Rieter ELWIS
The “Swiss Army Knife” of measurement systems
ELWIS (Evaluation of Light Weight Impedance System), the latest addition to the Rieter Measurement System portfolio, allows for the full and rapid characterization of porous materials.
Whereas the evaluation of different acoustic concepts usually requires a large database of material measurements, ELWIS only needs a single sample of a porous material from the manufacturing line, or from a vehicle component.
| The Rieter ELWIS system consists of the applications ELWIS-A and ELWIS-S which can be used separately, however, are both needed for a complete material simulation. Rieter ELWIS-A evaluates acoustic parameters that are needed to evaluate the acoustic performance of sound insulation and sound absorbing multi-layer treatment. Rieter ELWIS-S measures structural parameters (including the “Poisson Ratio” for foam materials) that are needed to simulate the dynamical and acoustical behaviour of real finite-size sound package parts in the medium to low frequency range. |
The Rieter ELWIS system is very easy to operate: thanks to its user-friendly software, users with only limited expertise on porous material characterization can use Rieter ELWIS and obtain correct results.
The unique benefits:
| • | The right tool for obtaining the material parameters used input data for component simulation using e.g. SISAB or SEA |
| • | the right choice to quickly compare the performances of different sound package solutions or materials |
| • | software can easily be operated also by non-experts |
| • | rapid, easy and reliable data evaluation, only needs a single sample of a porous material |
| • | supersedes large databases with material parameters to make the right decision regarding sound packages |
| • | can also be used as a quality control system |
| • | adaptable to a wide range of materials and parts |
| • | combines the benefits of inverse methods together with innovative post-processing and material knowledge |
Technical details:
| Overall dimensions: | 0.85 x 2.21 x 1.24 m [D x W x H] |
| Accommodated sample size: | ELWIS-A, 60 mm diameter, ELWIS-S, 100 mm diameter |
| Frequency range: | ELWIS-A – 200 to 3000 Hz |
| Standards: | fulfils the ASTM (E-1050) and ISO (10534-1/2) standards for impedance tube measurements (measurements between 200 and 3400 Hz)) |
New Rieter ELWIS software available
This new software has a fully automated analysis procedure. It makes data evaluation now even faster and easier. The possibility to generate a report allows the user to get an overview of all the material parameters as well as averages and standard deviations.
For further information on Rieter ELWIS please contact:
Tommy Falk
Head of Measurement Systems
Rieter Automotive Systems
T +41 52 208 84 53