• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Das Verfahren zur Feststellung von Materialfehlern in Hohlkörpern bedient sich der Innenmessung mittels Ultraschall. Der Ultraschallprüfkopf arbeitet gleichzeitig als Sender und Empfänger. Er ist in einer mit Kupplungsflüssigkeit gefüllten, drehbaren und verschiebbaren Halterung exzentrisch versetzt angebracht. Mittels Dichtungen, die den gesamten Querschnitt des Innendurchmessers des Hohlkörpers abdichten, wird ein Austritt von Kupplungsflüssigkeit verhindert. Sobald der Ultraschallprüfkopf in die Nähe eines Materialfehlers gelangt, empfängt er von diesem reflektierte Ultraschallwellen. Diese Signale werden auf einem Bildschrim dargestellt. Aus der Intensität und Form der empfangenen Signale kann der Materialfehler nicht nur lokalisiert, sondern auch die Art (Riß oder Lunker) und der Umfang (Tiefe) bestimmt werden.
    公开号:SU1326201A3
    申请号:SU813237748
    申请日:1981-01-30
    公开日:1987-07-23
    发明作者:Шмитц Ханс-Петер；Шлепер Бернард
    申请人:Рурхеми Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to non-destructive testing of products using ultrasound and can be used to detect defects on the surface and in the walls of pipes.
    The aim of the invention is to improve the accuracy of detection of defects by choosing the optimal direction for the introduction of ultrasonic vibrations into the pipe.
    The drawing shows the control circuit of defects in the pipe according to the proposed method.
    The diagram shows a transducer 1 installed in a test tube 2 filled with an immersion liquid 3 at an angle of, formed by the direction of propagation of the torsional vibrations and perpendicular to the tangent at the point A of their entry, as well as defect 4 in the test tube 2.
    The pomp of the way lies in
    five
    ten
    in the plane perpendicular to the longitudinal axis of the pipe 2, and emit pulses of ultrasonic vibrations at an angle of 25 (the optimum angle) formed by the direction of propagation of ultrasonic vibrations and perpendicular to the tangent at point A of their entry into the inner surface of the pipe 2. In this case, the transducer 1 rotate around the longitudinal axis of the pipe by 360 ° and receive reflected echo pulses of ultrasonic vibrations. When ultrasonic pulses hit 15, a pulse echo appears on the flaw detector screen (not shown), the magnitude and shape of which determine the location and size of the defect 4. Then the transducer 1 is moved along the longitudinal axis of the test tube 2 to the next position then the defects on this section of the pipe 2 are monitored. The process is repeated until
    20
    that at an input angle of about / 15-35 ° ultra-25, as long as the whole pipe is not procontrolled to the internal one, it is cast for defects.
    the pipe surface angle / 9 of refraction of ultrasonic vibrations in the pipe material is less than 90. As a result, the accuracy of detecting defects located on the surface and in the walls of the pipe is significantly increased, due to the absence of echo signals reflected from the interface of the material
    pipe and air.
    At input angles of 35 d, the accuracy of detecting defects deteriorates significantly, since along with the echo signals from the defect, echoes reflected from the interface between the pipe material and air, appear, making it difficult to detect defects in a controlled the pipe.
    The ultrasonic method for detecting defects in a tube is carried out as follows.
    The transducer 5) gas generator 1 is introduced into the interior of the pipe 2 filled with the immersion liquid 3, and is installed so that its longitudinal axis is
    in the plane perpendicular to the longitudinal axis of the pipe 2, and emit pulses of ultrasonic vibrations at an angle of 25 (the optimum angle) formed by the direction of propagation of ultrasonic vibrations and perpendicular to the tangent at point A of their entry into the inner surface of the pipe 2. In this case, the transducer 1 rotate around the longitudinal axis of the pipe by 360 ° and receive reflected echo pulses of ultrasonic vibrations. When ultrasonic pulses hit a defect 4, an echo pulse appears on the flaw detector screen (not shown), the magnitude and shape of which determine the location and size of the defect 4. Then the transducer 1 is moved along the longitudinal axis of the test tube 2 to the next position, then the defects at this section of the pipe 2 are monitored. The process is repeated until
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The ultrasonic method for detecting defects in a tube, which consists in using ultrasound pulses to introduce ultrasonic vibrations from the inside of the tube at an angle to its inner surface, rotate the transducer around the longitudinal axis of the tube filled with immersion liquid, and pulses of ultrasonic vibrations, the parameters of which determine the presence of defects, about the tly with the fact that, in order to improve the detection accuracy, the input of pulses of ultrasonic oscillations It is carried out in a plane perpendicular to the longitudinal axis of the pipe at an angle of 15-35, formed by the direction of propagation of ultrasonic vibrations and perpendicular to the tangent at the point of their entry.
