Abstract
The materials investigated were silicon carbide foams of various densities ranging from 7.7 % to 12.3 % of the bulk material density. They were characterized under pure shear and uniaxial compression. Special test procedures were developed for this testing. For shear characterization two pairs of prismatic strips were used in a three-rail fixture. Stress–strain curves to failure were obtained from which the shear modulus, shear strength and ultimate shear strain were determined. A statistical analysis based on the Weibull distribution function was conducted to determine expected differences in results obtained by different test methods, specifically differences between three-rail shear and torsion test results. A power law model was proposed to describe the variation of shear modulus with relative density. It was also shown that the parameters of this model depend on the porosity structure of the foam for the same density. Similar tests were conducted under uniaxial compression. It was found that the Young’s modulus varies linearly with the relative density of the foam.
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References
Gibson LJ, Ashby MF (1997) Cellular solids: structure and properties, 2nd edn. Cambridge University Press, Cambridge
Christensen RM (2000) Mechanics of cellular and other low density materials. Int J Solid Struct 37:93–104
Colombo P, Modesti M (1999) Silicon oxycarbide ceramic foams from a preceramic polymer. J Am Ceram Soc 82(3):573–578
Nangrejo MR, Bao X, Edirisinghe MJ (2000) The structue of ceramic foams produced using polymeric precursors. J Mat Sci Lett 19:787–789
Bao X, Nangrejo MR, Edirisinghe MJ (2000) Preparation of silicon carbide foams using polymeric precursor solutions. J Mater Sci 35(17):4365–4372
Daniel IM (2009) Influence of core properties on the failure of composite sandwich beams. J Mech Mater Struct 4(7–8):1271–1286
ERG (2011) Duocel-reticulated carbon, ceramic and metal foam basics. http://www.ergaerospace.com/Description.htm
Huang JS, Gibson LJ (1993) Optimum cell size and density of brittle foams. J Mater Sci Lett 12:602–604
Daniel IM, Ishai O (2006) Engineering mechanics of composite materials, 2nd edn. Oxford University Press, New York
Daniel IM, Cho J-M (2011) Characterization of anisotropic polymeric foam under static and dynamic loading. Exp Mech 51(8):1395–1403
Gibson LJ (1989) Modelling the mechanical behavior of cellular materials. Mater Sci Eng A110:1–36
Daniel IM, Weil NA (1963) The influence of stress gradient upon fracture of brittle materials. ASME paper no. 63-WA-228
Acknowledgement
This work was supported by the Universal Technology Corporation under the US AFRL Rapid Insertion and Development of Hypersonic Materials (RIDHM) program.
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© 2014 The Society for Experimental Mechanics, Inc.
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Daniel, I.M., Fenner, J.S., Chen, MY. (2014). Mechanical Characterization and Modeling of Ceramic Foam Materials. In: Tandon, G., Tekalur, S., Ralph, C., Sottos, N., Blaiszik, B. (eds) Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00873-8_25
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DOI: https://doi.org/10.1007/978-3-319-00873-8_25
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