strain relief method

strain relief method

[′strān ri¦lēf ‚meth·əd]
(mining engineering)
A method for determining absolute strain and stress within rock in place by boring a smooth hole in the rock and inserting a gage capable of measuring diametral deformation, and overcoring the hole with a large coring bit; the change in the diameter of the hole when the rock cylinder is free to expand is a function of the original stress in the rock and its elastic modulus.
References in periodicals archive ?
Several strain relief methods, including boring and slitting techniques, were evaluated by performing analytical studies.