Low-Frequency Acoustic Signals Propagation in Buried Pipelines; Journal of Physics: Conference Series; Vol. 671 : Innovations in Non-Destructive Testing (SibTest 2015)

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Parent link:Journal of Physics: Conference Series
Vol. 671 : Innovations in Non-Destructive Testing (SibTest 2015).— 2016.— [012031, 6 p.]
Tác giả chính: Ovchinnikov A. L.
Tác giả của công ty: Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Лаборатория № 62 (Акустико-эмиссионных методов неразрушающего контроля)
Tác giả khác: Lapshin B. M. Boris Mikhailovich
Tóm tắt:Title screen
The article deals with the issues concerning acoustic signals propagation in the large-diameter oil pipelines caused by mechanical action on the pipe body. Various mechanisms of signals attenuation are discussed. It is shown that the calculation of the attenuation caused only by internal energy loss, i.e, the presence of viscosity, thermal conductivity and liquid pipeline wall friction lead to low results. The results of experimental studies, carried out using the existing pipeline with a diameter of 1200 mm. are shown. It is experimentally proved that the main mechanism of signal attenuation is the energy emission into the environment. The numerical values of attenuation coefficients that are 0,14- 0.18 dB/m for the pipeline of 1200 mm in diameter, in the frequency range from 50 Hz to 500 Hz, are determined.
Режим доступа: по договору с организацией-держателем ресурса
Ngôn ngữ:Tiếng Anh
Được phát hành: 2016
Những chủ đề:
Truy cập trực tuyến:http://dx.doi.org/10.1088/1742-6596/671/1/012031
http://earchive.tpu.ru/handle/11683/33738
Định dạng: Điện tử Chương của sách
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647175

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