3D sound radiation reconstruction from camera measurements

Baldini, Sofia (avtor), Guernieri, Gianluca (avtor), Gorjup, Domen (avtor), Gardonio, Paolo (avtor), Slavič, Janko (avtor), Rinaldo, Roberto (avtor)

In general, the measurement of the sound radiation field by machinery and partitions requires time-consuming tests, which should be carried out in specially dedicated anechoic/reverberant facilities with calibrated sensors and complex acquisition and post processing equipment. This article introduces a two-step method for the identification from optical measurements of the free- field sound radiation generated by flexural vibrations of closed shells. In the first step, the flexural vibration of the shell is reconstructed with a frequency domain triangulation technique based on short multi-view video acquisitions made with a single high-resolution, high-speed camera. In the second step, the free-field sound radiation is derived from a discretized boundary integral formulation. The study is focused on the identification of the sound radiation from the flexural vibration of a baffled cylinder model structure. The vibration and sound fields reconstructed from the camera measurements are validated against direct measurements taken with a laser scanner vibrometer and a microphone array, respectively. Overall, this research demonstrates that optical methods based on camera measurements can be suitably employed to produce fast and accurate full-field measurements of sound radiation of closed shells (without the need for a dedicated measurement environment, e.g. reverberant, anechoic chambers).

• Jezik: Angleški jezik
• Ključne besede: videogrammetry, flexural vibration measurement, sound radiation reconstruction, frequency-domain triangulation
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 20 str.
• Številčenje: Vol. 227, art. 112400
• PID: 20.500.12556/RUL-167086
• UDK: 534.83
• ISSN pri članku: 1096-1216
• DOI: 10.1016/j.ymssp.2025.112400
• COBISS.SI-ID: 225020931

Avtorske pravice

Podatek o licenci je pridobjen s strani avtorja in objavljen na založnikovi spletni strani.

• Datum objave v RUL: 07.02.2025

Gradivo je del revije

• Naslov: Mechanical systems and signal processing
• Skrajšan naslov: Mech. syst. signal process.
• Založnik: Elsevier
• ISSN: 1096-1216
• COBISS.SI-ID: 15296283

Licence

• Licenca: CC BY-ND 4.0, Creative Commons Priznanje avtorstva-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nd/4.0/deed.sl
• Opis: Licenca Creative Commons Brez predelav dovoljuje uporabnikom ponovno distribucijo dela, vendar ne v spremenjeni obliki. Zahtevana je navedba avtorstva.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: videogrametrija, merjenje vibracij, zvočno sevanje, triangulacija v frekvenčni domeni