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Syntactic foams [SF] are a porous composite material resulting from the mixture of Hollow Glass Micro Spheres [HGMS] with a polymeric binder. Beyond a set of technological advantages over the polymer considered alone, SF present as an essential feature the possibility to control in wide limits the amount, the shape and the size of the pores and for that reason are being used for benchmarking in the area of shock wave [SW] behavior of porous materials. In this paper, SW loading experiments of SF samples were performed in order to assess the high-pressure range Hugoniot equation of state as a function of the SF initial density. Hugoniot data were assessed coupling the SW velocity within the SF samples with the SW velocity in a reference material or with manganin gauge results. The results obtained present a significant variation with the initial specific mass and can be described with appreciable precision by the Thouvenin/Hofmann Plate Gap model, while the concordance between the experimental results and the Gruüneisen model seems to be very dependent on the Gruüneisen coefficient values. | 1.26 MB | Adobe PDF |
Advisor(s)
Abstract(s)
Syntactic foams [SF] are a porous composite material resulting from the mixture of Hollow Glass Micro Spheres [HGMS] with a polymeric binder. Beyond a set of technological advantages over the polymer considered alone, SF present as an essential feature the possibility to control in wide limits the amount, the shape and the size of the pores and for that reason are being used for benchmarking in the area of shock wave [SW] behavior of porous materials. In this paper, SW loading experiments of SF samples were performed in order to assess the high-pressure range Hugoniot equation of state as a function of the SF initial density. Hugoniot data were assessed coupling the SW velocity within the SF samples with the SW velocity in a reference material or with manganin gauge results. The results obtained present a significant variation with the initial specific mass and can be described with appreciable precision by the Thouvenin/Hofmann Plate Gap model, while the concordance between the experimental results and the Gruüneisen model seems to be very dependent on the Gruüneisen coefficient values.
Description
Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM; Nashville, TN; United States; 28 June 2009 through 3 July 2009
Keywords
Syntactic Foams Hugoniot Plate Gap Model
Pedagogical Context
Citation
J. Ribeiro, R. Mendes, I. Plaksin, J. Campos, C. Capela; HIGH‐PRESSURE RANGE SHOCK WAVE DATA FOR SYNTACTIC FOAMS. AIP Conf. Proc. 28 December 2009; 1195 (1): 1265–1268. https://doi.org/10.1063/1.3295036.
Publisher
American Institute of Physics