EP 2627995 A1 20130821 - METHOD AND APPARATUS FOR MEASURING THE QUALITY OF A TRANSPARENT TUBULAR OBJECT
Title (en)
METHOD AND APPARATUS FOR MEASURING THE QUALITY OF A TRANSPARENT TUBULAR OBJECT
Title (de)
VERFAHREN UND VORRICHTUNG ZUR MESSUNG DER QUALITÄT EINES TRANSPARENTEN RÖHRENFÖRMIGEN OBJEKTS
Title (fr)
PROCÉDÉ ET APPAREIL PERMETTANT DE MESURER LA QUALITÉ D'UN OBJET TUBULAIRE TRANSPARENT
Publication
Application
Priority
- IT PI20100110 A 20101008
- IB 2011002374 W 20111010
Abstract (en)
[origin: WO2012046136A1] An apparatus for measuring the quality of a tubular body (1) and the geometric position of an alteration or defect or impurities comprises a supply means for causing at least one first radiation beam and a second radiation beam to pass through a point of the object, for example light radiation generated by respective light sources, so that the directions of said first and second beams form a predetermined angle. The radiation beams are subjected each to four refractions when they cross curved surfaces. If in the point a defect is present, the position of the point can be found between a position X and Y on the two video cameras, whereas for an extended defect two limit positions (X1 and X2) (Y1 and Y2) are defined. By detecting, from known positions, the first light beam and the second light beam after that they have crossed the object, in order to determine the light alteration that occurs moving the same by the first and second light beam, a first and a second alteration signals are provided in case the alteration exceeds a predetermined threshold and with the program means a geometric position of the alteration in the object is determined. If the defect is at the surface, it can represent a crack capable of triggering a fracture, causing the object to be extremely vulnerable and destined to an easy break under a minimum action.
IPC 8 full level
G01N 21/958 (2006.01)
CPC (source: EP)
G01B 11/03 (2013.01); G01N 21/896 (2013.01); G01N 21/958 (2013.01)
Citation (search report)
See references of WO 2012046136A1
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 2012046136 A1 20120412; EP 2627995 A1 20130821; IT 1402103 B1 20130828; IT PI20100110 A1 20120409
DOCDB simple family (application)
IB 2011002374 W 20111010; EP 11817229 A 20111010; IT PI20100110 A 20101008