Impact force excitation generated by an ISO tapping machine on wooden floors

Lietzén, Jesse; Miettinen, Juha; Kylliäinen, Mikko; Pajunen, Sami

doi:10.1016/j.apacoust.2020.107821

Cited by 12 publications

(17 citation statements)

References 9 publications

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“…In the measurement situations, the cushion vinyl was glued to the surface of the wooden slabs around the centre hammer of the ISO tapping machine at each source position. This was done due to the simultaneous impact force excitation measurements presented in Lietzén et al 12 Otherwise, the cushion vinyl was installed loosely to the surface of the slab.…”

Section: Methodsmentioning

confidence: 99%

“…The input force with ( F with ) and without ( F without ) the soft floor covering were gained from the impact force excitation measurements. 12 In the measurements, 12 the centre hammer of the ISO tapping machine was instrumented to measure the impact force generated by the apparatus upon the floor surface. The impact force measurements 12 were simultaneous with the vibration measurements.…”

Section: Methodsmentioning

confidence: 99%

“…12 In the measurements, 12 the centre hammer of the ISO tapping machine was instrumented to measure the impact force generated by the apparatus upon the floor surface. The impact force measurements 12 were simultaneous with the vibration measurements. For further details of the impact force measurements, see Lietzén et al 12 The results for Δ L force were calculated from the measured 1/3-octave driving forces in the frequency range 50–5000 Hz.…”

Section: Methodsmentioning

confidence: 99%

“…The impact force measurements 12 were simultaneous with the vibration measurements. For further details of the impact force measurements, see Lietzén et al 12 The results for Δ L force were calculated from the measured 1/3-octave driving forces in the frequency range 50–5000 Hz.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, it is likely that the Δ L force provides only approximate results of Δ L a . It must also be noted that since the ISO tapping machine was equipped with one instrumented hammer in the impact force measurements, 12 the result of Δ L force hereby assumes that the impact force generated by all hammers are uniform at the same source position. This assumption is slightly rough because there are differences in the driving force spectra between the source positions.…”

Section: Methodsmentioning

confidence: 99%

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Vibration level reduction by floor coverings installed on wooden slabs

Lietzén

Kylliäinen

Valjakka³

et al. 2022

Building Acoustics

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Effect of floor coverings on impact sound insulation can be described with a vibration level reduction (Δ La). In this study, tests with two floor coverings, eight wooden slabs and with a concrete mock-up slab were conducted by applying the method presented by Sommerfeld and the standard ISO 16251-1. The aim was to study the differences affecting the measured Δ La and the behaviour of the floor coverings installed on different slabs. The results suggest that the Δ La on concrete slabs do not correspond with the Δ La on wooden slabs. Thus, the floor coverings should be measured on wooden slabs when they are to be used within the timber construction industry. The results also show that the coverings should be measured on the wooden slabs where the products are expected to be used. In addition, a standardized test method for the wooden slabs corresponding the method of ISO 16251-1 should be developed.

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Section: Methodsmentioning

confidence: 99%