SU603896A1 - Method of testing acoustic contact - Google Patents
Method of testing acoustic contactInfo
- Publication number
- SU603896A1 SU603896A1 SU772447469A SU2447469A SU603896A1 SU 603896 A1 SU603896 A1 SU 603896A1 SU 772447469 A SU772447469 A SU 772447469A SU 2447469 A SU2447469 A SU 2447469A SU 603896 A1 SU603896 A1 SU 603896A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- piezoelectric element
- acoustic contact
- ultrasonic
- product
- side lobes
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
(54) СПОСОБ КОНТРОЛЯ АКУСТИЧЕСКОГО КОНТАКТА(54) METHOD OF CONTROL OF ACOUSTIC CONTACT
Изобретение относитс к неразрушающему контролю материалов и может быть использовано дл ультразвукового контрол труб, сварных соединений труб, заготовок в цеховых и лабораторных услови х.The invention relates to non-destructive testing of materials and can be used for ultrasonic testing of pipes, welded joints of pipes, blanks in workshop and laboratory conditions.
Известен способ непосредственного контрол состо ни акустического контакта измерением амплитуды поперечной волиы, отраженной от поверхности контролируемого издели 1.There is a method of direct control of the state of an acoustic contact by measuring the amplitude of the transverse will reflected from the surface of the test article 1.
Недостатками этого способа вл ютс неоднозначность определени места нарушени акустического контакта из-за наличи двух контактных поверхностей, а также возможность реализации этого способа лишь при наличии двух искателей.The disadvantages of this method are the ambiguity of determining the location of the disturbance of acoustic contact due to the presence of two contact surfaces, as well as the possibility of implementing this method only if there are two searchers.
Известен также способ контрол акустического контакта, заключающийс в том, что с помощью наклонного искател возбуждают ультразвуковые колебани в контролируемом изделии и принимают эхо-сигналы от него, в частности сигнал донного отражени продольной волиы, излучаемой специальным пьезоэлементом в призму искател и вводимой в металл в том же месте, где вводитс основна поперечна УЗ волна 2.There is also known a method of controlling acoustic contact, which involves using an inclined finder to excite ultrasonic vibrations in a controlled product and receive echo signals from it, in particular the signal of the bottom reflection of the longitudinal will emitted by a special piezo element into the prism of the searcher and introduced into the metal same place where the main transverse ultrasonic wave 2 is introduced.
Так как качество акустического контакта оцениваетс в этом способе по отражению продольной волны вспомогательного пьезоэлемента , способ не позвол ет оценить и скорректировать изменение сигнала поперечной УЗ волны основного пьезоэлемента, чем снижаетс достоверность контрол . На результаты контрол сказываетс и качество обработки контролируемых изделий.Since the quality of the acoustic contact is estimated in this method by the reflection of the longitudinal wave of the auxiliary piezoelectric element, the method does not allow to evaluate and correct the change in the transverse ultrasonic signal of the main piezoelectric element, thus reducing the reliability of the control. The results of the control are also affected by the quality of processing of the controlled products.
Дл повышени достоверности контрол принимают ультразвуковые колебани , соответствующие боковым лепесткам диаграммы направленности искател , а по их амплитуде суд т о качестве акустического контакта.In order to increase the reliability of monitoring, ultrasonic vibrations corresponding to the side lobes of the searcher's radiation pattern are taken, and according to their amplitude they judge the quality of acoustic contact.
На чертеже изображено устройство, реализующее предложенный способ.The drawing shows a device that implements the proposed method.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772447469A SU603896A1 (en) | 1977-01-28 | 1977-01-28 | Method of testing acoustic contact |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772447469A SU603896A1 (en) | 1977-01-28 | 1977-01-28 | Method of testing acoustic contact |
Publications (1)
Publication Number | Publication Date |
---|---|
SU603896A1 true SU603896A1 (en) | 1978-04-25 |
Family
ID=20693587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772447469A SU603896A1 (en) | 1977-01-28 | 1977-01-28 | Method of testing acoustic contact |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU603896A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4222419A1 (en) * | 1992-07-08 | 1994-01-13 | Siemens Ag | Ultrasonic transducer arrangement for ultrasonic testing of tandem errors |
-
1977
- 1977-01-28 SU SU772447469A patent/SU603896A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4222419A1 (en) * | 1992-07-08 | 1994-01-13 | Siemens Ag | Ultrasonic transducer arrangement for ultrasonic testing of tandem errors |
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