Webinar

Dynamic Mechanical Analysis

Thursday, December 5, 2024; 11:00AM–12:00PM EST
Online

Summary

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:

• Modulus
• Damping
• 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.

About Speaker

Jeffrey A. Jansen
Engineering Manager
The Madison Group

Jeffrey A. Jansen is the Engineering Manager and a Partner at The Madison Group, an independent plastics engineering and consulting firm. Jeff is a proven plastic professional with more than 30 years of experience solving problems and addressing opportunities related to polymeric materials. He specializes in failure analysis, material identification and selection, as well as compatibility, aging, and lifetime prediction studies for thermoplastic materials. Jeff has performed over 5,000 investigations, both for industrial clients and as a part of litigation. He 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.

Who Should Attend?

• Are you developing products for long-term applications and need to predict the material's behavior quickly? DMA could be the answer.
• Do you find yourself overwhelmed by the amount of testing equipment needed to characterize a plastic material and want to measure as many properties as possible with a single device? DMA is incredibly versatile!
• Are you interested in understanding both the short-term behavior (modulus, softening temperature, degree of cure) and the long-term behavior (creep, stress relaxation) of a material? DMA can provide insights into both aspects!

This educational program is provided as a service of SPE. The views and opinions expressed on this or any SPE educational program are those of the Speaker(s) and/or the persons appearing with the Speaker(s) and do not necessarily reflect the views and opinions of the Society of Plastics Engineers, Inc. (SPE) or its officials, employees or designees. To comment or to present an opposing or supporting opinion, please contact us at info@4SPE.org.

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