Young's Modulus, Poisson's ratio
A rock core sample is cut to length, and the ends are machined flat. The specimen is placed in a loading frame and, if required, heated to the desired test temperature. Axial load is continuously increased on the specimen, and deformation is monitored as a function of load. The elastic constants are used to calculate the stress and deformation in rock structures.
Enough samples to represent a valid average of the type of rock under consideration
Right circular cylinder, with diameter of at least 1 7/8 in and a length to diameter ratio of 2 to 2.5:1
Compression testing, loading tests, modulus of elasticity, modulus-Young's, rock