The GDS Resonant Column Apparatus (RCA) is
used to excite one end of a confined solid or hollow cylindrical
soil specimen. The specimen is excited in
torsion or flexure (bending) by means of an electromagnetic drive
system. Once the fundamental resonant frequency is established from
measuring the motion of the free end, the velocity of the
propagating wave and the degree of material damping are derived. The
shear modulus (torsion) or Young’s modulus (flexure) is then
obtained from the derived velocity and the density of the sample.
Download full
specification datasheet as
pdf
[213kb]
Case Study: Resonant
Column, Colorado School of Mines
pdf
[281kb]
What are its
uses
GDS RCA software (see Fig. 1) is used for control and data
acquisition of the RCA apparatus. The software allows testing to
occur via a simple, user-friendly interface. The tests that may be
performed using the GDS RCA software are as follows:
