skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Durability evaluation of ceramic components using CARES/LIFE

Abstract

The computer program CARES/LIFE calculates the time-dependent reliability of monolithic ceramic components subjected to thermomechanical and/or proof test loading. This program is an extension of the CARES (Ceramics Analysis and Reliability Evaluation of Structures) computer program. CARES/LIFE accounts for the phenomenon of subcritical crack growth (SCG) by utilizing the power law, Paris law, or Walker equation. The two-parameter Weibull cumulative distribution function is used to characterize the variation in component strength. The effects of multiaxial stresses are modeled using either the principle of independent action (PIA), the Weibull normal stress averaging method (NSA), or the Batdorf theory. Inert strength and fatigue parameters are estimated from rupture strength data of naturally flawed specimens loaded in static, dynamic, or cyclic fatigue. Application of this design methodology is demonstrated using experimental data from alumina bar and disk flexure specimens which exhibit SCG when exposed to water.

Authors:
; ; ;
Publication Date:
Research Org.:
National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
OSTI Identifier:
5185061
Report Number(s):
N-94-24682; NASA-TM-106475; E-8402; NAS-1.15:106475; CONF-940626-
Resource Type:
Conference
Resource Relation:
Conference: 39. international gas turbine and aeroengine congress and exposition: maintain the edge, The Hague (Netherlands), 13-16 Jun 1994
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; COMPUTERIZED SIMULATION; MECHANICAL PROPERTIES; C CODES; CRACK PROPAGATION; MECHANICAL TESTS; COMPUTER CODES; MATERIALS TESTING; SIMULATION; TESTING; 360603* - Materials- Properties

Citation Formats

Nemeth, N N, Powers, L M, Janosik, L A, and Gyekenyesi, J P. Durability evaluation of ceramic components using CARES/LIFE. United States: N. p., 1994. Web.
Nemeth, N N, Powers, L M, Janosik, L A, & Gyekenyesi, J P. Durability evaluation of ceramic components using CARES/LIFE. United States.
Nemeth, N N, Powers, L M, Janosik, L A, and Gyekenyesi, J P. Sat . "Durability evaluation of ceramic components using CARES/LIFE". United States.
@article{osti_5185061,
title = {Durability evaluation of ceramic components using CARES/LIFE},
author = {Nemeth, N N and Powers, L M and Janosik, L A and Gyekenyesi, J P},
abstractNote = {The computer program CARES/LIFE calculates the time-dependent reliability of monolithic ceramic components subjected to thermomechanical and/or proof test loading. This program is an extension of the CARES (Ceramics Analysis and Reliability Evaluation of Structures) computer program. CARES/LIFE accounts for the phenomenon of subcritical crack growth (SCG) by utilizing the power law, Paris law, or Walker equation. The two-parameter Weibull cumulative distribution function is used to characterize the variation in component strength. The effects of multiaxial stresses are modeled using either the principle of independent action (PIA), the Weibull normal stress averaging method (NSA), or the Batdorf theory. Inert strength and fatigue parameters are estimated from rupture strength data of naturally flawed specimens loaded in static, dynamic, or cyclic fatigue. Application of this design methodology is demonstrated using experimental data from alumina bar and disk flexure specimens which exhibit SCG when exposed to water.},
doi = {},
url = {https://www.osti.gov/biblio/5185061}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: