Design of high temperature ceramic components against fast fracture and timedependent failure using cares/life
Abstract
A probabilistic design methodology which predicts the fast fracture and timedependent failure behavior of thermomechanically loaded ceramic components is discussed using the CARES/LIFE integrated design computer program. Slow crack growth (SCG) is assumed to be the mechanism responsible for delayed failure behavior. Inert strength and dynamic fatigue data obtained from testing coupon specimens (Oring and Cring specimens) are initially used to calculate the fast fracture and SCG material parameters as a function of temperature using the parameter estimation techniques available with the CARES/LIFE code. Finite element analysis (FEA) is used to compute the stress distributions for the tube as a function of applied pressure. Knowing the stress and temperature distributions and the fast fracture and SCG material parameters, the life time for a given tube can be computed. A stressfailure probabilitytime to failure (SPT) diagram is subsequently constructed for these tubes. Such a diagram can be used by design engineers to estimate the time to failure at a given failure probability level for a component subjected to a given thermomechanical load.
 Authors:

 Univ. of Wisconsin, Platteville, WI (United States)
 Cleveland State Univ., Cleveland, OH (United States)
 NASALewis Research Center, Cleveland, OH (United States); and others
 Publication Date:
 OSTI Identifier:
 83226
 Report Number(s):
 CONF940416
TRN: 95:0050040007
 Resource Type:
 Conference
 Resource Relation:
 Conference: 96. annual meeting of the American Ceramic Society (ACS), Indianapolis, IN (United States), 2528 Apr 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic transactions: Design for manufacturability of ceramic components. Volume 50; Ghosh, A.; Hiremath, B.; Halloran, J. [eds.]; PB: 279 p.
 Country of Publication:
 United States
 Language:
 English
 Subject:
 36 MATERIALS SCIENCE; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; 33 ADVANCED PROPULSION SYSTEMS; CERAMICS; FRACTURE PROPERTIES; C CODES; FAILURES; PROBABILITY; CRACK PROPAGATION; FINITE ELEMENT METHOD; SERVICE LIFE; HEAT ENGINES
Citation Formats
Jadaan, O M, Powers, L M, and Nemeth, N N. Design of high temperature ceramic components against fast fracture and timedependent failure using cares/life. United States: N. p., 1995.
Web.
Jadaan, O M, Powers, L M, & Nemeth, N N. Design of high temperature ceramic components against fast fracture and timedependent failure using cares/life. United States.
Jadaan, O M, Powers, L M, and Nemeth, N N. Tue .
"Design of high temperature ceramic components against fast fracture and timedependent failure using cares/life". United States.
@article{osti_83226,
title = {Design of high temperature ceramic components against fast fracture and timedependent failure using cares/life},
author = {Jadaan, O M and Powers, L M and Nemeth, N N},
abstractNote = {A probabilistic design methodology which predicts the fast fracture and timedependent failure behavior of thermomechanically loaded ceramic components is discussed using the CARES/LIFE integrated design computer program. Slow crack growth (SCG) is assumed to be the mechanism responsible for delayed failure behavior. Inert strength and dynamic fatigue data obtained from testing coupon specimens (Oring and Cring specimens) are initially used to calculate the fast fracture and SCG material parameters as a function of temperature using the parameter estimation techniques available with the CARES/LIFE code. Finite element analysis (FEA) is used to compute the stress distributions for the tube as a function of applied pressure. Knowing the stress and temperature distributions and the fast fracture and SCG material parameters, the life time for a given tube can be computed. A stressfailure probabilitytime to failure (SPT) diagram is subsequently constructed for these tubes. Such a diagram can be used by design engineers to estimate the time to failure at a given failure probability level for a component subjected to a given thermomechanical load.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {8}
}