WEBINAR: An Introduction to Dynamic Mechanical Analysis
June 13, 2019 at 11:00AM–NOON EDT
Webinar via Zoom
Dynamic Mechanical Analysis (DMA) is a thermoanalytical technique that measures the stiffness (modulus) and damping (tan delta) of polymeric materials to assess the viscoelastic properties as a function of time, temperature, and frequency. Polymeric materials display both elastic and viscous behavior simultaneously, and DMA can separate these responses. Polymers, composed of long molecular chains, have unique viscoelastic properties, which combine the characteristics of elastic solids and Newtonian fluids.
As part of the DMA evaluation, a small deformation is applied to a sample in a cyclic manner. This allows the material’s response to stress, temperature, and frequency to be studied. The analysis can be in several modes, including tension, shear, compression, torsion, and flexure. DMA is a very powerful tool for the analysis of plastics and can provide information regarding:
- Glass Transition
- Softening Temperature
- Creep Behavior
- Stress Relaxation
- Degree of Cure
This webinar will provide an introductory look into DMA and how it can be applied to better understand plastic behavior, both long-term and short-term.
Jeffrey A. Jansen is Senior Managing Engineer and a Partner at The Madison Group, an independent plastics engineering and consulting firm. Jeff specializes in failure analysis, material identification and selection, as well as compatibility, aging, and lifetime prediction studies for thermoplastic materials. He has been solving polymer-related problems for 26 years. In that time, he has performed over 3,820 investigations, both for industrial clients and as a part of litigation. Jeff is a regular presenter on the SPE webinar series, covering a wide range of topics related to plastics failure, material performance, testing, and polymer technology. Jeff is a graduate of Carroll College and the Milwaukee School of Engineering.