Method and apparatus for determining tensile strength

Patent · 31 December 1983

OSTI ID:864968

Ratigan, Joe L ^[1]

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1. Rapid City, SD

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4444058
• OSTI ID: 864968
• Country of Publication: United States
• Language: English

Related Subjects

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apparatus
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determining
distribution
effect
fractured
inserting
intact
jointed
loaded
material
method
modulus
parameters
platen
plug
respect
rock
rubber
ruptures
size
specimen
statistical
strength
tensile
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tested
upper
whereafter