Pressure, Rate, and Temperature Effects on Mechanical Properties in Polymethylmethacrylate (PMMA)

Add to your list(s) Download to your calendar using vCal

• Jennifer Jordan, Editor-in-Chief, Journal of Dynamic Behavior of Materials
• Friday 29 September 2023, 15:00-16:00
• Mott Seminar Room, Cavendish Laboratory.

If you have a question about this talk, please contact Stephen Walley.

Polymer mechanics depend on the superposition of pressure, temperature, and strain rate; underlying polymer structure; and processing and aging. The objective of this research is to understand the pressure, temperature, and rate effects on mechanical properties in polymethylmethacrylate (PMMA). Time-temperature-pressure effects are investigated using dynamic mechanical analysis (DMA), quasi-static compression, split Hopkinson pressure bar (SHPB), and large volume press. These techniques allow for independent variation of pressure, strain rate, and temperature. The results of these experiments are compared using time-temperature-rate superposition. Additionally, a study by Bat’kov, et al. revealed a dramatic decrease in PMMA shear strength above 6 GPa under shock loading. Planar shock loading using gas gun drive was used to understand this phenomenon, in contrast to Bat’kov, et al. who used explosive loading. The first lateral manganin gauge experiment over 6 GPa using gas gun loading revealed a similar trend to that observed by Bat’kov.

This talk is part of the Physics and Chemistry of Solids Group series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room, Cavendish Laboratory
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Physics and Chemistry of Solids Group
• School of Physical Sciences
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.