Open Conference Systems, SMAT 2019

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Behavior of Expanded Polypropylene Foam to Multiple Tests at Different Loading Rates
Maria Luiza Besliu-Gherghescu, Raluca Florentina Negrea, Paul Constantin Predoiu, Marcel Alexandru Draghici, Stefan Tabacu, Nicolae Doru Stanescu

Last modified: 2020-01-02

Abstract


Expanded Polypropylene (EPP) is an engineering plastic that can be used to absorb kinetic energy. This paper is centered around the uses of Expanded Polypropylene Foam.

It has been extensively used in various applications like packaging, automotive cushion and human safety, industrial components and miscellaneous goods, due to its unique combination of material characteristics such as stiffness, heat resistance and processability in addition to light weight material density. However, the performance of this foam has to be studied as a function of several parameters such as density, microstructure and also the strain rate imposed during dynamic and static loading.

During the past few decades, new materials and technology have caused major changes to the way materials have been seen as earlier. Safety and comfort are a priority, but production cost is also a huge factor. The cost and demand pressure on higher performance have stimulated the improvement of manufacturing process of polyolefin in general and expanded polypropylene in particular.

Expanded Polypropylene Foam (EPP) is a newcomer in the field of foam materials and it is as good as, or according this paper, a bit better than many of the other already existing solutions. To analyze all this data, custom MATLAB codes were developed. The results of the tests will all converge into a database that will be available for all to use.

 


Keywords


EPP; Closed cells; High strain rate compression; DAQ; performance