Applications in Ceramic Structures

  • W. H. Müller
  • R. Ramme
  • A. C. Bornhauser
Chapter

Abstract

The interest in ceramic materials for construction of engineering components has grown considerably during the last decade. This is not surprising because ceramics offer excellent physical properties that are necessary to meet the demands of many high-technology applications. Examples of such properties are high-temperature endurance, extreme wear resistance, nontoxicity, and biocompatibility. On the other hand, the brittleness and low fracture resistance of ceramic materials can be major shortcomings. Unlike metals, ceramics do not yield plastically under sudden load and impact, and they are usually highly susceptible to scratches and flaws arising during production or use. Consequently, special attention must be paid by the design engineer to avoid high peak tensile stresses and to use only specimens that are absolutely flawless, at least when viewed macroscopically. Moreover, because of microscopic flaw size variations the strength within a batch of ceramic specimens can vary considerably. Another problem is that the performance behavior of ceramics is time dependent. A ceramic part can fail over time as a result of stress—corrosion cracking (i.e., the subcritical growth of microscopic cracks inside the stressed ceramic material resulting from water vapor or other environmental influences) even if the tensile stresses are below the critical level.

Keywords

Fracture Toughness Stress Intensity Factor Weibull Distribution Brittle Material Stress Intensity Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media Dordrecht 1995

Authors and Affiliations

  • W. H. Müller
  • R. Ramme
  • A. C. Bornhauser

There are no affiliations available

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