    Editor I. Shulla
    Compiled by S. Volkov Tehred V. Kadar
    Order 3131/59 Circulation 776 Subscription
    VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035
    Production and printing company, Uzhgorod, Projecto st., 4
    Proofreader E. Roshko
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    同族专利:
    公开号 | 公开日
    EP0033484B1|1987-04-08|
    US4453410A|1984-06-12|
    EP0033484A3|1982-04-28|
    JPS56114758A|1981-09-09|
    DE3003349A1|1981-08-06|
    DE3176094D1|1987-05-14|
    EP0033484A2|1981-08-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3121324A|1961-01-11|1964-02-18|Automation Ind Inc|Ultrasonic inspection apparatus|
    US3417609A|1965-07-26|1968-12-24|Automation Ind Inc|Ultrasonic inspection transducer|
    DE1573616A1|1965-12-01|1970-07-23|J Und H Krautkraemer Ges Fuer|Ultrasonic testing device with rotating test heads|
    US3583211A|1968-11-18|1971-06-08|Branson Instr|Pulse-echo ultrasonic test apparatus|
    JPS4844387B1|1968-11-19|1973-12-24|
    US3584504A|1969-10-03|1971-06-15|Amf Inc|Ultrasonic inspection apparatus and method for nondestructive testing of tubular member having varying inner diameter|
    SU740163A3|1973-12-26|1980-06-05|Комиссариат А Л"Энержи Атомик |Deflector|
    FR2359420B1|1976-07-21|1978-12-15|Commissariat Energie Atomique|
    US4174636A|1977-07-25|1979-11-20|Pagano Dominick A|Two wheel ultrasonic rail testing system and method|
    JPS5494392A|1978-01-10|1979-07-26|Mitsubishi Heavy Ind Ltd|Ultrasonic flaw detector of small-diameter thin-wall tube interior|
    JPS54109490A|1978-02-15|1979-08-28|Hitachi Ltd|Ultrasonic probe of tube insertion type|
    US4269066A|1979-08-16|1981-05-26|Fischer Christopher L|Ultrasonic sensing apparatus|
    US4388831A|1981-02-20|1983-06-21|General Electric Company|Ultrasonic probe for nondestructive inspection|US4388831A|1981-02-20|1983-06-21|General Electric Company|Ultrasonic probe for nondestructive inspection|
    US4663727A|1984-04-19|1987-05-05|Rochester Gas & Electric Corp.|Ultrasonic inspection system|
    JPH0643991B2|1985-05-30|1994-06-08|株式会社検査技研|Jig for moving / centering the pipe|
    US5189915A|1990-11-21|1993-03-02|Reinhart & Associates, Inc.|Single mode ultrasonic inspection method and apparatus|
    US5392652A|1992-04-07|1995-02-28|Lambert, Macgill, Thomas, Inc.|Method and apparatus for inspection of metal objects utilizing variable angle ultrasonic transducer|
    US6424922B1|1998-07-30|2002-07-23|Don E. Bray|Ultrasonic stress measurement using the critically refracted longitudinalultrasonic technique|
    US6523418B2|1998-07-30|2003-02-25|Don E. Bray|Apparatus and method for ultrasonic stress measurement using the critically refracted longitudinalultrasonic technique|
    FR2866708B1|2004-02-23|2006-03-24|Commissariat Energie Atomique|METHOD AND DEVICE FOR OMBROSCOPY CONTROL|
    CA2678040A1|2007-02-15|2008-08-21|Dalhousie University|Vibration based damage detection system|
    US8805625B2|2009-10-14|2014-08-12|Siemens Corporation|Three-dimensional visualization and analysis method and system for non-destructive examination of a rotor bore using ultrasound|
    US8997573B2|2012-05-01|2015-04-07|Spirit Aerosystems, Inc.|Internal stringer inspection system for integrated structures|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19803003349|DE3003349A1|1980-01-31|1980-01-31|METHOD FOR DETECTING MATERIAL ERRORS IN HOLLOW BODIES|
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