Thermo mechanical analysis (TMA)

Description Thermo mechanical analysis (TMA) easily and rapidly measures sample displacement (growth, shrinkage, movement, etc.) as a function of temperature, time, and applied force.

Traditionally, TMA is used to characterize linear expansion, glass transitions, and softening points of materials by applying a constant force to a specimen while varying temperature.
For expansion measurements, a probe rests on a sample on a stage with minimal downward pressure. Other constant force experiments include measurement of penetration, bending, tension, shrinkage, swelling, and creep (sample motion measured as a function of time under an applied load).

In Dynamic TMA (DTMA), a known sinusoidal stress and linear temperature ramp are applied to the sample, and the resulting sinusoidal strain is measured.

Linseis offers two TMA Instruments:

 

 

 

 

Typical Applications 

  • Tension studies of the stress/strain properties of films and fibers
  • Determination of softening behavior
  • Glass transition temperatures and secondary transitions
  • Phase change determination
  • Determination of mechanical behavior under applied force
  • Determination of expansion coefficient (dilatometry)
  • Sintering behavior
  • Volumetric expansion
  • E modulus
  • Slipping and friction resistance
     

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