Method and apparatus for determining tensile strength

Details Method and apparatus for determining tensile strength Method and apparatus for determining tensile strength

1982-05-28

1984-04-24

Ciarlante, Anthony V.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 308

Patent

active

044440588

ABSTRACT:
A method and apparatus for determining the statistical distribution of apparent tensile strength of rock, the size effect with respect to tensile strength, as well as apparent deformation modulus of both intact and fractured or jointed rock. The method is carried out by inserting a plug of deformable material, such as rubber, in an opening of a specimen to be tested. The deformable material is loaded by an upper and lower platen until the specimen ruptures, whereafter the tensile strength is calculated based on the parameters of the test specimen and apparatus.

REFERENCES:
patent: 756644 (1904-04-01), Johnson
patent: 3111840 (1963-11-01), Barnet et al.
patent: 3122916 (1964-03-01), Sedlacek
patent: 3792608 (1974-02-01), Holm et al.
patent: 3934464 (1976-01-01), McCauley
Report LBL-13286 "A Statistical Fracture Mechanics Approach to the Strength of Brittle Rock," J. L. Ratigan, Ph.D. Thesis, University of California, Berkeley, Calif., Jun. 1981.

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