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|Title:||Cyclic fatigue of a sintered Al2O3/ZrO2 ceramic||Authors:||Duan, K.
|Issue Date:||Jan-1995||Citation:||Duan, K., Mai, Y.W., Cotterell, B. (1995-01). Cyclic fatigue of a sintered Al2O3/ZrO2 ceramic. Journal of Materials Science 30 (20) : 5192-5198. ScholarBank@NUS Repository. https://doi.org/10.1007/BF00356069||Abstract:||A systematic experimental and theoretical study on the crack growth behaviour of a sintered Al2O3/ZrO2 ceramic under cyclic loading is presented. It is found that in the cyclic fatigue experiments conducted on the single-edge-notched beam (SENB) geometry, for similar testing conditions, the crack growth rates are significantly faster than those under static fatigue. Al2O3/ZrO2 therefore suffers genuine mechanical fatigue. Further experiments with the compact tension (CT) geometry show that the mechanical fatigue effect arises mainly from the degradation of the bridging mechanism. A theoretical analysis based on the compliance technique and a power law relationship between the crack-wake bridging stress and the crack-face separation is developed to evaluate quantitatively the degradation of the bridging stress due to cyclic fatigue. © 1995 Chapman & Hall.||Source Title:||Journal of Materials Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/92675||ISSN:||00222461||DOI:||10.1007/BF00356069|
|Appears in Collections:||Staff Publications|
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