Instrumentation development for electrical conductivity imaging in polycrystalline diamond cutters

Bogdanov, G. P.; Wiggins, J.; Rhodes, John S.; Bertagnolli, K.; Ludwig, Roland

doi:10.1063/1.4789236

Cited by 2 publications

(2 citation statements)

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“…Bogdanov, et al demonstrated advanced electrical impedance tomography (EIT) for imaging internal and external defects in polycrystalline diamond cutters (PDC). [53,54] The PDC are fabricated by sintering diamond powder onto a tungsten carbide-cobalt substrate. The cobalt acts as a catalyst for bond formation between the diamond crystals.…”

Section: Contact 4-point Measurements and Electrical Impedance Tomogrmentioning

confidence: 99%

America Makes: National Additive Manufacturing Innovation Institute (NAMII) Project 1: Nondestructive Evaluation (NDE) of Complex Metallic Additive Manufactured (AM) Structures

Todorov¹,

Spencer²,

Gleeson³

et al. 2014

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Section: Contact 4-point Measurements and Electrical Impedance Tomogrmentioning

confidence: 99%

America Makes: National Additive Manufacturing Innovation Institute (NAMII) Project 1: Nondestructive Evaluation (NDE) of Complex Metallic Additive Manufactured (AM) Structures

Todorov¹,

Spencer²,

Gleeson³

et al. 2014

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show abstract

“…The main weaknesses that kept it from factory deployment have been long computation time for conductivity reconstruction, difficulties in bringing the sample in contact with the sensor and labor-intensive sensor pin replacement. The mechanical issues have been effectively solved with the latest revision of the instrument [4]. An adjustable, universal sample holder and a fieldswappable sensor make using and maintaining the instrument significantly easier.…”

Section: Introductionmentioning

confidence: 99%

Software optimization for electrical conductivity imaging in polycrystalline diamond cutters

Bogdanov¹,

Wiggins²,

Bertagnolli³

et al. 2014

AIP Conference Proceedings

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We previously reported on an electrical conductivity imaging instrument developed for measurements on polycrystalline diamond cutters. These cylindrical cutters for oil and gas drilling feature a thick polycrystalline diamond layer on a tungsten carbide substrate. The instrument uses electrical impedance tomography to profile the conductivity in the diamond table. Conductivity images must be acquired quickly, on the order of 5 sec per cutter, to be useful in the manufacturing process. This paper reports on successful efforts to optimize the conductivity reconstruction routine, porting major portions of it to NVIDIA GPUs, including a custom CUDA kernel for Jacobian computation.

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Instrumentation development for electrical conductivity imaging in polycrystalline diamond cutters

Cited by 2 publications

References 0 publications

America Makes: National Additive Manufacturing Innovation Institute (NAMII) Project 1: Nondestructive Evaluation (NDE) of Complex Metallic Additive Manufactured (AM) Structures

America Makes: National Additive Manufacturing Innovation Institute (NAMII) Project 1: Nondestructive Evaluation (NDE) of Complex Metallic Additive Manufactured (AM) Structures

Software optimization for electrical conductivity imaging in polycrystalline diamond cutters

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