Investigations into Spall strengths of geological materials.

POSTER

Abstract

A number of geological materials e.g. hyperbyssal kimberlite, underwent shock loading in a spall configuration to determine the dynamic tensile strength. VISAR was used as the main diagnostic system. As expected the spall strength was found to be significantly lower than the corresponding dynamic compressive or shear strengths but significantly larger than the quasi-static value. It was also found that the visibility of spall signals decreased with increasing sample thickness, this difference is attributed to the progressive comminution of the material.

Authors

  • J.E. Field

    • Cavendish Laboratory, Cambridge University

  • Christopher Braithwaite

    • Cavendish Laboratory, Cambridge University
    • University of Cambridge, UK

  • A.R. Guest

    • De Beers Group Services

  • William Proud

    • University of Cambridge, Madingley Road, Cambridge, CB3 0HE, UK
    • Cavendish Laboratory, University of Cambridge
    • Cavendish Laboratory, Cambridge University
    • University of Cambridge, UK
    • Univeristy of Cambridge, UK
    • University of Cambridge