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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 3    June 2002

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Failure modes of PDC cutters under
different loads
LI Xi-bing(李夕兵)1, ZHAO Fu-jun(赵伏军)1,
D.A.Summers2, G.Rupert2

1.Institute of Mining and Rock Engineering,
Central South University, Changsha 410083, China;
2.Rock Mechanics and Explosives Research Center,
University of Missouri-Rolla, MO65401, USA

Abstract:The capability of several types of flat PDC cutters to withstand combined loads were tested and evaluated by the impact and cutting of single PDC cutter on granite in a linear impact-cutting table. The primary failure modes of PDC cutters withstanding different combined loads w, ere investigated and analyzed. The suggestions of enhancing PDC cutters to be suitable for drilling very hard rock have been made.

 

Key words: failure mode; PDC cutters; combined loads

ISSN 1672-7029
CN 43-1423/U

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