Impact failure of polycrystalline diamond cutters

Conference item

Abstract:: Polycrystalline Diamond (PCD) Cutters are ultra-hard tools used for oil and gas drilling. These tools can fail in the form of spalling due to impact. In this paper, direct impact and quasi-static loading are used to investigate the failure force for leached PCD cutters when loaded at an angle on the edge of their chamfer with a PCD striker or platen. Impact experiments were performed using an impedance match system which ensures the sample is only loaded once; this allows subsequent analysis of the failure surfaces. The failure force at high deformation rate is around 8 kN and at low deformation rate 6.3−+2.3 kN. The failure force required for spalling increases with increasing deformation rate. High speed imaging is also used to explore the failure history of the cutters.

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Publisher:: EDP Sciences
Journal:: EPJ Web of Conferences More from this journal
Volume:: 250
Article number:: 06014
Publication date:: 2021-09-09
Event title:: DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Event location:: Madrid, Spain
Event website:: https://www.dymat.org/conferences
Event start date:: 2021-09-20
Event end date:: 2021-09-24
DOI:: 10.1051/epjconf/202125006014
ISSN:: 2101-6275

Copyright holder:: Laurence et al
Rights statement:: © The Authors, published by EDP Sciences, 2021 This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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