DMA : dynamic mechanical analysis
The 6NAPSE Group carries out and supports manufacturers in dynamic mechanical analysis (DMA).
What is a DMA ?
DMA or dynamic mechanical analysis is a technique designed to measure the mechanical and viscoelastic properties of materials as a function of frequency and temperature, after applying deformation (bending, traction, etc.).
Most materials can be analyzed regardless of their type, physical state or the form in which they are used, namely: rubbers, thermosetting polymers, adhesives, etc. Indeed, the DMA measurement concerns different industries: acoustics, textile industries, transport, automotive, paper, food, etc.
This technique allows the knowledge of the modules (complex, storage, loss, shear), of the loss factor (damping) and their evolution in the frequency and temperature domains.
Dynamic Mechanical Analysis (DMA) of 6NAPSE Group
In order to meet the need for characterization of materials, particularly polymers, the 6NAPSE Group supports manufacturers in dynamic mechanical analysis.
Our equipment makes it possible to obtain the mechanical properties of the material. The plate or beam type samples have reduced dimensions of a few tens of millimeters. The 6NAPSE Group offers a great versatility of stress modes.
- Moduli: complex, storage, loss, shear
- Stress modes: traction, compression, shear on embedded sample and bending on “free-free” sample
Following the results of the DMA, it is possible to go further in the definition of material properties such as the Poisson’s ratio.
DMA advantages
From the measurement of the intrinsic properties, the moduli, the loss factor and the glass transition temperature, we can:
- Establish relationships between the structure, the morphology of polymers and the performance required for the end use.
- Determine the field of use in temperature, frequency and rate of deformation
- Predict the long-term behavior of materials.
Application cases
- Tests carried out on flax fiber specimens
- Tensile tests on heavy masses based on recycled elastomers
- Tensile tests on viscoelastic material (e.g. floor mats)
- Three-point bending tests on a steel blade
Technical characteristics
Or analysis laboratory is equipped with the METRAVIB RDS VISCOANALYZER VA2000 which uses frequency-temperature and/or time-temperature superposition calculation modules. In addition, the DYNATEST software ensures the control of the analysis, the acquisition of the measurements, the processing and the edition of the results.
Mechanical Parameters
- Young’s modulus (traction, compression or bending)
- Shear modulus
- Loss factor (damping)
- Thanks to the Young and shear modulus, we can determine the Poisson’s ratio
- Glass OR rubber transition (variation in temperature [-200; +200] °C and in frequency [0- 200] Hz)
Sample sizes
- Tensile: parallelepipedic shape sample [60x20x10mm] max / cylindrical shape sample [50x3mm] max
- Compression: parallelepipedic shape sample [60x40x40mm] max / cylindrical shape sample [60x40mm] max
- Bending: parallelepipedic shape sample [60×7.5×2.84 mm] max
- Shear: Cylindrical shaped sample [20×10mm] max
6NAPSE Group assets
- Complete validation plan (support for all tests of a standard)
- All the controls, tests and analyzes of our laboratories are carried out in compliance with the quality criteria of our industrial customers.
Contact us to discuss your needs quickly and technically!