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Note: Modified anvil design for improved reliability in DT-Cup experiments.

Simon A Hunt1, David P Dobson1

  • 1Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United Kingdom.

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This summary is machine-generated.

The modified Deformation T-Cup (DT-Cup) apparatus now achieves high success rates for high-pressure, controlled strain-rate deformation experiments. This advancement prevents anvil failure, enabling reliable material property studies.

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Area of Science:

  • High-pressure experimental geophysics
  • Materials science under extreme conditions

Background:

  • The Deformation T-Cup (DT-Cup) is a modified multi-anvil apparatus designed for controlled strain-rate deformation experiments.
  • Previous designs utilizing hexagonal anvils at pressures exceeding 18 GPa frequently resulted in anvil failure, limiting experimental success.

Purpose of the Study:

  • To redesign the DT-Cup to prevent deformation anvil failure.
  • To improve the experimental success rate of high-pressure, controlled strain-rate deformation experiments.

Main Methods:

  • Replaced hexagonal deformation anvils with cubic anvils.
  • Incorporated split deformation wedge extensions to enhance support for the anvils.
  • Modified first-stage wedges to complement the new anvil and wedge extension design.

Main Results:

  • The modified DT-Cup design successfully prevented the rupture of deformation anvils.
  • Experimental success rates were restored to levels comparable to standard multi-anvil apparatus.
  • Reliable high-pressure deformation data can now be obtained.

Conclusions:

  • The redesigned DT-Cup overcomes previous limitations, enabling robust high-pressure deformation studies.
  • This improved apparatus facilitates research into material behavior under extreme conditions.
  • The modifications ensure consistent and reliable experimental outcomes.