https://doi.org/10.1051/epjconf/202125006014
Impact Failure of Polycrystalline Diamond Cutters
1
Unversity of Oxford, Department of Materials, Parks Road, Oxford, OX1 3PH, UK
2
University of Oxford, Department of Engineering Science, Parks Road, Oxford, OX1 3PJ, UK
* Corresponding author: Robin.laurence@materials.ox.ac.uk
Published online: 9 September 2021
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.
© 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.
