Conference_programme: 17: Building acoustics
Lecture: Comparison measurements at the Physikalisch-Technische Bundesanstalt in the year 2016
Author(s): Stange-Kölling Sylvia , Wittstock Volker
Summary:
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.\nThat 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.\nThe results of the individual measurements will be presented and consequences for the hammer excitation of the walls will be discussed.\n
Corresponding author
Name: Ms Sylvia Stange-Kölling
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: Germany
