Method and apparatus for testing rock tenacity

Details Method and apparatus for testing rock tenacity Method and apparatus for testing rock tenacity

1979-04-19

1980-12-02

Swisher, S. Clement

Measuring and testing

Testing by impact or shock

Specimen impactor detail

73 82, 734254, G01N 330, G01N 348

Patent

active

042364027

ABSTRACT:
A method for performing strength tests on material to be mined includes the steps of preparing a flat surface on the material to be tested, forming one or more grooves in the flat surface, impacting the flat surface with a test device at a predetermined angle and at a predetermined force which is at least as great as that necessary to break out material located between the impact point and groove, repeating the preceding step at a predetermined distance from the first impact, at substantially the same force and at substantially the same angle.
An impact guide and sample collector guides the test device toward the test surface at a predetermined angle and collects material broken out during the test.

REFERENCES:
patent: 2216989 (1940-10-01), St Clair
patent: 3732725 (1973-05-01), Allen et al.

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