EP 1097374 A2 20010509 - METHOD AND DEVICES FOR DETECTING A CRACK IN A RAILWAY WHEEL
Title (en)
METHOD AND DEVICES FOR DETECTING A CRACK IN A RAILWAY WHEEL
Title (de)
VERFAHREN UND VORRICHTUNGEN ZUR DETEKTION EINES RISSES IN EINEM EISENBAHNRAD
Title (fr)
PROCEDE ET DISPOSITIFS POUR DETECTER D'UNE FISSURE DANS UNE ROUE DE CHEMIN DE FER
Publication
Application
Priority
- DE 9902230 W 19990716
- DE 19833019 A 19980723
Abstract (en)
[origin: WO0005576A2] The invention relates to a method for detecting a crack (9) in a railway wheel (1), according to which by means of a first transmitting ultrasonic transducer (31) a first ultrasonic wave (41) is transmitted substantially tangentially to the wheel circumference through a face (27) of the railway wheel (1), at an angle to the face (27). The transmitted ultrasonic wave (41) is received at the level of said face (27). A first angle of acoustic irradiation ( alpha 1) and a first angle of reception ( beta 1) are selected such that the incoming ultrasonic wave (41) can be received if it is reflected by the opposite face (43) and deflected backwards at the crack (9). The invention also relates to devices which are especially suited for carrying out said method. Such a device notably comprises a test bogie (74) which is positioned next to or underneath a railway vehicle (70) moving at low speed and can be displaced in the direction of travel (78) of said vehicle. A probe (29A, 29B) can be fixed to said test bogie and placed onto the face (27) situated on the outside or inside in relation to the railway vehicle (70).
IPC 1-7
IPC 8 full level
G01N 29/04 (2006.01); G01N 29/22 (2006.01)
CPC (source: EP)
G01N 29/043 (2013.01); G01N 29/225 (2013.01); G01N 2291/0422 (2013.01); G01N 2291/044 (2013.01); G01N 2291/056 (2013.01); G01N 2291/102 (2013.01); G01N 2291/2634 (2013.01)
Citation (search report)
See references of WO 0005576A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0005576 A2 20000203; WO 0005576 A3 20000504; EP 1097374 A2 20010509
DOCDB simple family (application)
DE 9902230 W 19990716; EP 99948656 A 19990716