 The Rheology Testing Laboratory contains
state-of-the-art facilities available for the measurement
of the viscoelastic properties of liquids,
gels and solids. Routine measurements of
shear viscosity, normal force, and dynamic viscoelastic
properties can be made using a Weissenberg
rheogoniometer model R20 operating
under computer control. A Haake RS-100
torque rheometer for creep and yield stress
determination has recently been acquired. A
modified model R17 rheogoniometer for following
rapid transients during stress growth
and relaxation experiments is available.
Instrumentation for measurements of linear
and nonlinear acoustics phenomena and a
falling sphere rheometer for precision measurements
in opaque and transparent materials are
used to study liquids and suspensions. A magnetic
microsphere rheometer is used to characterize
biological samples with small sample
volume limitations. Particle characterization
and fabrication equipment is available. The
manufacturing of advanced composites, with
particular emphasis on fiber resin compatibility,
is studied using a Cahn electrobalance. | 
