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Measuring Crack Length in Coarse Grain Ceramics

  • Letters in Fracture and Micromechanics
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Abstract

Due to a coarse grain structure, crack lengths in precracked magnesium aluminate (MgAlO4) spinel specimens could not be measured optically, so the crack lengths and fracture toughness were estimated by strain gage measurements. An expression was developed via finite element analysis to correlate the measured strain with crack length in four-point flexure. The fracture toughness estimated by the strain gaged samples and another standardized method were in agreement.

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Authors and Affiliations

  1. NASA Glenn Research Center, Cleveland, Ohio, 44135, USA

    Jonathan Salem & Louis Ghosn

Authors
  1. Jonathan Salem
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  2. Louis Ghosn
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Correspondence to Jonathan Salem.

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Salem, J., Ghosn, L. Measuring Crack Length in Coarse Grain Ceramics. Int J Fract 164, 319–323 (2010). https://doi.org/10.1007/s10704-010-9461-1

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  • DOI: https://doi.org/10.1007/s10704-010-9461-1

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