Characterising Group Interaction Modelling for Complex Composite Materials
European Office of Aerospace Research and Development Arlington United States
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An instrument to measure the heat capacity of isotropic heterogeneous materials has been designed, built and demonstrated. Two distinguishing attributes are the ability to measure as a function of temperature down to 25kelvin, and the large, circa nine cubic centimetres, sample volumes that are probed. The former is achieved using liquid helium as a cryogen, and allows for the parameterization andor validation of polymer models, such as Group Interaction Modelling, down to those temperatures. This is significant because many important physical processes in polymers occur below the boiling point of liquid nitrogen, the most commonly used cryogen, and cannot otherwise be directly observed.
- Laminates and Composite Materials