LABINSIGHT: a glimpse inside the Acoustics and Vibrations Laboratory

(Pubbl. 08/09/2022)
Today we are going to introduce you to the Acoustics and Vibrations Laboratory with the help of the person in charge.

Hello everyone, my name is Andrea Cucchi and I am the technical manager of the Istituto Giordano Acoustics and Vibrations Department that was first established in 1980.
In 2011, following the opening of the new premises in Gatteo, the large amount of space available enabled us to design and construct a laboratory with state-of-the-art equipment and capacity.
The staff comprises qualified acoustic engineers who are active members of the main working parties of the UNI (Italian standards body) acoustics commission.

On the basis of which authorisations/notifications is testing performed?
We are registered on the list of notified laboratories for initial type testing for CE marking in accordance with Regulation (EU) No 305/2011 (CPR).
We are also ACCREDIA-accredited for laboratory measurements regarding sound absorption and airborne and impact sound insulation.
In addition, we carry out measurement and testing of construction materials, motorway barriers, machinery, etc. in accordance with the main national and international standards such as UNI, EN, ISO, DIN, NF, BSI, ASTM.

Let us go into more detail, which tests do you perform and on which products?
The test that we perform are designed to characterise the main parameters associated with structural and building acoustics, i.e.:
  • sound insulation
  • sound absorption
  • sound power

 Testing the sound insulation of a glazed partition and close-up of the omnidirectional sound source
Testing is carried out using state-of-the-art multichannel analysers that allow real-time acquisition of the sound field’s characteristic parameters.
The products most commonly tested are windows, doors, curtain walling, partitions, floors, panels, etc.

In addition to laboratory testing, we also perform field measurement of the sound insulation of buildings and building elements.
Furthermore, and once again on-site, we can measure and estimate vibrations in order to assess the possible disturbance to residents and potential damage to the building.

Tell us a bit more about the laboratory, how is it organised and how is testing performed?
The laboratory has a total of 11 test rooms or chambers. 10 of these are used in pairs in order to measure sound insulation (Fig. 2).
Among these, the sunken two-tier chamber is the only one in Italy for performing certain types of test and its design makes specimen movement smooth and safe, having a track along which it can slide horizontally (roof/floor, etc.). This also has an opening in the roof on the receiving room that allows rainfall noise to be tested using artificial raindrops.

More specifically, these 10 rooms are used to measure:
  • the impact sound reduction provided by floor coverings
  • the sound reduction index of vertical partitions, raised access floors and suspended ceilings
  • the sound reduction index and impact sound pressure of floors, as well as recording the noise produced by rainfall on roofs and skylights
The eleventh room is the reverberation chamber (Fig. 1) used for sound absorption and sound power testing of machinery and air-conditioning equipment.

Camera riverberante 
 Fig. 1                                                                                             Fig. 2      

For more details about the tests we can offer, please visit the dedicated page.