- Direct analysis of viscoelastic properties of rubber materials up to 10kHz
- Extrapolation up to 1MHz with WLF calculation
VHF104 High Frequency DMA
Mechanical testing of materials at high frequencies
Most of conventional DMA are limited to a few 10Hz and make necessary to extrapolate the data through WLF calculation to obtain high frequency properties. VHF104 is an innovative Dynamic Mechanical Analyzer that applies a direct experimental method to measure the material viscoelastic properties over a very high frequency range from 100Hz up to 10kHz.
A typical frequency sweep with VHF104 requires only a few minutes, while the test with a conventional DMA requires applying a low frequency sweep over numerous temperature stages during several hours, making necessary further WLF calculation. VHF104 allows optimizing the laboratory’s productivity by fulfilling industrial requirements for the rapid analysis of large numbers of materials formulations.
| Frequency: | Min: 100 Hz Max: 10 kHz |
| Temperature Range: | Option 1: Min: Ambient Max 110 C Option 2: Min: -30C Max: Ambient |
| Strain Range: | 10E-6 up to 30%* Note: usable frequency range may depends on specimen geometry & material’s nature |
VHF104 applications
Data comparison with convential DMA
Tests performed with the VHF 104 reveal a very good cross checking with conventional DMA. Beside VHF 104 data are compared with data measured by a METRAVIB DMA+150; the DMA+ test has been performed over a frequency range from 5Hz up to 200Hz; the same frequency sweep has been applied over 20 temperature stages. Using the FTS function of DYNA+ software, the WLF principle has been applied to extrapolate the data to a larger frequency range (0.1 Hz up to 5 kHz). The resulting master curves are compared to direct measurements obtained with the VHF 104 in a much faster test: 5 minutes instead of a couple of hours.
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