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 manufacturing
- extraction of specimen from components or plates
- 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
Dr. Andre Wutzler
Telefon: +49 (0)3461 30889-57
- Glass transision temperature Tg
- Loss factor tan δ
- Storage modulus E'
- Loss modulus E''
- Viscoelastic properties
- Relaxation area
- Ageing behaviour