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Thermomechanical analysis (TMA) probes the response of the sample’s thermal, dynamic, and static-mechanical properties as temperature is changed over time.
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- Data quality is hindered for rough, asymmetric, or otherwise irregularly shaped samples
- Destructive analysis
TMA measurement of dimensional change (shrinkage and expansion) of oriented polyethylene film acquired in tensile mode.
TMA measurement of multilayer film thickness by a penetration test. Layer thickness is annotated on the plot
- Solid phase
- Maximum dimensions: 26 mm (L) x 4.7 mm (W) x 1.0 mm (T)
TA Instruments Q400EM
- Temperature Range: -150 to 1000 °C
- Displacement Resolution: < 0.5 nm
- Force Range: 0.001 to 2 N
During a TMA measurement, a probe is set at rest on the surface of a sample, with no applied force. Then, heat is applied, causing temperature to rise, and inducing material property changes that deform the specimen.
Hyper-fine measurements are taken of the probe’s vertical displacement, illuminating the sample’s morphological and mechanical response to temperature flux.
During heating, one can also apply a controlled force across the probe (either dynamic/variable or unchanging/static), enabling different measurement modes that assess a wide assortment of mechanical properties as a function of temperature.
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