Dynamic–Mechanical–Thermal Analysis (DMTA)


In the dynamic–mechanical–thermal analysis (DMTA), a sinusoidal load is applied to a specimen, whereby the deformation should be ideally in the linear-elastic region. During the test, the amplitude and the phase shift of the deformation are evaluated. From the results, the viscoelastic properties of a specimen can be described as a function of time. The following material parameters are evaluated: storage modulus E’, loss modulus E” and the mechanical attenuation and the loss factor tan δ as a function of temperature or frequency. Likewise, the glass-transition temperature Tg can be calculated. With the DMTA, changes in the molecular movement behaviour can be verified as a result of physical and chemical ageing.


Specimen Preparation

  • Specimen manufacturing
  • extraction of specimen from components or plates
  • sawing

Testing Conditions

  • Measuring in tension, bending, shearing, compression and torsion
  • Temperature range from -150 °C to 600 °C
  • Frequency range from 0.005 Hz to 100 Hz
  • Force range from 0.01 N to 500 N

Contact

Dr. Andre Wutzler
Telefon: +49 (0)3461 30889-57
andre.wutzler@psm-merseburg.de

Quickinfo

Results

  • Glass transision temperature Tg
  • Loss factor tan δ
  • Storage modulus E'
  • Loss modulus E''
  • Viscoelastic properties
  • Relaxation area
  • Ageing behaviour