GB1514792A - Device for detecting damage to rotators - Google Patents

Device for detecting damage to rotators

Info

Publication number
GB1514792A
GB1514792A GB2765977A GB2765977A GB1514792A GB 1514792 A GB1514792 A GB 1514792A GB 2765977 A GB2765977 A GB 2765977A GB 2765977 A GB2765977 A GB 2765977A GB 1514792 A GB1514792 A GB 1514792A
Authority
GB
United Kingdom
Prior art keywords
peak detector
signal
vibration
damage
filtered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2765977A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP49079111A external-priority patent/JPS599842B2/en
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to GB2765977A priority Critical patent/GB1514792A/en
Publication of GB1514792A publication Critical patent/GB1514792A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • G01M13/045—Acoustic or vibration analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

1514792 Vibration measurement NIPPON SEIKO KK 10 July 1975 27659/77 Divided out of 1514791 Heading G1G For detecting damage in a rotator, e.g. a ballbearing, the cyclically-varying vibration produced as it is rotated is converted to an electrical signal which is applied to a peak detector the D.C. output level of which is periodically reset to zero. A bandpass filter extracts an A.C. component of the varying peak detector output level, which component is indicative of the degree of damage. In the described embodiment the amplified output 1 of a vibration pick-up (microphone) is filtered to remove low frequency components. The filtered signal 2, after AGC amplification, is passed to the peak detector, Fig. 3, (not shown) which is reset to zero at least once in each cycle of variation of the vibration. The peak detector output 4 is band-pass filtered to give A.C. signal 5 indicative of damage. Signal 5 drives a meter, or is rectified for application to a comparator for classifying the rotator as damaged or not.
GB2765977A 1974-07-12 1975-07-10 Device for detecting damage to rotators Expired GB1514792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2765977A GB1514792A (en) 1974-07-12 1975-07-10 Device for detecting damage to rotators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP49079111A JPS599842B2 (en) 1974-07-12 1974-07-12 Damage detection device for rotating bodies
GB2765977A GB1514792A (en) 1974-07-12 1975-07-10 Device for detecting damage to rotators

Publications (1)

Publication Number Publication Date
GB1514792A true GB1514792A (en) 1978-06-21

Family

ID=26258930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2765977A Expired GB1514792A (en) 1974-07-12 1975-07-10 Device for detecting damage to rotators

Country Status (1)

Country Link
GB (1) GB1514792A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104658A (en) * 1981-08-26 1983-03-09 Hitachi Ltd Detecting rubbing in rotary machines
GB2141232A (en) * 1980-06-09 1984-12-12 Mitsubishi Heavy Ind Ltd Dry cleaning machine
GB2146119A (en) * 1983-09-05 1985-04-11 Froude Consine Ltd Detection of fuel injection
EP0227138A1 (en) * 1985-11-28 1987-07-01 SKF Industrial Trading & Development Co, B.V. Means for detecting faults or defects in moving machine parts
GB2193316A (en) * 1984-03-22 1988-02-03 France Etat Acoustic detection of aircraft
EP0297729A2 (en) * 1987-06-03 1989-01-04 Koyo Seiko Co., Ltd. Apparatus for detecting a failure in bearings
GB2209397A (en) * 1987-10-02 1989-05-10 Servo Corp Of America Acoustic detection of bearing defects
WO1994013968A2 (en) * 1992-12-09 1994-06-23 United Technologies Corporation Bearing assembly monitoring system
WO2000051869A1 (en) * 1999-03-04 2000-09-08 Skf Industrie S.P.A. A railway axle hub unit
WO2004068100A1 (en) * 2003-01-31 2004-08-12 Fag Kugelfischer Ag Method for detecting structure-borne noise events in a roller bearing
EP3217170A1 (en) * 2016-03-08 2017-09-13 General Electric Company Engine health monitoring using acoustic sensors
US10266278B2 (en) 2016-10-11 2019-04-23 Unison Industries, Llc Starter issue detection

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141232A (en) * 1980-06-09 1984-12-12 Mitsubishi Heavy Ind Ltd Dry cleaning machine
GB2104658A (en) * 1981-08-26 1983-03-09 Hitachi Ltd Detecting rubbing in rotary machines
GB2146119A (en) * 1983-09-05 1985-04-11 Froude Consine Ltd Detection of fuel injection
GB2193316A (en) * 1984-03-22 1988-02-03 France Etat Acoustic detection of aircraft
EP0227138A1 (en) * 1985-11-28 1987-07-01 SKF Industrial Trading & Development Co, B.V. Means for detecting faults or defects in moving machine parts
AU598381B2 (en) * 1987-06-03 1990-06-21 Kawasaki Steel Corporation Apparatus for detecting a failure in bearings
EP0297729A3 (en) * 1987-06-03 1989-11-23 Koyo Seiko Co., Ltd. Apparatus for detecting a failure in bearings
EP0297729A2 (en) * 1987-06-03 1989-01-04 Koyo Seiko Co., Ltd. Apparatus for detecting a failure in bearings
GB2209397A (en) * 1987-10-02 1989-05-10 Servo Corp Of America Acoustic detection of bearing defects
GB2209397B (en) * 1987-10-02 1991-12-11 Servo Corp Of America On-line acoustic detection of bearing defects
WO1994013968A2 (en) * 1992-12-09 1994-06-23 United Technologies Corporation Bearing assembly monitoring system
WO1994013968A3 (en) * 1992-12-09 1994-10-27 United Technologies Corp Bearing assembly monitoring system
WO2000051869A1 (en) * 1999-03-04 2000-09-08 Skf Industrie S.P.A. A railway axle hub unit
US6672681B1 (en) 1999-03-04 2004-01-06 Skf Industrie S.P.A. Railway axle hub unit
WO2004068100A1 (en) * 2003-01-31 2004-08-12 Fag Kugelfischer Ag Method for detecting structure-borne noise events in a roller bearing
CN100510678C (en) * 2003-01-31 2009-07-08 法格库格尔菲舍尔无限责任公司 Method for detecting structure-borne noise events in a roller bearing
US7599804B2 (en) 2003-01-31 2009-10-06 Fag Kugelfischer Ag Method for detecting structure-borne noise events in a roller bearing
EP3217170A1 (en) * 2016-03-08 2017-09-13 General Electric Company Engine health monitoring using acoustic sensors
US10266278B2 (en) 2016-10-11 2019-04-23 Unison Industries, Llc Starter issue detection

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee