Dispersion and attenuation by transmission, reflection, and mode conversion in welded pipes

Autor:	M Michael Golombok, Bbsa Vogelaar
Přispěvatelé:	Power & Flow, Energy Technology, Group Deen
Rok vydání:	2016
Předmět:	010302 applied physics Absorption (acoustics) Materials science Acoustics and Ultrasonics Scattering business.industry Attenuation Transmission loss 01 natural sciences Optics 0103 physical sciences Dispersion (optics) Node (physics) Reflection (physics) Phase velocity business 010301 acoustics
Zdroj:	Applied Acoustics, 110, 1-8. Elsevier
ISSN:	0003-682X
DOI:	10.1016/j.apacoust.2016.03.007
Popis:	Torsional wave dispersion and attenuation in an open empty welded pipe are determined from a multi-receiver position reflection experiment. The fundamental torsional wave is dominantly reflected at the free end and the converted non-axisymmetric flexural modes are naturally attenuated. The resulting phase velocity contours are in agreement with theoretical predictions. The transmission losses are quantified and compared to those reflective elements associated with end and weld reflection. At any reflective node, the incident wave is split between back and forward preserved mode scattering (“reflection/transmission”), conversion to other modes plus energy lost by absorption. The ratios for each element are quantified.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71ef51d46302611ac433be54488128e4 https://doi.org/10.1016/j.apacoust.2016.03.007 Zobrazit plný text záznamu Full Text from ScienceDirect