The
term
rheology
was
coined
in
1920s,
and
was
inspired
by
a
Greek
quota)on,
"panta
rei",
"everything
flows".
• In
prac)ce,
rheology
is
principally
concerned
with
extending
the
"classical"
disciplines
of
elas)city
and
(Newtonian)
fluid
mechanics
to
materials
whose
mechanical
behavior
cannot
be
described
with
the
classical
theories.