SU211856A1 - DEFECTOSCOPE WORKING WITH REFLECTED MICRO-RADIO WAVES - Google Patents
DEFECTOSCOPE WORKING WITH REFLECTED MICRO-RADIO WAVESInfo
- Publication number
- SU211856A1 SU211856A1 SU1143719A SU1143719A SU211856A1 SU 211856 A1 SU211856 A1 SU 211856A1 SU 1143719 A SU1143719 A SU 1143719A SU 1143719 A SU1143719 A SU 1143719A SU 211856 A1 SU211856 A1 SU 211856A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- working
- waveguide
- defectoscope
- radio waves
- reflected
- Prior art date
Links
- 230000035882 stress Effects 0.000 description 3
Description
Известен дефектоскоп, работающий с помощью отраженных микрорадиоволн, по авт. св. № 179977, содержащий генератор микрорадиоволн , излучающий и приемный волноводы, аттенюатор, фазовращатель и детектор.Предлагаемый дефектоскоп отличаетс от известного тем, что его рабочие волноводы установлены так, что плоскость пол ризации излучающего волновода перпендикул рна плоскости пол ризации приемного волновода. Это позвол ет определить внутренние напр жени в контролируемом изделии.Known flaw detector that works with the help of reflected microwaves, according to ed. St. No. 179977, containing a microradiowave generator, emitting and receiving waveguides, an attenuator, a phase shifter and a detector. The proposed flaw detector differs from the known one in that its working waveguides are installed so that the polarization plane of the radiating waveguide is perpendicular to the polarization plane of the receiving waveguide. This allows the internal stresses in the monitored product to be determined.
На чертеже изображена схема предлагаемого дефектоскопа.The drawing shows the scheme of the proposed flaw detector.
Дефектоскоп содержит генератор 1, соединенный волноводным трактом с излучающим волноводом 2. Между ними установлено разв зывающее устройство .3 и направленный ответвитель 4 с детекторной головкой 5, а также разветвитель 6. К разветвителю присоединен аттенюатор 7, гибкий волновод 8 и фазовращатель Р, который сочленен со вторым разветБителем 10. Разветвитель 10 соединен с детекторной головкой 11, предусилителем 12 и приемным волноводом 13. Все устройство расположено над обследуемым изделием 14.The flaw detector contains a generator 1 connected by a waveguide path to the radiating waveguide 2. Between them an isolating device .3 and a directional coupler 4 with a detector head 5 are installed, as well as a splitter 6. An attenuator 7, a flexible waveguide 8 and a phase shifter P, which is articulated, are connected to the splitter with the second splitter 10. Splitter 10 is connected to the detector head 11, the preamplifier 12 and the receiving waveguide 13. The entire device is located above the inspected product 14.
Дефектоскоп работает следующим образом. Поток энергии, создаваемый генератором /, направл етс к разветвителю 6 и расчлен етс на две части. Перва часть потока энергииThe flaw detector works as follows. The energy flow generated by the generator / is directed to the splitter 6 and is divided into two parts. The first part of the flow of energy
излучаетс волноводом 2, втора часть проходит через аттенюатор 7, гибкий волновод 6 фазовращатель 9 и разветвитель 10 к детекторной головке //. Отраженна от обследуемого издели 14 энерги поступает на приемный волновод. Далее, в результате воздействи обоих сигналов на детекторную головку И (одного, прищедщего от приемного волновода 13, г. второго - от гибкого волновода 8), на входе предусилител 12 образуетс некотора разность потенциалов.emitted by waveguide 2, the second part passes through the attenuator 7, the flexible waveguide 6 phase shifter 9 and splitter 10 to the detector head //. The energy reflected from the examined product 14 is fed to the receiving waveguide. Further, as a result of the effect of both signals on the detector head I (one, pinching from the receiving waveguide 13, the second from the flexible waveguide 8), a certain potential difference forms at the input of the preamplifier 12.
Волны, излучаемые волноводом 2, попадают на исследуемое изделие 14 и отражаютс от него. Благодар своей относительно больщой длины, поток волн, проход щих внутри обследуемого издели , охватывает достаточно.больщие объемы, в силу чего возникающие под действием нагрузок напр жени в объеме исследуемого образца оказывают воздействие на структуру пол отраженных волн.The waves emitted by waveguide 2 fall on the test article 14 and are reflected from it. Due to its relatively large length, the flow of waves passing inside the product being inspected covers sufficiently large volumes, as a result of which the loads generated by the stress in the volume of the test sample affect the structure of the reflected waves.
№ 179977, отличающийс тем, что, с целью определени внутренних напр жений в контролируемом изделии, рабочие волноводыNo. 179977, characterized in that, in order to determine the internal stresses in the monitored product, the working waveguides
установлены так, что плоскость пол ризации излучающего волновода перпендикул рна плоскости пол ризации приемного волновода.are set so that the plane of polarization of the radiating waveguide is perpendicular to the plane of polarization of the receiving waveguide.
Publications (1)
Publication Number | Publication Date |
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SU211856A1 true SU211856A1 (en) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4156843A (en) * | 1978-03-13 | 1979-05-29 | Strandberg Engineering Laboratories, Inc. | Microwave moisture indicator and control |
US4500835A (en) * | 1978-06-01 | 1985-02-19 | A. Ahlstrom Osakeyhtio | Method and apparatus for detecting grain direction in wood, particularly in lumber |
US4581575A (en) * | 1983-06-03 | 1986-04-08 | Kanzaki Paper Manufacturing Co., Ltd. | Method and apparatus for measuring orientation of constituents of webs or sheets |
US4607212A (en) * | 1982-09-10 | 1986-08-19 | A.Ahlstrom Osakeyhtio | Method and apparatus for detection of knots or the like in sawn lumber |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4156843A (en) * | 1978-03-13 | 1979-05-29 | Strandberg Engineering Laboratories, Inc. | Microwave moisture indicator and control |
US4500835A (en) * | 1978-06-01 | 1985-02-19 | A. Ahlstrom Osakeyhtio | Method and apparatus for detecting grain direction in wood, particularly in lumber |
US4607212A (en) * | 1982-09-10 | 1986-08-19 | A.Ahlstrom Osakeyhtio | Method and apparatus for detection of knots or the like in sawn lumber |
US4581575A (en) * | 1983-06-03 | 1986-04-08 | Kanzaki Paper Manufacturing Co., Ltd. | Method and apparatus for measuring orientation of constituents of webs or sheets |
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