WEBINAR: Viscoelasticity: The Implications for Plastics

November 10, 2022 at 11:00am-Noon EST
Webinar via Zoom

FREE for SPE Members
Non-Members: $199

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Plastics are viscoelastic materials, meaning that they exhibit both viscous and elastic characteristics when undergoing deformation. This is due to their unique molecular structure. The polymer molecules consist of long chains with high molecular weight. Those individual polymer chains are and tangled into each other, but are mobile and can slide past each other because they do not share chemical bonds with the other chains.

Because of their viscoelastic nature, the mechanical properties of plastics vary depending on the conditions under which stress is applied. Most commonly, the mechanical properties of plastics will vary with temperature, time under load, and strain rate.

Their viscoelastic nature is important to those designing, manufacturing, or using plastic components. and is a fundamental concept of plastic behavior that needs to be understood. It is important to recognize the viscoelastic nature of plastic materials so that their behavior in the intended application can be understood.

This webinar will expose the attendees to the following concepts:

  • The viscoelastic nature of plastics is attributed to their molecular structure.
  • Thermoplastic materials have both long-term and short-term properties – they flow due to the application of stress over time.
  • Most mechanical testing of plastic materials is actually testing the material’s viscoelasticity – how the plastic flows when different stresses are applied.
  • Plastics are time, temperature, and strain rate sensitive.

About Speaker

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. Jeff 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. 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.

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