Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reliability and Time‐dependent Fracture
This chapter describes procedures for determining the reliability of ceramic components under static stresses. Two factors are critical in assessing the mechanical reliability of components: the statistical nature of the strength of these materials, and environmentally enhanced flaw growth, leading to time‐dependent failure under static stresses. The stress state in the component is typically determined using a finite element analysis. While there is a tendency to accept that a finite element analysis is without error, inexact knowledge of parameters such as the elastic modulus can lead to uncertainty in the stress prediction. The chapter focuses on statistical methods of estimating uncertainties in the measured fracture parameters. It is shown that error propagation models can be used to combine uncertainties in laboratory test data and thereby determine a standard deviation for a predicted time to failure.
Reliability and Time‐dependent Fracture
This chapter describes procedures for determining the reliability of ceramic components under static stresses. Two factors are critical in assessing the mechanical reliability of components: the statistical nature of the strength of these materials, and environmentally enhanced flaw growth, leading to time‐dependent failure under static stresses. The stress state in the component is typically determined using a finite element analysis. While there is a tendency to accept that a finite element analysis is without error, inexact knowledge of parameters such as the elastic modulus can lead to uncertainty in the stress prediction. The chapter focuses on statistical methods of estimating uncertainties in the measured fracture parameters. It is shown that error propagation models can be used to combine uncertainties in laboratory test data and thereby determine a standard deviation for a predicted time to failure.
Reliability and Time‐dependent Fracture
Freiman, Stephen W. (Autor:in) / Mecholsky, John J. Jr. (Autor:in)
The Fracture of Brittle Materials ; 223-233
14.12.2018
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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