The airborne and impact sound insulation is to determine of capability of noise protection against airborne and impact noises performed by mobile testing equipment – omnidirectional speaker and tapping machine.
The tests are conducted according to our own procedure based on standards:
EN ISO 16283-1:2014/A1:2017 Acoustics - Field measurement of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation.
The determination of water vapour diffusion consists on determining the internal moisture content of the material under long-term normal operating conditions of the product and
The dynamic stiffness measurement is to determine of elasticity of material used as vibroisolation performed by information about resonant frequency of testes system.
The tests are carried out by Dynamic stiffness test bench in accordance with:
EN 29052-1:2011 Acoustics - Determination of dynamic stiffness - Part 1: Materials used under floating floors in dwellings.
As part of the testing of the PM&VL7 research line, Flex&Robust connections, injections and layers were examined.
The direction-averaged junction velocity level difference for connector or for connection model is to determine of ability to transfer vibrations through node with tested connector applied performed by measuring vibration velocity difference between node ends. Tested parameters: provides impulse force and measures acceleration of system response are determined according to our own procedure based on standards:
The airborne and impact sound insulation is to determine of capability of noise protection against airborne and impact noises performed by mobile testing equipment – omnidirectional speaker and tapping machine.
The tests are conducted according to our own procedure based on standards:
EN ISO 16283-1:2014/A1:2017 Acoustics - Field measurement of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation.
The critical damping ratio measurement is to determine of ability to dissipate the energy of free vibrations in the tested samples under specific load condition (initial sample load 80N, external force frequency seep with amplitude o 1N) performed by dynamic stiffness test bench.
The tests are carried out by Dynamic stiffness test bench according to modified procedure of
EN 29052-1:2011 Acoustics - Determination of dynamic stiffness - Part 1: Materials used under floating floors in dwellings
The critical damping ratio measurement is to determine of ability to dissipate the energy of free vibrations in the tested samples under specific load condition (initial sample load 80N, external force frequency seep with amplitude o 1N) performed by dynamic stiffness test bench.
The tests are carried out by Dynamic stiffness test bench according to modified procedure of
EN 29052-1:2011 Acoustics - Determination of dynamic stiffness - Part 1: Materials used under floating floors in dwellings
The test method is based on determining the absorption of infrared radiation by presenting the result as a spectrum. In Fourier spectrometers, the spectra are obtained by examining the absorption for the radiation beam from the entire tested IR range. After this beam has passed through the sample, the beam from the same source has not been interfered with, and the spectrum is obtained using the Fourier transform of the recorded interference spectrum. Thus, we obtain the absorption (or transmission) signal as a function of wavelength (wavenumber expressed in cm-1).
The test method is based on determining the absorption of infrared radiation by presenting the result as a spectrum. In Fourier spectrometers, the spectra are obtained by examining the absorption for the radiation beam from the entire tested IR range. After this beam has passed through the sample, the beam from the same source has not been interfered with, and the spectrum is obtained using the Fourier transform of the recorded interference spectrum. Thus, we obtain the absorption (or transmission) signal as a function of wavelength (wavenumber expressed in cm-1).
The optical (digital) microscope (OM) observation is to determine the microstructure of the material. There are no standards in microscopic observations. The aim of the observation is to compare the microstructure of the observed material with the progress of the ageing process using different magnifications.
Tests are performed on samples in the solid state with dimensions of 40mm x 40mm x 3mm. In OM there are no dimensional restrictions. Optical (digital) microscope - Keyence VHX-7000 is used for the tests.