Experimental Research of Vibration Transmission in Wooden Junctions with a View Towards Statistics

The measurements of sound propagation in lightweight buildings often show a variation between nominally identical constructed structures. These variations can be due to variations in structural properties, measurement uncertainties or workmanship related factors. Better knowledge about the sources for these variations can lead to lowered production costs. Ongoing research is concerned with the transmission of vibration through wooden junctions found in lightweight building structures. In the literature numerous results of different experiments performed on simple junctions can be found. However, these results are often based on series of measurements performed on a single test subject only, which in the case of wooden structures may not provide results representable for similar junctions in general. The present paper discusses considerations of designing a series of repeated vibration measurements on wooden plate/beam T-junctions.