EP 2705343 A1 20140312 - MONITORING UNIT AND METHOD FOR DETECTING STRUCTURAL DEFECTS WHICH CAN OCCUR IN AN AIRCRAFT NACELLE DURING USE
Title (en)
MONITORING UNIT AND METHOD FOR DETECTING STRUCTURAL DEFECTS WHICH CAN OCCUR IN AN AIRCRAFT NACELLE DURING USE
Title (de)
ÜBERWACHUNGSEINHEIT UND VERFAHREN ZUR ERKENNUNG VON STRUKTURDEFEKTEN EINER FLUGZEUGTRIEBWERKSGONDEL WÄHREND DES BETRIEBS
Title (fr)
ENSEMBLE ET PROCEDE DE SURVEILLANCE POUR DETECTER DES DEFAUTS STRUCTURELS POUVANT APPARAITRE DANS UNE NACELLE D'AERONEF EN SERVICE
Publication
Application
Priority
- FR 1153717 A 20110502
- FR 2012050799 W 20120412
Abstract (en)
[origin: WO2012150394A1] The invention relates to a monitoring unit (11) which includes a composite sandwich structure (10) forming a portion of the aircraft nacelle (1), a plurality of sensors (14) for generating signals representative of an amplitude and/or frequency of vibrations. Each sensor (14) transmits said signals via electromagnetic waves, e.g. via radio frequencies. Each sensor (14) is an electromechanical microsystem including a means for converting mechanical energy into electrical energy. A computing unit (15) is suitable for: evaluating the differences between a current transfer function resulting from said signals and a predetermined nominal transfer function; comparing each of said differences with a respective detection threshold; and, from said comparison, estimating or evaluating the size and/or position of said structural defect in the structure (10).
IPC 8 full level
G01M 5/00 (2006.01)
CPC (source: EP US)
G01M 5/0033 (2013.01 - EP US); G01M 5/0066 (2013.01 - EP US); G01M 5/0091 (2013.01 - EP US); G01N 29/12 (2013.01 - US); G01N 29/4445 (2013.01 - US)
Citation (search report)
See references of WO 2012150394A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012150394 A1 20121108; BR 112013027295 A2 20190212; CA 2834757 A1 20121108; CN 103534569 A 20140122; EP 2705343 A1 20140312; FR 2974900 A1 20121109; FR 2974900 B1 20130517; RU 2013152414 A 20150610; US 2014053649 A1 20140227
DOCDB simple family (application)
FR 2012050799 W 20120412; BR 112013027295 A 20120412; CA 2834757 A 20120412; CN 201280021800 A 20120412; EP 12722407 A 20120412; FR 1153717 A 20110502; RU 2013152414 A 20120412; US 201314068722 A 20131031