Matches in Ghent University Academic Bibliography for { <https://biblio.ugent.be/publication/01HS0QSTGFCGXQYJGJCYY9HN9D> ?p ?o. }
Showing items 1 to 18 of
18
with 100 items per page.
- 01HS0QSTGFCGXQYJGJCYY9HN9D classification C3.
- 01HS0QSTGFCGXQYJGJCYY9HN9D date "2023".
- 01HS0QSTGFCGXQYJGJCYY9HN9D language "eng".
- 01HS0QSTGFCGXQYJGJCYY9HN9D type conference.
- 01HS0QSTGFCGXQYJGJCYY9HN9D hasPart 01HS0QVKTX6JVS41RMGA4SXPD2.pdf.
- 01HS0QSTGFCGXQYJGJCYY9HN9D subject "Physics and Astronomy".
- 01HS0QSTGFCGXQYJGJCYY9HN9D subject "Technology and Engineering".
- 01HS0QSTGFCGXQYJGJCYY9HN9D presentedAt urn:uuid:9327326b-2cfb-4861-b6a2-ef2a6a58b8a9.
- 01HS0QSTGFCGXQYJGJCYY9HN9D abstract "Phononic crystals are a category of acoustic metamaterials with lat-tice structure which manipulate elastic wave propagation in an ex-traordinary way. A prominent characteristic of phononic crystals is suppression of wave propagation over particular frequency ranges, so called phononic bandgaps. In this study, a phononic crystal plate with optimized cellular design is manufactured by water jetting an aluminum plate and its inter- and intra-cellular wave dynamics are analyzed by 3D scanning laser Dop-pler vibrometry. The optimized design of the phononic plate includes a complete bandgap of both symmetric and antisymmetric guided wave modes with dominant in-plane and out-of-plane particle displacement, respectively. Broadband sine sweep excitation is applied by a surface-mounted piezoelectric transducer, and transmission characteristics of guided waves throughout the phononic plate is studied. Both in-plane and out-of-plane operational deflection shapes of the plate are measured and compared with the mode shapes calculated by finite element simulation. The results confirm the strong attenuation of both symmetric and antisymmetric guided wave modes inside the phononic bandgap, as well as the resonation of modes in the vicinity of the bandgap edges. Furthermore, the 3D vibrometry measurements reveal that despite the absence of in-plane wave energy in the excita-tion area, the symmetric wave modes are effectively excited. After de-tailed inspection of the phononic plate, this observation is explained by asymmetry of the water jetted cutting edges which lead to the coupling of symmetric modes with co-existing antisymmetric modes. The results demonstrate the performance of 3D scanning laser Doppler vibrometry for inspection of phononic crystals (and in general acoustic metamaterials) with complex cellular design in gaining full in-sight about their inter- and intra-cellular wave dynamics, and in reveal-ing any deviations induced by manufacturing imperfections.".
- 01HS0QSTGFCGXQYJGJCYY9HN9D author 199EDBAE-F0EE-11E1-A9DE-61C894A0A6B4.
- 01HS0QSTGFCGXQYJGJCYY9HN9D author 1EF7934A-6D3F-11E5-9F78-C3E0B4D1D7B1.
- 01HS0QSTGFCGXQYJGJCYY9HN9D dateCreated "2024-03-15T09:41:29Z".
- 01HS0QSTGFCGXQYJGJCYY9HN9D dateModified "2024-11-28T00:13:59Z".
- 01HS0QSTGFCGXQYJGJCYY9HN9D name "3D infrared scanning laser Doppler vibrometry for measuring wave dynamics in acoustic metamaterials".
- 01HS0QSTGFCGXQYJGJCYY9HN9D pagination urn:uuid:9e511d93-99e9-4654-b289-34575da63576.
- 01HS0QSTGFCGXQYJGJCYY9HN9D sameAs LU-01HS0QSTGFCGXQYJGJCYY9HN9D.
- 01HS0QSTGFCGXQYJGJCYY9HN9D sourceOrganization urn:uuid:38d31a68-038a-411a-bfb0-d583aeebe246.
- 01HS0QSTGFCGXQYJGJCYY9HN9D type C3.