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Crack Propagation and Fracture of Rock Specimen Loaded in Compression.

Authors
Peng-SS; Ortiz-CA
Source
Proc Internat Conf on Dynamic Crack Propagation Lehigh Univ Bethlehem Pennsylvania, 7/10-12/72 :17 pages
Link
NIOSHTIC No.
10010874
Abstract
The stress distribution within a prismatic specimen loaded uniaxially was determined by the three-dimensional finite element method. The stresses are nonuniform and vary from point to point. Prismatic specimens of Tennessee marble were loaded uniaxially. Pictures of the two adjacent side surfaces were taken simultaneously at various deformation levels. Crack patterns in these pictures were then traced in the transparency and compared for crack growth study. Grain boundary cracks were identified as griffith cracks. A model consisting of a crack subjected to the combination of modes 1 and 2 of basic crack surface displacement was developed. Quantitatively, the model was found applicable for describing the fracture processes of Tennessee marble specimens.
Publication Date
19730101
Document Type
OP;
Fiscal Year
1973
NTIS Accession No.
NTIS Price
Identifying No.
OP 81-74
Source Name
Proc. Internat. Conf. on Dynamic Crack Propagation, Lehigh Univ., Bethlehem, Pennsylvania, 7/10-12/72
State
PA; TN;
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