Nayak, A.S.Prieto, A.Fernández-Comesaña, Daniel2025-05-222025-05-222024-10D. Fernandez Comesana, A. S. Nayak, y A. Prieto Aneiros, «Acoustic characterization of porous windscreens for sound pressure and particle velocity sensors». Proceedings of the 53rd International Congress and Exposition on Noise Control Engineering, vol. 270, n.o 4, pp. 7736-7746, oct. 2024, doi: 10.3397/IN_2024_40020736-29352993-2548http://hdl.handle.net/2183/42060O congreso tivo lugar en Nantes, Francia, os días 25-29 de agosto, 2024[Abstract]: Acoustic measurements of ground vehicles, wind turbines or aircrafts are often performed outdoors in presence of wind. Air movement around an acoustic sensor can significantly impact measurements due to flow-induced vibrations and turbulence. This is specially relevant for pressure-gradient and particle-velocity based acoustic transducers which are more sensitive to these perturbations. To attenuate this effect and improve measurement quality, the sensors are typically coveredwith windscreens made of porous materials. However, designing an appropriate windscreen poses a challenging task, demanding a deep understanding of sound transmission characteristics. This study works towards quantifying acoustic properties of rigid-frame porous materials through in-situ measurements and fitting a parametric fluid-equivalent model to find optimal model parameters. The parameters are subsequently investigated by comparing windscreen insertion loss through finite-element numerical simulations and measurements on a sound intensity PU probeengPermission is granted for the reproduction of a fractional part of this paper published in the Proceedings of INTER-NOISE 2024 provided permission is obtained from the author(s) and credit is given to the author(s) and these proceedingsPorous windscreensAcoustic characterizationOutdoor noise measurementFluid-equivalent modelconference outputopen access