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A brief guide to conducting failure analysis on ceramic components

  • W. Harrer , R. Morrell and R. Danzer
Published/Copyright: August 21, 2023
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Abstract

Failure investigations are mainly conducted for the purpose of clarifying the root causes for component failure. Possible aims of these investigations are to analyze the unexpected failure of a component during operation, to improve the material and to assess the quality of a product. Usually, ceramics can be used in similar ways as other structural materials. There are particularities, however, which need to be considered in failure analysis of ceramic components.

This paper will therefore give a brief overview of the types of damage which may occur in ceramic materials, with the focus being on failures occurring at room temperature and medium temperatures (e. g., brittle fracture, contact stresses or stresses caused by rapid temperature changes).

Kurzfassung

Schadensanalysen dienen in erster Linie dazu, die Ursachen für das Versagen von Bauteilen aufzuklären. Mögliche Ziele dieser Untersuchungen sind ein unerwartetes Versagen der Teile im Betrieb zu analysieren, das Material zu verbessern oder die Qualität eines Produktes zu untersuchen. Für gewöhnlich können Keramiken ähnlich wie andere Strukturwerkstoffe eingesetzt werden, allerdings gibt es Besonderheiten auf die bei einer Schadensanalyse keramischer Bauteile achtgegeben werden muss.

Diese Arbeit gibt daher auch einen kurzen Überblick über Schadensformen, die bei keramischen Werkstoffen auftreten können. Fokus wird dabei auf Versagensursachen gelegt, die bei Raumtemperatur und mittleren Temperaturen auftreten (z. B. Sprödbruch, Kontaktbeanspruchungen oder Beanspruchungen durch schnelle Temperaturwechsel).

References / Literatur

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Received: 2023-06-13
Accepted: 2023-06-21
Published Online: 2023-08-21
Published in Print: 2023-08-30

© 2023 Walter de Gruyter GmbH, Berlin/Boston, Germany

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