, 271) located between said first layer and said second layer in the vicinity (230, 231) of at least one hole (220, 221), each elementary transducer (270, 271) essentially being formed by a piezoelectric active component (260a), by a primary electrode (240a - 247a) and by a secondary electrode (250a, 251a). Preferably, for each hole (220, 221), a single secondary electrode (250a, 251a) is shared by the at least two elementary transducers (270, 271). The invention also relates to a structure (7) and a part (8) made of a composite material integrating the piezoelectric transducer (2).

IPC 8 full level

G01H 11/08 (2006.01); G01N 29/24 (2006.01)

CPC (source: EP)

G01H 11/08 (2013.01); G01N 29/2437 (2013.01); G01N 2291/2694 (2013.01)

Citation (search report)

See references of WO 2009056472A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

FR 2923017 A1 20090501; FR 2923017 B1 20091120; EP 2203723 A1 20100707; WO 2009056472 A1 20090507

DOCDB simple family (application)

FR 0758667 A 20071030; EP 08843588 A 20081021; EP 2008064177 W 20081021