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Northwest Missouri State University

Dynamic Mechanical Analyzer (Photo by University Photography)

Dynamic Mechanical Analyzer (DMA)

DMA is a technique where a small deformation is applied to a sample in a cyclic manner. DMA is widely used to characterize materials’ bulk properties such as modulus, compliance, and damping (tan delta). It measures changes of rheological behavior under dynamic conditions as a function of temperature, time, frequency, stress, atmosphere or a combination of these parameters. General applications include characterization of polymeric substances, powdered drugs, amorphous material in samples, gels, natural products like tea, coffee, herbs etc.