This dataset contains research data used to prepare the publication:
Tomasz G. Zieliński, Kamil C. Opiela, Nicolas Dauchez, Thomas Boutin, Marie-Annick Galland, Keith Attenborough, "Extremely tortuous sound absorbers with labyrinthine channels in non-porous and microporous solid skeletons". Applied Acoustics, 217 (2024), 109816 (13 pages). DOI: 10.1016/j.apacoust.2023.109816
This research has been supported by the National Science Centre (NCN), Poland, under grant agreement 2021/41/B/ST8/04492.
All data are provided in columns in ASCII (.txt) files.
Files with names starting with the word "Calculations" give the results of numerical predictions of sound absorption for panels with single or double porosity. In the file names, this is marked as "SinglePorosity" and "DoublePorosity", respectively. These results were obtained using COMSOL Multiphysics and MATLAB environments.
Files with names starting with the word "Experiment" give the results of sound absorption measuremnts for 3D printed panel samples additively manufactured in the SLA or BJP technology. In the file names, this is marked as "SampleSLA" and "SampleBJP", respectively. These results were obtained using a Bruel&Kjaer impedance tube measurement kit.
"H16mm" in the file name means that the panel (sample) thickness is 16mm.
"H25mm" in the file name means that the panel (sample) thickness is 25mm.
"H32mm" in the file name means that the panel (sample) thickness is 32mm.
"T36" in the file name means that the material tortusoity is 36.
"T38" in the file name means that the material tortusoity is 38.
The first column in each file is labeled "Freq" and lists the frequencies. The following columns provide the values of the sound absorption coefficient calculated for single- or double-porosity panels or measured for 3D printed samples. The labels of these columns represent the air gap between the panel/sample and the rigid wall. The "0mm" label means that the material/sample was set directly on the rigid wall.
