Fragmentation Studies with Large Flaws

  • William L. Fourney
Part of the International Centre for Mechanical Sciences book series (CISM, volume 275)


This lecture describes results obtained when investigating fragmentation achieved in models which contained large flaws. Figure 1 is a photograph of a working bench face in the Pinesburg limestone quarry located near Hagerstown, Maryland. The segmentation seen in Figure 1 is typical of rock found in quarry locations. Much of the segmentation in a quarry bench is blast damage incurred in fragmenting the material that was removed in previous shots. These detonations loosen up the joints and faults that are present in the formation, but not to such an extent that the material can be removed.


Layered Medium Large Flaw Homogeneous Model Bond Line Fragmentation Study 
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  1. [1]
    Fourney, W.L., Barker, D.B. and Holloway, D.C., “Mechanism of Fragmentation in a Jointed Formation”, NSF report by University of Maryland, July 1979.Google Scholar
  2. [2]
    Erdogan, F. and Sih, G.C., “On the Crack Extension in Plates Under Plane Loading and Transverse Shear”, J. Bas. Engng. (ASME), Dec. 1963.Google Scholar
  3. [3]
    Singh, Bhupinder, “Experimental Investigation of the Effect of Tiffe Delays on Fragmentation in Homogeneous Models”, Report to NSF Photomechanics Lab, Jan. 1979.Google Scholar
  4. [4].
    Fourney, W.L. and Barker, D.B., “Effect of Time Delay on Fragmentation in a Jointed Model”, NSF report by University of Maryland, Aug. 1979.Google Scholar

Copyright information

© Springer-Verlag Wien 1983

Authors and Affiliations

  • William L. Fourney
    • 1
  1. 1.Mechanical Engineering College of EngineeringUniversity of MarylandCollege ParkUSA

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