DE68911848T2 - Verfahren und Anordnung zur Verarbeitung elektrischer Signale. - Google Patents

Verfahren und Anordnung zur Verarbeitung elektrischer Signale.

Info

Publication number
DE68911848T2
DE68911848T2 DE89310138T DE68911848T DE68911848T2 DE 68911848 T2 DE68911848 T2 DE 68911848T2 DE 89310138 T DE89310138 T DE 89310138T DE 68911848 T DE68911848 T DE 68911848T DE 68911848 T2 DE68911848 T2 DE 68911848T2
Authority
DE
Germany
Prior art keywords
electrical signal
acoustic emissions
minimum level
variations
measured
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 - Lifetime
Application number
DE89310138T
Other languages
English (en)
Other versions
DE68911848D1 (de
Inventor
Trevor James Holroyd
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.)
Rolls Royce DSV Ltd
Original Assignee
Rolls Royce DSV 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
Application filed by Rolls Royce DSV Ltd filed Critical Rolls Royce DSV Ltd
Publication of DE68911848D1 publication Critical patent/DE68911848D1/de
Application granted granted Critical
Publication of DE68911848T2 publication Critical patent/DE68911848T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
DE89310138T 1988-10-22 1989-10-04 Verfahren und Anordnung zur Verarbeitung elektrischer Signale. Expired - Lifetime DE68911848T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888824793A GB8824793D0 (en) 1988-10-22 1988-10-22 Method & apparatus for processing electrical signals

Publications (2)

Publication Number Publication Date
DE68911848D1 DE68911848D1 (de) 1994-02-10
DE68911848T2 true DE68911848T2 (de) 1994-04-14

Family

ID=10645643

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89310138T Expired - Lifetime DE68911848T2 (de) 1988-10-22 1989-10-04 Verfahren und Anordnung zur Verarbeitung elektrischer Signale.

Country Status (6)

Country Link
US (1) US5005415A (de)
EP (1) EP0366286B1 (de)
JP (1) JPH02236424A (de)
AT (1) ATE99414T1 (de)
DE (1) DE68911848T2 (de)
GB (1) GB8824793D0 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9003878D0 (en) * 1990-02-21 1990-04-18 Stresswave Tech A method and apparatus for processing electrical signals
US5176032A (en) * 1990-02-21 1993-01-05 Stresswave Technology Limited Method and apparatus for processing electrical signals and a stress wave sensor
US5328460A (en) * 1991-06-21 1994-07-12 Pacesetter Infusion, Ltd. Implantable medication infusion pump including self-contained acoustic fault detection apparatus
US5637799A (en) * 1992-04-15 1997-06-10 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method and apparatus for evaluating multilayer objects for imperfections
US5625150A (en) * 1994-08-18 1997-04-29 General Electric Company Integrated acoustic leak detection sensor subsystem
US5633468A (en) * 1995-09-13 1997-05-27 The Babcock & Wilcox Company Monitoring of fuel particle coating cracking
US5827974A (en) * 1996-02-03 1998-10-27 Nussinovitch; Amos System for measuring the crispiness of materials
DE19647792A1 (de) * 1996-11-19 1998-05-28 Bosch Gmbh Robert Vorrichtung und Verfahren zur Körperschall-Güteprüfung
US5852793A (en) * 1997-02-18 1998-12-22 Dme Corporation Method and apparatus for predictive diagnosis of moving machine parts
US6101881A (en) * 1997-09-16 2000-08-15 Ut Automotive Dearborn, Inc. Non-contact locked terminal tester
US6155118A (en) * 1998-05-26 2000-12-05 Trw Inc. Apparatus for testing a device that generates an audible sound in a vehicle occupant compartment
ES2255240T3 (es) * 1999-05-19 2006-06-16 Vibro-Meter Sa Procedimiento y sistema de medida vibratoria combinada.
DE102005020901A1 (de) * 2005-05-04 2006-11-16 Siemens Ag Verfahren und System zur Diagnose von mechanischen, elektromechanischen oder fluidischen Komponenten
US10345273B2 (en) 2016-01-11 2019-07-09 Fisher Controls International Llc Methods and apparatus to verify operation of acoustic emission sensors
US10161919B2 (en) 2016-10-25 2018-12-25 Fisher Controls International Llc Acoustic emission sensors with integral acoustic generators
US10161912B2 (en) * 2016-01-11 2018-12-25 Fisher Controls International Llc Methods and apparatus to test acoustic emission sensors

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677072A (en) * 1970-10-30 1972-07-18 Gen Electric Damage detection method and apparatus for machine elements utilizing vibrations therefrom
US3913084A (en) * 1973-03-26 1975-10-14 Wisconsin Alumni Res Found Noise quality detector for electric motors or other machines
DE2713640A1 (de) * 1977-03-28 1978-10-12 Kraftwerk Union Ag Verfahren zur ueberwachung einer anlage und anordnung zur durchfuehrung des verfahrens
US4111035A (en) * 1977-11-07 1978-09-05 General Motors Corporation Engine knock signal generating apparatus with noise channel inhibiting feedback
CA1105604A (en) * 1978-06-07 1981-07-21 James H. Rogers Method and system for detecting plate clashing in disc refiners
US4304629A (en) * 1979-05-07 1981-12-08 Westinghouse Electric Corp. Object impact discriminator
JPS6064250A (ja) * 1983-09-20 1985-04-12 Niigata Eng Co Ltd 工具損傷検出装置
US4609994A (en) * 1984-01-16 1986-09-02 The University Of Manitoba Apparatus for continuous long-term monitoring of acoustic emission
JPS60201206A (ja) * 1984-03-26 1985-10-11 Omron Tateisi Electronics Co 工具摩耗度検出装置

Also Published As

Publication number Publication date
DE68911848D1 (de) 1994-02-10
ATE99414T1 (de) 1994-01-15
US5005415A (en) 1991-04-09
EP0366286B1 (de) 1993-12-29
EP0366286A3 (de) 1991-11-13
EP0366286A2 (de) 1990-05-02
JPH02236424A (ja) 1990-09-19
GB8824793D0 (en) 1988-11-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee