Global Patent Index - EP 1097374 A2

EP 1097374 A2 2001-05-09 - 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

EP 1097374 A2 (DE)

Application

EP 99948656 A

Priority

  • DE 9902230 W
  • DE 19833019 A

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 (main, further and additional classification)

G01N 29/04; G01N 29/26

IPC 8 full level (invention and additional information)

G01N 29/04 (2006.01); G01N 29/22 (2006.01)

CPC (invention and additional information)

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 0005576A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0005576 A2 20000203; WO 0005576 A3 20000504; EP 1097374 A2 20010509

INPADOC legal status


2004-07-07 [18R] REFUSED

- Effective date: 20040203

2003-12-10 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: INTELLIGENDT SYSTEMS & SERVICES GMBH & CO.

2002-04-17 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020228

2002-03-27 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: SIEMENS AKTIENGESELLSCHAFT

2002-03-27 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: INTELLIGENDT SYSTEMS & SERVICES GMBH & CO KG

2002-03-06 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: INTELLIGENDT SYSTEMS & SERVICES GMBH & CO KG

2001-05-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010112

2001-05-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE