Acoustic impedance measurements with a sound intensity meter |
| |
| Institution: | 1. Department of Mechanical Engineering, Middle East Technical University, Ankara, Turkey;2. Institue for Simulation of Reactive Thermo-Fluid Systems, TU Darmstadt, Darmstadt 64287, Germany;3. Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;1. School of Environment and Science/Cities Research Institute, Griffith University, Brisbane, Australia;2. Waves Research Group, Department of Information Technology, Ghent University, Belgium;1. Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China;2. Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China;1. Department of General Internal Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan;2. Kyushu General Medicine Center, Haradoi Hospital, 6-40-8 Aoba, Higashi-ku, Fukuoka, 813-8588, Japan |
| |
| Abstract: | Acoustic impedance measurements have been made by evaluating, with a sound intensity meter, sound pressure and normal velocity close to absorbing material samples.Measurements have been made both in a Kundt interferometer and in the free field. With the Kundt interferometer the same results are achieved as with the classical Kundt interferometer but the present method is much faster and easier to implement.Free field measurements are accurate for frequencies high enough to allow one to neglect the finite dimension effect of the absorbing material sample. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
