ISIS Neutron and Muon Source Data Journal

Residual stress measurements in polycrystalline diamond cutters

Abstract: Polycrystalline diamond cutters are ultra-hard tools used for oil and gas drilling. They are produced by sintering diamond particles at High Pressure (5.5+ GPa) and High Temperature (1300+ K). After synthesis, the cutter is returned to room temperature and pressure. The significant mismatches in thermal expansion coefficient and stiffness between the diamond table and the tungsten carbide substrate result in residual stresses. The magnitude and distribution of these residual stresses is believed to impact cutter failure rate in industrial use. We have produced finite element models to estimate these residual stress distributions for different substrate-diamond interface geometries. The proposal is to use neutron diffraction to map strains as a means of confirming the residual stress magnitudes and locations experimentally, and for correlation with impact tests

Principal Investigator: Professor Richard Todd
Local Contact: Dr Saurabh Kabra
Experimenter: Dr Robin Laurence
Experimenter: Professor Clive Siviour

DOI: 10.5286/ISIS.E.RB1910157

ISIS Experiment Number: RB1910157

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Richard Todd et al; (2019): Residual stress measurements in polycrystalline diamond cutters, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910157

Data is released under the CC-BY-4.0 license.