Residual Stress Calculations in Whisker-Reinforced Ceramic Matrix Composites

Conference · Thu Jan 31 23:00:00 EST 1991

OSTI ID:5941868

Li, Zhuang ^[1]; Bradt, Richard C. ^[2]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)
2. Univ. of Nevada, Reno, NV (United States)

By using a modified Eshelby method, the residual stresses in SiC whisker/alumina matrix and sapphire whisker/mullite matrix composites have been calculated. The results indicate that significant residual stresses are present and are in good agreement with independent experimental measurements. Four factors are observed to influence the magnitudes and distributions of the residual stresses in these multiphase composites. They are: (i) the thermal expansion mismatch, Δα, (ii) the elastic modulus mismatch, ΔE, (iii) the geometry, (L/d) ratio, of the reinforcing phase and (iv) the concentration or volume fraction of the reinforcing phase.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5941868
• Report Number(s): ANL/CP--72402; CONF-910591--1; ON: DE91011163
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
COMPOSITE MATERIALS
CORUNDUM
CRYSTALS
DATA
ELASTICITY
EXPANSION
EXPERIMENTAL DATA
GEOMETRY
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MATHEMATICS
MECHANICAL PROPERTIES
MINERALS
MONOCRYSTALS
MULLITE
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REINFORCED MATERIALS
RESIDUAL STRESSES
SAPPHIRE
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
TENSILE PROPERTIES
THEORETICAL DATA
THERMAL EXPANSION
THERMOELASTICITY
WHISKERS