Determination of Flexural Properties of Rigid PUR Foams Using Digital Image Correlation

Tudor Voiconi; Emanoil Linul; Liviu Marşavina; Tomasz Sadowski; Marcin Kneć

doi:10.4028/www.scientific.net/SSP.216.116

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HomeSolid State PhenomenaSolid State Phenomena Vol. 216Determination of Flexural Properties of Rigid PUR...

Determination of Flexural Properties of Rigid PUR Foams Using Digital Image Correlation

Abstract:

Cellular materials represent a new class of materials; main parameters that characterize the cellular structure are relative density, shape of the cell (open or closed), wall thickness and cell diameter. The purpose of this paper is to investigate the microstructure of foams materials and also to determine the flexural properties of this rigid PUR foams using Digital Image Correlation (DIC). The rigid PUR foams cells morphology and pore distribution for three densities (100, 145 and 300 kg/m³) were studied before testing through scanning electron microscopy. Determination of flexural properties was carried out on rectangular beam samples using ARAMIS 2D system. This method provides a substantial increase in accuracy for measuring strain and is based on the calculation of surface deformation using a set of digital images from undeformed stage to different deformed stages. The specimens were subjected to static three points bending tests with loading rate of 2 mm/min, at room temperature and loading was applied in rise direction of the foam. Experimental results show that main mechanical properties such as flexural modulus and flexural strength values increases with increasing of density.

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Periodical:

Solid State Phenomena (Volume 216)

Pages:

116-121

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.216.116

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Online since:

August 2014

Authors:

Tudor Voiconi, Emanoil Linul*, Liviu Marşavina, Tomasz Sadowski, Marcin Kneć

Keywords:

3PB Tests, Closed Cell PUR Foam, DIC, Flexural Modulus/Strength, Sem Images

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* - Corresponding Author

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