Accession Number:

AD0743988

Title:

Dynamic Tensile Failure in Rocks

Descriptive Note:

Annual technical rept. 12 Feb 1971-11 Feb 1972

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s):

• Shockey, Donald A.
• Petersen, Carl F.
• Curran, Donald R.
• Rosenberg, John T.

Report Date:

1972-03-11

Pagination or Media Count:

79.0

Abstract:

A simple homogeneous rock, Arkansas novaculite, was chosen for dynamic tensile failure studies. Experimental techniques for performing dynamic tensile tests on rocks were developed and used to provide meaningful measurements of dynamic tensile strength. A way to eliminate the occurrence of undesirable radial cracking of the specimen during testing was found specimen recovery and fracture analysis methods were implemented. Novaculite specimens were characterized with respect to static and dynamic fracture strength, fracture toughness, defect and microstructure, and other properties and parameters pertinent to the fracture behavior.

Descriptors:

• *SEDIMENTARY ROCK
• CRACKS
• DEFECTS(MATERIALS)
• FAILURE(MECHANICS)
• FRACTURE(MECHANICS)
• LIGHT GAS GUNS
• LOADS(FORCES)
• MATHEMATICAL MODELS
• MICROSTRUCTURE
• STRAIN(MECHANICS)
• TENSILE PROPERTIES

Subject Categories:

• Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE