GB1056088A - A method of and apparatus for measuring the vibratory damping of a body - Google Patents

A method of and apparatus for measuring the vibratory damping of a body

Info

Publication number
GB1056088A
GB1056088A GB3284965A GB3284965A GB1056088A GB 1056088 A GB1056088 A GB 1056088A GB 3284965 A GB3284965 A GB 3284965A GB 3284965 A GB3284965 A GB 3284965A GB 1056088 A GB1056088 A GB 1056088A
Authority
GB
United Kingdom
Prior art keywords
stage
measuring
darlington pair
vibratory damping
output
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
GB3284965A
Inventor
Norman Bernard Ireland
William James Parkhouse
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 PLC
Original Assignee
Rolls Royce PLC
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 PLC filed Critical Rolls Royce PLC
Priority to GB3284965A priority Critical patent/GB1056088A/en
Publication of GB1056088A publication Critical patent/GB1056088A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/08—Detecting presence of flaws or irregularities
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02827—Elastic parameters, strength or force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2693—Rotor or turbine parts

Abstract

1,056,088. Amplifiers. ROLLS-ROYCE Ltd. July 30, 1965, No. 32849/65. Heading H3T. [Also in Division G4] The output of a piezo-electric crystal 17, Fig. 3, is amplified by an electrometer valve V 1 and then coupled via an emitter follower T 6 and a transformer TR2 to a two-stage T 1 , T 2 amplifier, Fig. 4, and then via a full-wave rectifier to a Darlington pair T 4 , T 5 . The circuit forms part of a vibratory damping measuring system in which cycles of oscillations taken from stage T, are counted for the period during which the rectified output from the Darlington pair lies between two pre-set levels.
GB3284965A 1965-07-30 1965-07-30 A method of and apparatus for measuring the vibratory damping of a body Expired GB1056088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3284965A GB1056088A (en) 1965-07-30 1965-07-30 A method of and apparatus for measuring the vibratory damping of a body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3284965A GB1056088A (en) 1965-07-30 1965-07-30 A method of and apparatus for measuring the vibratory damping of a body

Publications (1)

Publication Number Publication Date
GB1056088A true GB1056088A (en) 1967-01-25

Family

ID=10344922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3284965A Expired GB1056088A (en) 1965-07-30 1965-07-30 A method of and apparatus for measuring the vibratory damping of a body

Country Status (1)

Country Link
GB (1) GB1056088A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744299A (en) * 1970-10-28 1973-07-10 Diamond Int Corp Crack detector
US4020678A (en) * 1974-08-12 1977-05-03 Gunter Laue Method and system for testing of individual gear teeth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744299A (en) * 1970-10-28 1973-07-10 Diamond Int Corp Crack detector
US4020678A (en) * 1974-08-12 1977-05-03 Gunter Laue Method and system for testing of individual gear teeth

Similar Documents

Publication Publication Date Title
GB1089953A (en) Apparatus for measuring the circular dichroism of optically active substances
GB1056088A (en) A method of and apparatus for measuring the vibratory damping of a body
GB1076798A (en) Closed loop servo system for electro-optical sensing apparatus
GB900303A (en) Compensating method and apparatus for vibration exciters
FR1197455A (en) Device for amplifying, generating or modulating electrical oscillations
GB900302A (en) Compensating method and apparatus for vibration exciters
GB1161002A (en) Improvements in and relating to Hearing Aids
GB1065326A (en)
GB806650A (en) Improvements in or relating to flange nuts
GB762839A (en) Improved trestle
FR1262265A (en) Device comprising an amplifier provided with an output amplification stage
GB1245627A (en) Improvements in or relating to a method and apparatus for shaping a waveform
GB1134753A (en) An apparatus for measuring the volume of dead space air and the total volume of air exhaled in deep breathing
JPS53105962A (en) Voltage amplifier
GB789726A (en) Improvements relating to electro-mechanical vibrators
GB788432A (en) Device for damping the oscillating elements of electromechanical apparatus
GB1104122A (en) Improvements in or relating to capacitor microphone and amplifier combinations
JPS5292460A (en) Charge amplifier
GB1271509A (en) Improvements in or relating to amplifier arrangements
GB622962A (en) Improvements in or relating to circuits for operating detecting and/or locating devices
JPS5627557A (en) Side-tone preventing circuit
GB1009981A (en) Improvements relating to feedback amplifiers
GB898162A (en) Fluid pressure responsive apparatus and servo apparatus therefor
CH519487A (en) Optically active oestrone alkyl ethers
GB834206A (en) Method of and apparatus for straightening tubing