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SU565248A1 - Modulation vortex-current transducer - Google Patents

Modulation vortex-current transducer

Info

Publication number
SU565248A1
SU565248A1 SU7402000276A SU2000276A SU565248A1 SU 565248 A1 SU565248 A1 SU 565248A1 SU 7402000276 A SU7402000276 A SU 7402000276A SU 2000276 A SU2000276 A SU 2000276A SU 565248 A1 SU565248 A1 SU 565248A1
Authority
SU
USSR - Soviet Union
Prior art keywords
vortex
modulation
current transducer
moscow
fedotov
Prior art date
Application number
SU7402000276A
Other languages
Russian (ru)
Inventor
Леонид Михайлович Федотов
Евгений Георгиевич Ревков
Владимир Яковлевич Силкин
Original Assignee
Предприятие П/Я Р-6303
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 Предприятие П/Я Р-6303 filed Critical Предприятие П/Я Р-6303
Priority to SU7402000276A priority Critical patent/SU565248A1/en
Application granted granted Critical
Publication of SU565248A1 publication Critical patent/SU565248A1/en

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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Description

вихревые токи. В месте размещени  отрезка металлической леиты формируетс  локальное неоднородное магнитное поле. В случае отсутстви  трещин в -контролируемом цилиндре при вращении модул тора 2 вокруг издеЛИЯ не по вл етс  сигнал разбаланса на выходе дифференциально .включенных измерительных катушек. Ориентаци  отрезка металлической ленты в пределах от 30 до 60° относительно оси вращени  приводит к тому, что локальное неоднородное поле взаимодействует с полем дефекта сначала преимущественно под одной катушкой, затем под другой , что обуславливает по вление сигнала раз-баланса, по которому -суд т о наличии прот женной трещины.eddy currents. A local non-uniform magnetic field is formed at the location of the metal leita section. If there are no cracks in the controlled cylinder, when the modulator 2 rotates around the product, there is no imbalance signal at the output of the differentially connected measuring coils. The orientation of the metal strip in the range from 30 to 60 ° relative to the axis of rotation causes the local non-uniform field to interact with the field of the defect, primarily primarily under one coil and then under the other, which causes the appearance of a time-balance signal. about the presence of an extended crack.

Claims (2)

1.Справочник по ред. Р. Мак-Мастера «Неразрущающие испытани , Москва, «Энерги , 1961, кн. 2, стр. 161.1. Handbook of ed. R. Mac-Masters "Non-destructive testing, Moscow," Energy, 1961, Vol. 2, p. 161. 2.Федотов Л. М. Диссертаци  на соискание степени кандидата технических наук. Исследование и разработка электромагнитных дефектоскопов с проходными преобразовател ми применительно к услови м поточного производства, Москва, 4969, стр. 138.2. Fedotov LM Thesis for the degree of candidate of technical sciences. Research and development of electromagnetic flaw detectors with feedthrough transducers in relation to the conditions of mass production, Moscow, 4969, p. 138.
SU7402000276A 1974-02-26 1974-02-26 Modulation vortex-current transducer SU565248A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7402000276A SU565248A1 (en) 1974-02-26 1974-02-26 Modulation vortex-current transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7402000276A SU565248A1 (en) 1974-02-26 1974-02-26 Modulation vortex-current transducer

Publications (1)

Publication Number Publication Date
SU565248A1 true SU565248A1 (en) 1977-07-15

Family

ID=20577103

Family Applications (1)

Application Number Title Priority Date Filing Date
SU7402000276A SU565248A1 (en) 1974-02-26 1974-02-26 Modulation vortex-current transducer

Country Status (1)

Country Link
SU (1) SU565248A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000412A1 (en) * 1984-06-27 1986-01-16 Ltv Steel Company, Inc. Eddy current flaw detector having rotatable field defining sleeve
WO1986000411A1 (en) * 1984-06-27 1986-01-16 Ltv Steel Company, Inc. Eddy current flaw detector method and apparatus
US4644271A (en) * 1985-02-25 1987-02-17 Ltv Steel Company, Inc. Method and apparatus for examining a workpiece
US4906927A (en) * 1987-11-09 1990-03-06 Nippon Nuclear Fuel Development Co., Ltd. Eddy current flaw detecting apparatus and method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000412A1 (en) * 1984-06-27 1986-01-16 Ltv Steel Company, Inc. Eddy current flaw detector having rotatable field defining sleeve
WO1986000411A1 (en) * 1984-06-27 1986-01-16 Ltv Steel Company, Inc. Eddy current flaw detector method and apparatus
US4673879A (en) * 1984-06-27 1987-06-16 Rupublic Steel Corporation Eddy current flaw detector having rotatable field defining sleeve for selectively enhancing induced eddy currents in a workpiece
US4683430A (en) * 1984-06-27 1987-07-28 Republic Steel Corporation Eddy current flaw detector method and apparatus having a rotatable high permeability flux concentrator encircling a workpiece
US4644271A (en) * 1985-02-25 1987-02-17 Ltv Steel Company, Inc. Method and apparatus for examining a workpiece
US4906927A (en) * 1987-11-09 1990-03-06 Nippon Nuclear Fuel Development Co., Ltd. Eddy current flaw detecting apparatus and method thereof

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