Evolution of internal stresses in composites during creep

Conference · Sun Oct 01 00:00:00 EDT 1995

OSTI ID:100563

Lara-Curzio, E; Ferber, M K ^[1]

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1. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

The redistribution of internal stresses in a composite with linear viscoelastic constituents was calculated when the composite is subjected to a constant stress at a temperature where the phases would exhibit time-dependent deformation. It was found for the case of an elastic fiber embedded in a matrix that behaves as a Burgers material under distortion and elastically under dilation, that the normal interfacial stress and the axial stress in the matrix undergo complete relaxation at long times. The implications of these findings are discussed in relation to the behavior of ceramic matrix composites.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 100563
• Report Number(s): CONF-941144-; ISBN 1-55899-266-9; TRN: IM9540%%34
• Resource Relation: Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic matrix composites -- Advanced high-temperature structural materials; Lowden, R.A.; Ferber, M.K. [eds.] [Oak Ridge National Lab., Oak Ridge, TN (United States)]; Hellmann, J.R. [ed.] [Pennsylvania State Univ., University Park, PA (United States). Center for Advanced Materials]; Chawla, K.K. [ed.] [New Mexico Inst. of Mining and Technology, Socorro, NM (United States)]; DiPietro, S.G. [ed.] [Textron Specialty Materials, Lowell, MA (United States)]; PB: 493 p.; Materials Research Society symposium proceedings, Volume 365
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
CREEP
CERAMICS
FIBERS
MATHEMATICAL MODELS
TIME DEPENDENCE
ELASTICITY
INTERFACES
DEFORMATION
STRESSES