Editing Dynamic mechanical analysis (section)

{{Short description|Technique used to study & characterize materials}}
{{Infobox chemical analysis
| name = Dynamic mechanical analysis
| acronym = DMA
| classification =[[Thermal analysis]]
| analytes =
| related = [[Isothermal titration calorimetry]]<br>Dynamic mechanical analysis<br>[[Thermomechanical analysis]]<br>[[Thermogravimetric analysis]]<br>[[Differential thermal analysis]]<br>[[Dielectric thermal analysis]]
| hyphenated =
}}
'''Dynamic mechanical analysis''' (abbreviated '''DMA''') is a technique used to study and characterize materials. It is most useful for studying the [[viscoelastic]] behavior of [[polymer|polymers]]. A sinusoidal stress is applied and the strain in the material is measured, allowing one to determine the [[Dynamic modulus|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<ref>{{cite web |url=https://coventivecomposites.com/explainers/dynamic-mechanical-analysis-dma/|accessdate=2018-10-01|title=What is Dynamic Mechanical Analysis (DMA)?|date=22 April 2018 }}</ref> of the material, as well as to identify transitions corresponding to other molecular motions.