Research data for: Taking advantage of a 3D printing imperfection in the development of sound-absorbing materials

This dataset contains research data used to prepare the publication:Tomasz G. Zieliński, Nicolas Dauchez, Thomas Boutin, Mikel Leturia, Alexandre Wilkinson, Fabien Chevillotte, François-Xavier Bécot, Rodolfo Venegas, "Taking advantage of a 3D printing imperfection in the development of sound-absorbing materials". Applied Acoustics, 197 (2022), 108941 (22 pages). DOI: 10.1016/j.apacoust.2022.108941This 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 materials with single or double porosity.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 samples.These results were obtained using a Bruel&Kjaer impedance tube measurement kit."H36mm" in the file name means that the material thickness or sample height is 36mm."H48mm" in the file name means that the material thickness or sample height is 48mm.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 materials or measured for 3D printed samples. The labels of these columns represent the air gap between the material/sample and the rigid wall. The "0mm" label means that the material/sample was set directly on the rigid wall.