FOAM 02: Impedance tube measurements of two porous materials with diameter variation

This dataset provides the data for Reference: [1] Alfonso Caiazzo, Florian Kraxberger, Christian Adams, Andreas Wurzinger, Jan Boysen, Giuseppe Petrone, Stefan Schoder, Sergio De Rosa, Manfred Kaltenbacher, and Christian Adams: FOAM 02: A dataset of impedance tube measurements with different materials and diameter variations. Acta Acustica 9 (50), 2025. https://doi.org/10.1051/aacus/2025033 This dataset consists of five .csv files: alphas.csv: absorption coefficients vs. frequencies (comma-separated), 864 rows according to 864 measurements targets.csv: one-hot encoded, i.e., binary, vectors of the parameter combinations), 864 rows according to 864 measurements. The Read_Me.pdf gives further information on the one-hot encoded vectors. diameter.csv: calliper diametric measurement in millimetres [mm]. This file contains 864 rows according to 864 measurements and 6 columns that, in order, represent: top diameter at 0°, top diameter at 90°, bottom diameter at 0°, bottom diameter at 90°, mean diameter, and standard deviation. JCAL_params_Pinta.csv: Identified Johnson–Champoux–Allard–Lafarge (JCAL) parameters for the material Pinta Plano Polar®. The file contains the following parameters expressed in SI units per each combination of the geometric factors under investigation: thickness (mm), diameter (mm), open porosity (–), static viscous permeability (m²), viscous characteristic length (m), thermal characteristic length (m), static airflow resistivity (N·s·m⁻⁴), tortuosity (–). JCAL_params_Basotect.csv: Identified Johnson–Champoux–Allard–Lafarge (JCAL) parameters for the material Basotect®. The file has the same structure aforementioned for JCAL_params_Pinta.csv. Note that the JCAL parameters included in the dataset are different to the original FOAM02 article [1], because of a parameter constraint on the tortuosity alpha_infty. The tortuosity parameter included in this dataset is constraint to be larger than one, which was not enforced in the original FOAM02 article [1]. The frequencies range from 150 Hz to 1600 Hz with resolution of 2 Hz. Note that these limits are not strictly equal to the frequency limits of the impedance tube, see ISO 10534-2. The data and code are licensed under Apache License, Version 2.0 https://opensource.org/licenses/Apache-2.0 Any reuse of the data must properly cite the dataset and its authors. Contact:Univ.-Prof. Dr. Christian AdamsGraz University of TechnologyInffeldgasse 16c8010 Graz, [e-mail]本数据集提供参考文献[1]对应的数据： [1] Alfonso Caiazzo、Florian Kraxberger、Christian Adams、Andreas Wurzinger、Jan Boysen、Giuseppe Petrone、Stefan Schoder、Sergio De Rosa、Manfred Kaltenbacher及Christian Adams：FOAM 02：包含不同材料与管径变化的阻抗管测量数据集。《Acta Acustica》9(50)，2025年。https://doi.org/10.1051/aacus/2025033 本数据集包含5个逗号分隔值（CSV）格式文件： 1. alphas.csv：吸声系数随频率的变化数据（逗号分隔格式），共864行，对应864组测量结果。 2. targets.csv：参数组合的独热编码（one-hot encoded）向量，即二进制向量，共864行，对应864组测量结果。Read_Me.pdf文件中提供了关于该独热编码向量的更多详细信息。 3. diameter.csv：以毫米（mm）为单位的游标卡尺直径测量数据。该文件包含864行（对应864组测量结果）与6列数据，依次为：0°位置顶部直径、90°位置顶部直径、0°位置底部直径、90°位置底部直径、平均直径以及标准差。 4. JCAL_params_Pinta.csv：材料Pinta Plano Polar®的Johnson-Champoux-Allard-Lafarge（JCAL）辨识参数。该文件以国际单位制（SI）给出了所有待研究几何因子组合下的如下参数：厚度（mm）、直径（mm）、开孔率（无量纲）、静态粘性渗透率（m²）、粘性特征长度（m）、热特征长度（m）、静态气流电阻率（N·s·m⁻⁴）、曲折度（无量纲）。 5. JCAL_params_Basotect.csv：材料Basotect®的Johnson-Champoux-Allard-Lafarge（JCAL）辨识参数。该文件的结构与前述JCAL_params_Pinta.csv完全一致。 请注意，本数据集包含的JCAL参数与原始FOAM02论文[1]中的参数存在差异，原因是本次对曲折度alpha_infty施加了参数约束：本数据集内的曲折度参数被限制为大于1，而原始FOAM02论文[1]未施加该约束。 本数据集的测量频率范围为150 Hz至1600 Hz，频率分辨率为2 Hz。需注意，该频率范围与ISO 10534-2标准中阻抗管的频率限制并非完全一致。 本数据集及代码采用Apache License, Version 2.0协议进行授权，详情见https://opensource.org/licenses/Apache-2.0。 任何对本数据集的再使用行为，均需正确标注本数据集及其作者的出处。 联系方式： 奥地利格拉茨工业大学，Univ.-Prof. Dr. Christian Adams Inffeldgasse 16c，8010 格拉茨 电子邮箱：[e-mail]