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Ceramic Crack Inspection

  • US 20120235693A1
  • Filed: 03/20/2011
  • Published: 09/20/2012
  • Est. Priority Date: 03/20/2011
  • Status: Abandoned Application
First Claim
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1. A method of detecting a crack in a ceramic body including surfaces and having electrical conductivity and/or semiconductivity, comprising the steps of:

  • affixing one or a plurality of electrode pairs on one or more surfaces of said ceramic body,measuring electrical resistance through each pair of said electrode pairs,comparing said measured resistance value with a respective reference resistance value that is either a previously measured resistance value at said electrode pair or a standard value of the same material involving no crack, anddetermining the presence or absence of a crack based on said comparison between said measured and said reference resistance values, for each pair of said electrode pairs,wherein an increase of resistance over said reference value in one or more of said plurality of electrode pairs indicates the presence of a crack.

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