This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Sullivan, R. M. Articles by Koenig, J. R. Search for Related Content Social Bookmarking                         What's this?

Development of Design Analysis Methods for Carbon Silicon Carbide Composite Structures

Mail Stop 49-7, NASA Glenn Research Center, 21000 Brookpark Road Cleveland, OH 44135, USA, Roy.M.Sullivan{at}grc.nasa.gov

Pappu L.N. Murthy

Mail Stop 49-7, NASA Glenn Research Center, 21000 Brookpark Road Cleveland, OH 44135, USA

Subodh K. Mital

The University of Toledo, Toledo, OH, USA

Joseph L. Palko

Connecticut Reserve Technologies, Cleveland, OH, USA

Jacques C. Cuneo

Southern Research Institute, 757 Tom Martin Drive Birmingham, AL 35211, USA

John R. Koenig

Southern Research Institute, 757 Tom Martin Drive Birmingham, AL 35211, USA

The stress—strain behavior at room temperature and at 1100^° C (2000^°F) is measured for two carbon fiber-reinforced silicon carbide (C/SiC) composite materials: a two dimensional (2D) plain-weave quasi-isotropic laminate and a 3D angle interlock woven composite. Previously developed micromechanics-based material models are calibrated by correlating the predicted material property values with the measured values. Four-point beam-bending subelement specimens are fabricated with these two fiber architectures and four-point bending tests are performed at room temperature and at 1100^°C. Displacements and strains are measured at the mid-span of the beam and recorded as a function of load magnitude. The calibrated material models are used in concert with a nonlinear finite-element solution using ABAQUS to simulate the structural response of the two materials in the four-point beam bending tests. The structural response predicted by the nonlinear analysis method compared favorably with the measured response for both materials and both test temperatures. Results show that the material models scale-up fairly well from coupons to subcomponent level.

Key Words: carbon silicon carbide composites • micromechanics • analytical material modeling • mechanical properties • thermal properties • user-supplied subroutine • UMAT.

Journal of Composite Materials, Vol. 41, No. 10, 1197-1215 (2007)
DOI: 10.1177/0021998306067305


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?