| Zugriffsnummer | 40329 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Comparison measurements at the Physikalisch-Technische Bundesanstalt in the year 2016 |
| Autor(in); Institution |
Stange-Kölling, Sylvia; 1.7, Akustik und Dynamik, PTB-Braunschweig
Wittstock, Volker; 1.7, Akustik und Dynamik, PTB-Braunschweig
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| Quelle/Jahr | Euronoise 2018, 11th European Congress and Exposition on Noise Control Engineering:(2018), 1691 - 1694 |
| Availability | [online only] |
| ISSN | 2226-5147 |
| URL | |
| Verlag | Heraklion: EAA-HELINA |
| Konferenzangaben | Euronoise 2018, 11th European Congress and Exposition on Noise Control Engineering, Heraklion, Crete, 27-31, May, 2018, Greece |
| Klassifikationscode | PACS: 43.58.+z |
| Freie Schlagworte | building acoustics ; loss factor measurement ; non-linearities |
| Zusammenfassung | In 2016, it was PTB's turn to host the comparison measurements of the approved test centers for building acoustics in Germany. For these test centers, regular participation in comparison measurements is mandatory; however, other test centers are free to attend. Over the years, these comparison measurements have proven to be an important building block of quality assurance. The measurements encompass three partial measurements as well as the testing of loudspeakers and tapping machines. The measurement results of the test centers are compared with a reference value from PTB. That year, the partial tasks were to measure the airborne sound insulation of a thick lime sand brick wall and the impact noise level of a stair element. As an additional task, the loss factor of the lime sand brick wall was determined. During the loss factor determination, a significant dependence of the results on the type of excitation (shaker or hammer) became visible. By applying very high airborne sound excitation, it could be shown that non-linearities cause the discrepancies. The results of the individual measurements will be presented and consequences for the hammer excitation of the walls will be discussed. |
| Themenbereich der Metrologie | Akustik, Ultraschall, Beschleunigung |