Measuring the Airflow Resistance of Porous Materials
The AFR (Airflow Resistance Measurement) system was designed to measure the airflow resistance of porous materials in an easy way without compromising in terms of measurement quality. The measurement results of the AFR system comply with ISO standard 9053:1991.
The AFR system offers:
- An extremely robust, stable, durable and high-quality construction
- Easy and intuitive operation also for non-experts
- Measurement of thin materials (fabrics or non-wovens) thanks to a special sample holder
- Rapid and easy fixation of measurement samples
- Easy transportation
|Overall dimensions:||0.6 x 0.6 x 1.24 m (L x W x H)|
|Sample diameter:||100 mm|
|Airflow Source:||Vacuum pump or compressed air|
|Standards:||ISO standard 9053:1991, method A (direct airflow method)|
A Global Standard for Acoustic Absorption Measurements
The Alpha Cabin has been especially designed for the measurement of acoustic absorption properties of materials and components used for the noise insulation of vehicles. The Alpha Cabin is significantly smaller than normal reverberation rooms and therefore ideally suited to use within limited space capacities. The acoustic absorption of the Alpha Cabin itself is also very low: Thanks to the high level of sound insulation, background noise in the frequency range of interest is kept to a minimum.
The Alpha Cabin offers:
- Development of enhanced sound packages and new materials and components for vehicles
- System recognized throughout the industry that is used by both vehicle manufacturers and suppliers
- Measurement results enable specifications for the absorption properties of NVH products (noise, vibration, harshness) to be drawn up
- Fast and easy measurement procedure thanks to user-friendly software
- Also ideal as a quality control system
- Easy transportation thanks to comparatively small size
- Can also be used in combination with Isokell to measure sound insulation
|Overall dimensions:||3.22 x 2.37 x 2.03 m (L x W x H)|
|Sample surface area:||1.2 m²|
|Frequency range:||400 – 10’000 Hz|
|Standards:||Based on ISO 354:2003|
Testing Acoustic Treatment: A Simple Test of Effectiveness
Apamat II was designed in order to compare and classify the complex range of soundproofing solutions currently used in the automotive industry. Apamat II tests the effectiveness of noise protection components and materials in terms of noise control, noise damping and noise insulation using just one system. Apamat II simulates
structure-borne and airborne excitation of the vehicle body-in-white under normal driving conditions. This realistic driving simulation enables valid and reliable measurement results to be obtained. Furthermore, the comprehensive suppression of secondary transmission paths in Apamat II facilitates a high dynamic range, making it particularly suitable for measurements of modern, high-performance noise control components.
Apamat II offers:
- Develop of new materials and concepts
- Measurement of acoustic efficiency by simulating material performance in the vehicle
- Measurement of noise control, noise damping and noise insulation using just a single system
- Combination of structure-borne and airborne excitation
- Quick and easy measurement
- Extremely robust, stable and durable system
|Overall dimensions:||1,740 x 1,180 x 1,865 mm (L x W x H)|
|Frequency range:||100 to 10,000 Hz|
|Accommodated sample size:||840 x 840 mm|
The innovative ARTIS3 system features an optimized experimental set-up for the performance assessment of structure-borne noise of acoustic packages. The dedicated software for testing, archiving and analysis makes it easy for the user to find the best solution in terms of performance, weight or cost.
Robust evaluation of the acoustic effectiveness of a passive treatment versus structure-borne noise
Immediate and easy measurement process
Easy to transport thanks to comparatively small size
|System dimensions:||920 x 920 x 1’490 mm (L x W x H)|
|Frequency range:||100 to 800 Hz|
|Sample size:||643 x 544 mm|
|Output:||Structure-borne insertion loss|
Easy and Non-Destructive Airflow Resistance Measurements of Materials and Parts
The control of airflow resistance in the production of materials and components is a growing requirement in the automotive industry. CARE+ (Concentric Airflow Resistance Evaluator) is an apparatus designed to measure the airflow resistance of materials and parts. Measuring non-destructively, CARE+ is particularly applicable in the quality control of parts and materials.
- Non-destructive air flow resistance measurements
- Ideal system for quality control
- Measurements of single or multi-layer materials or parts
- Easy transportation
|Overall dimensions:||440 x 180 x 305 mm (L x W x H)|
|Bell overall dimensions:||145 mm|
|Recommended range of airflow resistances:||200 to 4’000 Ns/m3|
|Recommended sample thickness:||less than 20 mm|
Carpet Cleanability Analyzer
Objective assessment of the Carpet Cleanability
The “Carpet Cleanability Analyzer” measurement system has been developed to analyze and compare the cleanability of different carpet surfaces. Per measuring cycle, three carpet samples soiled with strongly adhering particles, such as grains of sand or wool fibers, are cleaned by a robot-guided suction arm with controlled pressure. The measurement system calculates the cleanability and dirt resistance of the respective carpet technology based on the residue on the carpet surface and the weight difference of the samples.
Carpet Cleanability Analyzer offers:
- Robust, automated measuring method that works with all carpet surfaces (tufting and non-woven carpets)
- Only one operator necessary for the measuring process
- Repeatability of the results thanks to the robot-guided measuring process and the methodology used
- Representativeness – the methodology in use is similar to the way used by the car owners to clean their vehicle carpet.
- Quantitative assessment of the carpet cleanability
|System dimensions:||150 x 95 x 180 cm (L x W x H)|
|Number of samples:||3|
|Dimensions of standard sample:||180x620mm|
|Suction head speed:||7m/min|
The Leading Measurement System for the Analysis of Porous Materials
ELWIS (Evaluation of Light Weight Impedance System) offers a full and rapid characterization of porous materials based on the analysis of a single sample. The ELWIS system consists of the ELWIS-A and ELWIS-S components which can be used independently from each other although both applications are needed for a complete material simulation.
ELWIS-A measures acoustic parameters that are needed to evaluate the acoustic performance of sound insulation and sound-absorbing multi-layer materials. An additional impedance tube for absorption measurements at higher frequencies is available for ELWIS-A.
ELWIS-S measures structural parameters that are needed to simulate the dynamic and acoustic behavior of sound packages in the medium to low frequency range (including the “Poisson Ratio” for foam materials).
ELWIS is very easy to operate: Thanks to its user-friendly software, the system can also be used to obtain reliable results by users with only limited experience in the characterization of porous materials.
- Measurement system for obtaining material parameters for the simulation of components (e.g. using SISAB or SEA software)
- Swift comparison of performance of alternative systems or materials
- Rapid, easy and reliable data evaluation on the basis of a single material sample
- Supersedes large databases with material parameters for the compilation of sound packages
- Can also be used as a quality control system
- Adaptable to a wide range of materials and parts
- Combination of the benefits of inverse methods with innovative data evaluation and the latest material knowledge
- Easy-to-operate software also for non-experts
|Overall dimensions:||0.85 x 2.21 x 1.24 m (L x W x H)|
|Accommodated sample size:||ELWIS-A: 60 mm diameter
ELWIS-A additional option: 29 mm diameter
ELWIS-S: 100 mm diameter
|Frequency range:||ELWIS-A: 200 – 3,400 Hz
ELWIS-A additional option: 1000 – 6,300 Hz
|Standards:||Fulfills ASTM (E-1050) and ISO (10534-1/2)
For impedance tube measurements (measurements between 200 and 3,400 Hz or up to 6,300 Hz with the additional option)