Carbon foam characterization tensile evaluation of carbon foam ligaments

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Title: Carbon foam characterization tensile evaluation of carbon foam ligaments
Author: Verdugo Rodriguez, Rogelio Alberto
Abstract: A methodology for ligament isolation and specimen preparation for tensile testing of single ligaments from the unit cell of open -cell carbon foams has been successfully developed and implemented . Results are presented for ligaments of three different carbon foam designations . Two of them are reticulated vitreous carbon (RVC ) foams of 20 and 45 pores -per - inch (ppi ) coated with SiC by chemical vapor deposition (CVD ) and the other is a RVC 20 ppi foam without coating . Scanning electron microscopy and digital imaging analysis is used to analyze the fracture surfaces posts tests . The ultimate strength of each ligament evaluated . Weibull statistics is used to describe the strength distribution of ligaments . While the distribution of strengths of the carbon foam ligaments (RVC ) could be described with a one -population distribution , it is found that a two -population Weibull distribution is necessary to describe the distribution of strength of the SiC coated ligaments .
URI: http : / /hdl .handle .net /1969 .1 /56
Date: 2004-09-30

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Carbon foam characterization tensile evaluation of carbon foam ligaments. Available electronically from http : / /hdl .handle .net /1969 .1 /56 .

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