Creep of SiC/RBSN composite: Analytical modeling

B. B. Hill, C. E. Bakis, H. T. Hahn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


The objective of the present investigation is to develop the capability to predict creep properties of ceramic matrix composites (CMCs) from experimentally determined creep properties of the constituent phases. The particular composite system chosen consists of Textron SCS-6 SiC fibers embedded in a reaction-bonded silicon nitride (RBSN) matrix. Two approaches were employed to develop analytical models: finite element and rule-of-mixtures. The effect of multiaxiality was included using creep equations based on equivalent stress and equivalent strain. Predictions of the creep behavior of unidirectionally reinforced composites were carried out for longitudinal, transverse, and shear mechanical loadings. The rule-of-mixtures method was found to be capable of predicting macroscopic creep strains which were in good agreement with those predicted by the finite element method. Longitudinal creep strain predictions agreed well with the available experimental data. Stress redistribution between the fibers and matrix coincided with early stages of primary creep at elevated temperatures.

Original languageEnglish (US)
Title of host publicationConstitutive Behavior of High-Temperature Composites
PublisherPubl by ASME
Number of pages15
ISBN (Print)0791811174
StatePublished - Dec 1 1992
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA
Duration: Nov 8 1992Nov 13 1992

Publication series

NameAmerican Society of Mechanical Engineers, Materials Division (Publication) MD


OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAnaheim, CA, USA

All Science Journal Classification (ASJC) codes

  • General Engineering


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