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Title: Method and apparatus for determining tensile strength

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.

Inventors:
 [1]
  1. (Rapid City, SD)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
864968
Patent Number(s):
4444058
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; determining; tensile; strength; statistical; distribution; apparent; rock; size; effect; respect; deformation; modulus; intact; fractured; jointed; carried; inserting; plug; deformable; material; rubber; specimen; tested; loaded; upper; platen; ruptures; whereafter; calculated; based; parameters; tensile strength; calculated based; /73/

Citation Formats

Ratigan, Joe L. Method and apparatus for determining tensile strength. United States: N. p., 1984. Web.
Ratigan, Joe L. Method and apparatus for determining tensile strength. United States.
Ratigan, Joe L. Sun . "Method and apparatus for determining tensile strength". United States. https://www.osti.gov/servlets/purl/864968.
@article{osti_864968,
title = {Method and apparatus for determining tensile strength},
author = {Ratigan, Joe L.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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