Journal of Materials Science

, Volume 19, Issue 9, pp 3028–3042 | Cite as

The deformation stress of highly brittle explosive crystals from real contact area measurements

  • M. Munawar Chaudhri
Papers

Abstract

An experimental study is described in which the deformation stress of millimetre-size highly brittle as-grown single crystals of explosive materials has been determined using a novel experimental technique. The technique involves the loading of the test crystal against a transparent glass plate with in situ measurements of the real area of contact under load using an optical microscope. For all explosive crystals the deformation stress was found to increase with load reaching a plateau at higher loads. The maximum deformation stress of a crystal was found to be considerably lower than its Vickers diamond hardness value. A discussion on the determination of the uniaxial yield stress of small particles is also given.

Keywords

Brittle Explosive Contact Area Glass Plate Area Measurement 

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Copyright information

© Chapman and Hall Ltd 1984

Authors and Affiliations

  • M. Munawar Chaudhri
    • 1
  1. 1.Cavendish LaboratoryCambridgeUK

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