Sonelastic
®
Systems
SA-BC Adjustable support for bars and cylinders
Pág. 21 de 24
The next table provides additional information focused on cylindrical specimens.
Flexural mode - I
Excitation from above and
signal acquisition from below,
both aligned with the center
of the specimen.
Cables positioned at 0.224 L.
Flexural mode - II
Excitation and signal
acquisition from below, both
at the specimen ends.
Cables positioned at 0.224 L.
Longitudinal mode
Top-centered excitation and
signal acquisition from
opposite sides of the
specimen.
Cables positioned at 0.224 L.
Fl torsional
modes - I
Excitation from above and
signal acquisition from below
from opposite sides and
ends.
Cables positioned at 0.224 L.
Fl torsional
modes - II
Excitation and acquisition
from above from at opposite
ends side.
Cables positioned at 0.224 L.
Considering the arrangements presented to the signal acquisition of torsional and longitudinal
modes, positioning the support-cables at a distance of 0.224L is not ideal and it may affect
damping measurements, however it has minimum influence (<0.1 %) when determining
Young’s Modulus.
