Dynamic strength properties of nano-composites:correcting dispersion effects 2007-01-2870
Dynamic material characterization is a fundamental issue in structural analysis and the main apparatus used to perform dynamic material tests is the so called Split Hopkinson Pressure Bar, SHPB. This device is based on the propagation of elastic waves in long bars. Due to lateral inertia, the waves traveling in the bars change their shape, which causes some errors on the evaluation of the stress-strain-strain rate in the tested sample. In this article one examines the influence of the correction of such effect on experimental data measured when testing a composite material. The material is a S2-glass/epoxy with nanoclays that were impregnated in the matrix for strength enhancement. Experimental data are discussed in the light of the dispersion correction, showing that such a procedure is an important aspect for a correct representation of the composite strength properties.
Citation: Moura, R., Santiago, R., and Alves, M., "Dynamic strength properties of nano-composites:correcting dispersion effects," SAE Technical Paper 2007-01-2870, 2007, https://doi.org/10.4271/2007-01-2870. Download Citation
Author(s):
Rafael Traldi Moura, Rafael Celeghini Santiago, Marcilio Alves
Affiliated:
Group of Solid Mechanics and Structural Impact Dep. of Mechatronics and Mechanical Systems Eng. University of São Paulo - São Paulo - Brazil
Pages: 9
Event:
SAE Brasil 2007 Congress and Exhibit
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Composite materials
Pressure
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