Dynamic mechanical analysis

Dynamic mechanical analysis
AcronymDMA
ClassificationThermal analysis
Other techniques
RelatedIsothermal titration calorimetry
Dynamic mechanical analysis
Thermomechanical analysis
Thermogravimetric analysis
Differential thermal analysis
Dielectric thermal analysis

Dynamic mechanical analysis (abbreviated DMA) is a technique used to study and characterize materials. It is most useful for studying the viscoelastic behavior of polymers. A sinusoidal stress is applied and the strain in the material is measured, allowing one to determine the complex modulus. The temperature of the sample or the frequency of the stress are often varied, leading to variations in the complex modulus; this approach can be used to locate the glass transition temperature[1] of the material, as well as to identify transitions corresponding to other molecular motions.

  1. ^ "What is Dynamic Mechanical Analysis (DMA)?". 22 April 2018. Retrieved 2018-10-01.