公开(公告)号：AU726888B2

公开(公告)日：2000-11-23

申请号：AU2686897

申请日：1997-05-16

Applicant: TECH RESOURCES PTY LTD

Inventor： HAY SID ,  STREET ROBERT ,  VANSELOW ROBERT GORDON

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87

Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.

公开(公告)号：CA2255001C

公开(公告)日：2005-06-28

申请号：CA2255001

申请日：1997-05-16

Applicant: TECH RESOURCES PTY LTD

Inventor： STREET ROBERT ,  VANSELOW ROBERT GORDON ,  HAY SID

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87

Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetised by touch magnetisation using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue seventies in rail along a railway.

公开(公告)号：CA2255001A1

公开(公告)日：1997-11-27

申请号：CA2255001

申请日：1997-05-16

Applicant: TECH RESOURCES PTY LTD

Inventor： HAY SID ,  VANSELOW ROBERT GORDON ,  STREET ROBERT

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87

Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetised by touch magnetisation using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.

公开(公告)号：ZA9704197B

公开(公告)日：1997-12-10

申请号：ZA9704197

申请日：1997-05-15

Applicant: TECH RESOURCES PTY LTD

Inventor： HAY SID ,  STREET ROBERT ,  VANSELOW ROBERT GORDON

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87 ,  G01N

CPC classification number: G01N27/82 ,  B61K9/10

公开(公告)号：AU2686897A

公开(公告)日：1997-12-09

申请号：AU2686897

申请日：1997-05-16

Applicant: TECH RESOURCES PTY LTD

Inventor： HAY SID ,  STREET ROBERT ,  VANSELOW ROBERT GORDON

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87

Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.

公开(公告)号：ZA974197B

公开(公告)日：1997-12-10

申请号：ZA974197

申请日：1997-05-15

Applicant: TECH RESOURCES PTY LTD

Inventor： HAY SID ,  STREET ROBERT ,  VANSELOW ROBERT GORDON

IPC: B61K9/10 ,  G01N27/82 ,  G01N27/83 ,  G01N27/87 ,  G01N

Abstract: A method and apparatus for high speed magnetic detection of surface fatigue cracks in railway rails. The magnetic material of the rail is magnetized by touch magnetization using a permanent magnet (31), leaving a remanent magnetic field. A sensor head (30, 50) having a plurality of Hall effect sensors (32) senses stray flux generated in the vicinity of surface fatigue in the rail head by the remanent magnetic field. The sensor head (30, 50) may incorporate a proximity sensor (60) to compensate for variations in sensor height. The apparatus may be mounted on a conventional track recording vehicle (TRV) for use in routinely monitoring the surface fatigue severities in rail along a railway.