EP 1910814 A2 20080416 - METHOD FOR ERROR-FREE CHECKING OF TUBES FOR SURFACE FAULTS
Title (en)
METHOD FOR ERROR-FREE CHECKING OF TUBES FOR SURFACE FAULTS
Title (de)
VERFAHREN ZUR ZERSTÖRUNGSFREIEN PRÜFUNG VON ROHREN AUF OBERFLÄCHENFEHLER
Title (fr)
PROCEDE DE VERIFICATION NON DESTRUCTIVE DE TUYAUX, POUR DETECTER D'EVENTUELS DEFAUTS SUPERFICIELS
Publication
Application
Priority
- DE 2006001361 W 20060728
- DE 102005036509 A 20050729
- DE 102005063352 A 20050729
- DE 102006035599 A 20060727
Abstract (en)
[origin: WO2007012331A2] The invention relates to near-real-time recording and analysis of data relating to surface faults. The following steps are used: transmission of the signals to a pre-amplifier, conversion of the analogue signals to a continuous data stream of digital data, buffering the data stream in a first memory (A), filing the first memory (A) with k data points, copying the k data points of the first memory (A) to a second memory (B) in a short time between two digital data points with simultaneous refilling of the first memory (A) with new data, transformation of the copied data by means of wavelet transformation and filtering or modification of the resulting wavelet coefficients, comparison of the measured parameters with a reference parameter, whereby a determined fault signal can be unambiguously allocated to the position of the fault.
IPC 8 full level
G01N 27/87 (2006.01)
CPC (source: EP US)
G01N 27/82 (2013.01 - EP US); G01N 27/9026 (2013.01 - EP US)
Citation (search report)
See references of WO 2007012331A2
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
DOCDB simple family (publication)
WO 2007012331 A2 20070201; WO 2007012331 A3 20070419; AR 054887 A1 20070725; CA 2616897 A1 20070201; CA 2616897 C 20150616; EP 1910814 A2 20080416; MX 2008001357 A 20080416; US 2008228412 A1 20080918; US 7783432 B2 20100824
DOCDB simple family (application)
DE 2006001361 W 20060728; AR P060103327 A 20060731; CA 2616897 A 20060728; EP 06775800 A 20060728; MX 2008001357 A 20060728; US 99706506 A 20060728