| STUDY ON DETERMINING K_(Ic) OF CERAMIC MATERIALS BY INDENTATION MICROFRACTURE |
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| 作者姓名： | 宋显辉 |
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| 作者单位： | Song XianhuiCentre of Material Research and Test，Wuhan University of Technology，Wuhan 430070，China |
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| 摘 要： | In this paper,by studying the accuracy ofindentation microfrature,it is pointed out that the residualstress in the indentation site plays a critical role,whichmakes the theoretlcal analysis extremely difficult and theindentation microcracks slowly expaned,therefore,affectsthe accuracy of measurement.It is concluded that accordingto the microtstructure analysis it is not acceptable to estimatecompletely the accuracy of determining K_(?) by indentationmicrofracture from the point of view of classical fracturemechanics.
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STUDY ON DETERMINING K_(Ic) OF CERAMIC MATERIALS BY INDENTATION MICROFRACTURE |
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| Song XianhuiCentre of Material Research and Test,Wuhan University of Technology,Wuhan ,China.STUDY ON DETERMINING K_(Ic) OF CERAMIC MATERIALS BY INDENTATION MICROFRACTURE[J].Journal of Wuhan University of Technology. Materials Science Edition,1995(1). |
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| Authors: | Song XianhuiCentre of Material Research and Test Wuhan University of Technology Wuhan China |
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| Affiliation: | Song XianhuiCentre of Material Research and Test,Wuhan University of Technology,Wuhan 430070,China |
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| Abstract: | In this paper,by studying the accuracy of indentation microfracture,it is pointed out that the residual stress in the indentation site plays a critical role,which makes the theoretical analysis extremely difficult and the indentation microcracks slowly expaned, therefore, affects the accuracy of measurement. It is concluded that according to the infrastructure analysis it is not acceptable to estimate completely the accuracy of determining K? by indentation microfracture from the point of view of classical fracture mechanics. |
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| Keywords: | indentation microfractitre residual stress microcrack |
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