EP 2673630 A1 20131218 - METHOD OF DETECTING THE POSITION OF A DEFECT IN A BODY
Title (en)
METHOD OF DETECTING THE POSITION OF A DEFECT IN A BODY
Title (de)
VERFAHREN ZUR POSITIONSERFASSUNG EINES DEFEKTS IN EINEM KÖRPER
Title (fr)
PROCÉDÉ DE DÉTECTION DE LA POSITION D'UN DÉFAUT DANS UN CORPS
Publication
Application
Priority
- DE 102011010680 A 20110208
- EP 2012000562 W 20120208
Abstract (en)
[origin: WO2012107218A1] The invention relates to a method for the absolute lateral position capturing of a defect in a body with a known propagation speed for acoustic waves, or sound, comprising the following method steps: a) generating a sound pulse (S1) at a first defined position (P1) on the body; b) capturing a sound signal (S2) at a second defined position (P2) on the body; c) capturing a sound signal (S3) at a third defined position (P3) on the body; d) capturing a sound signal (S4) at a fourth defined position (P4) on the body, wherein the positions (P1 to P4) are spaced apart from one another; e) analysing the sound signals (S2) and (S3) and (S4) with respect to whether they originate from the defect in the form of a reflection or transmission; f) ascertaining the propagation times (T2) and (T3) and (T4) of the sound signals (S2 to S4) starting at the defect to the respective position (P2 to P4); g) calculating a first hyperbola (H1) as a set of all points, the propagation time difference of which is (T2) to (T3), with the focal points (P2) and (P3) and a first real semi-axis (2a1) along the connecting straight line (P2-P3); h) calculating a second hyperbola (H2) as a set of all points, the propagation time difference of which is (T3) to (T4), with the focal points (P3) and (P4) and a second real semi-axis (2a2) along the connecting straight line (P3-P4); i) ascertaining a point of intersection of the first hyperbola (H1) and the second hyperbola (H2) in the inside of the body as a position coordinate of the defect.
IPC 8 full level
G01N 29/06 (2006.01); G01M 17/10 (2006.01)
CPC (source: EP)
G01N 29/069 (2013.01); G01N 2291/0289 (2013.01); G01N 2291/103 (2013.01); G01N 2291/2696 (2013.01)
Citation (search report)
See references of WO 2012107218A1
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)
DE 102011010680 A1 20120809; EP 2673630 A1 20131218; WO 2012107218 A1 20120816
DOCDB simple family (application)
DE 102011010680 A 20110208; EP 12703455 A 20120208; EP 2012000562 W 20120208