THE MICROMECHANICS OF IMPACT FRACTURE OF ROCK

Impact methods are used to create controlled dynamic fracture in Arkansas novaculite and laser interferometry is used to determine the time resolved stress during fracture. Experimental fracture stresses and fracture energies are determined under varying dynamic tensile loading conditions. Rate-dependent fracture is observed and found to be in accordance with concepts of linear elastic fracture mechanics applied to microstructural fracture initiation. A micromechanical fracture model based on these concepts is used to calculate the dynamic fracture results. (A) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00207624
• Corporate Authors:

  Pergamon Press, Incorporated

  Headington Hill Hall
  Oxford OX30BW,    
• Authors:
  • Grady, D E
  • Kipp, M E
• Publication Date: 1979-10

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 293-302
• Serial:
  • International Journal of Rock Mechanics and Mining Science
  • Volume: 16
  • Issue Number: 5
  • Publisher: Pergamon Press, Incorporated
  • ISSN: 0020-7624

Subject/Index Terms

• TRT Terms: Failure; Impacts; Load tests; Mathematical models; Rock mechanics; Rocks; Shock (Mechanics); Stresses; Tension; Test procedures
• Old TRIS Terms: Microfracturing
• ITRD Terms: 5520: Failure; 6473: Mathematical model; 4154: Rock; 5757: Rock mechanics; 5471: Shock; 5575: Stress (in material); 5502: Tension; 6288: Test method
• Subject Areas: Geotechnology; Highways; I43: Rock Mechanics;

Filing Info

• Accession Number: 00309350
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 21 1980 12:00AM