Why this test matters
Materials expand, soften, or shrink when temperature changes, and these effects can cause warping, loss of tolerance, or failure in assemblies. Thermomechanical Analysis shows exactly how a material responds to heat under a controlled load or constraint, so you know how it will actually behave in service, not just in theory. It's especially important for polymers, composites, coatings, ceramics, and glass used in applications where thermal stability and dimensional accuracy are critical, from everyday plastics all the way to high-performance ceramics that need to hold their shape at extreme temperatures.
How the test works
The sample is placed in the TMA, where a probe applies a small, controlled force while the temperature is increased or decreased according to a defined program, from as low as 20°C up to 1600°C. The instrument continuously records the sample's displacement as a function of temperature or time, whether that's expansion, penetration, or softening, giving you a precise picture of dimensional change across the full thermal range your material will actually experience.
What you learn from this test
The test provides data such as coefficient of thermal expansion, softening and transition temperatures, and dimensional stability limits. It also reveals phenomena like crystallisation, solid-solid transitions, viscoelastic and creep behaviour, delamination in composites, shrinkage of films, gel formation, swelling of elastomers, curing of resins, and sintering behaviour in high-performance ceramics. Results help you compare materials, predict fit and performance in assemblies, and optimize processing conditions, supporting confident decisions on reliability, precision, and long-term performance.
