GB576275A - Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies - Google Patents

Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies

Info

Publication number
GB576275A
GB576275A GB42744A GB42744A GB576275A GB 576275 A GB576275 A GB 576275A GB 42744 A GB42744 A GB 42744A GB 42744 A GB42744 A GB 42744A GB 576275 A GB576275 A GB 576275A
Authority
GB
United Kingdom
Prior art keywords
coils
exciting
detecting
yoke
torsional oscillations
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
GB42744A
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.)
RAYMOND FORD HANSTOCK
High Duty Alloys Ltd
Original Assignee
RAYMOND FORD HANSTOCK
High Duty Alloys 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 RAYMOND FORD HANSTOCK, High Duty Alloys Ltd filed Critical RAYMOND FORD HANSTOCK
Priority to GB42744A priority Critical patent/GB576275A/en
Publication of GB576275A publication Critical patent/GB576275A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • 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
    • G01H1/10—Measuring characteristics of vibrations in solids by using direct conduction to the detector of torsional vibrations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

576,275. Vibration detectors and indicators. HIGH DUTY ALLOYS, Ltd., HANSTOCK, R. F., and MURRAY, A. Jan. 10, 1944, No. 427. [Class 40 (iv)] [Also in Group XIX] Apparatus for exciting or detecting torsional oscillations in an elastic body comprises an alternating- current coil system 2 having currentcarrying portions A, B parallel to the oscillation axis of the body and coils 3 carried on a yoke 4 to provide a magnetic field approximately at right angles to the axis of oscillation, the induced currents cutting the magnetic field to produce an alternating torque. The coils 3 and yoke 4 may be replaced by a permanent magnet. For detecting and indicating torsional vibrations, the coils 2 are connected through an amplifier to a cathode-ray oscillograph or to a wave-analyser. If the body 1 is made of non-conducting material, it may be coated with a metal.
GB42744A 1944-01-10 1944-01-10 Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies Expired GB576275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB42744A GB576275A (en) 1944-01-10 1944-01-10 Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB42744A GB576275A (en) 1944-01-10 1944-01-10 Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies

Publications (1)

Publication Number Publication Date
GB576275A true GB576275A (en) 1946-03-27

Family

ID=9704164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42744A Expired GB576275A (en) 1944-01-10 1944-01-10 Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies

Country Status (1)

Country Link
GB (1) GB576275A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969549C (en) * 1951-07-02 1958-06-19 Philips Nv Electromechanical vibrator performing torsional vibrations
US2995928A (en) * 1956-03-28 1961-08-15 Prochazka Miroslav Indicator of torsional oscillations
US3697867A (en) * 1969-06-19 1972-10-10 Cavitron Corp Vibration sensor utilizing eddy currents induced in member vibrating in the field of a magnet
CN102996322A (en) * 2012-12-05 2013-03-27 河海大学常州校区 Wave energy power generator
CN114552934A (en) * 2021-10-27 2022-05-27 厦门腾威胜检测科技有限公司 Electromagnetic control type high-frequency fatigue testing machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969549C (en) * 1951-07-02 1958-06-19 Philips Nv Electromechanical vibrator performing torsional vibrations
US2995928A (en) * 1956-03-28 1961-08-15 Prochazka Miroslav Indicator of torsional oscillations
US3697867A (en) * 1969-06-19 1972-10-10 Cavitron Corp Vibration sensor utilizing eddy currents induced in member vibrating in the field of a magnet
CN102996322A (en) * 2012-12-05 2013-03-27 河海大学常州校区 Wave energy power generator
CN114552934A (en) * 2021-10-27 2022-05-27 厦门腾威胜检测科技有限公司 Electromagnetic control type high-frequency fatigue testing machine

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