Dynamic mechanical analysis (DMA) is a technique used to study mechanical properties of objects, typically viscoelastic properties of polymer materials. Traditionally, this involves understanding the viscous and elastic mechanical properties of a polymeric material under a constant deflection. In this case, DMA is a powerful tool for monitoring the strain of a material when a dynamic sinusoidal stress is applied and allows the understanding of complex time dependent moduli.
Many time-, frequency- and temperature-dependent properties of polymers can be elucidated from DMA experimentation. The storage modulus (E’ or G’) of a material can be measured, along with the loss factor and angle. By modulating the temperature with respect to a constant stress, the glass transition temperature can also be measured. Fatigue experimentation can be used to track the changes within a polymer material as it is cyclically loaded and may shed insight into its long-term behaviour.
|Excitation Frequencies||1 – 1000 Hz|
|Maximum Dynamic Force||150N peak to peak|
|Maximum Dynamic displacement||12 mm peak to peak|
|Temperature Range||Ambient – 450 °C|
|Modulus Range||250 – 3.1×1012 Pa|
|Measurement Range||> 7 decades|
DMA sample holders unlock additional test methods. The following test configurations are available:
Our DMA unit is compliant with many international standard test methods. For a list of our standard test method offerings, check out our ASTM, ISO, and EN Standard Test Services page.
Other methods may be available. Contact us at email@example.com or call (506) 457-0498 to discuss.
I had a request for thermal conductivity information on one of my adhesives and contacted Thermal Analysis Labs. The process was very smooth – I experienced none of the issues typical of other contract labs we work with. The results were delivered on time and I have used the data in our sales literature to help my clients have success in their applications.
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I was well pleased with the experience. The instructions for the sample configuration was clear. The people responded promptly to questions. The lab double checked results to address any questions. The report was clear, easily understood.
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I am very happy with the testing services I received from Thermal Analysis Labs. I’ve found them very responsive, and they were able to get us the data we needed to get quickly so that we could use it to validate our designs. I refer my other colleagues to them, and they’re my go-to group for thermal testing.
Scott Kramer, PEng.,
Principal R&D Engineer
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