Ny. Zhou et Tk. Ghosh, ONLINE MEASUREMENT OF FABRIC BENDING BEHAVIOR - PART II - EFFECTS OF FABRIC NONLINEAR BENDING BEHAVIOR, Textile research journal, 68(7), 1998, pp. 533-542
A generalized fabric bending model is developed based on the nonlinear
bending moment-curvature relationship of fabrics. This model makes it
possible to theoretically investigate the effects of fabric nonlinear
bending behavior on measured bending property values. The dependence
of measured parameters (e.g., bending length, bending rigidity) on the
conditions for the cantilever and heart loop, loop 3, and loop 4 test
s is determined theoretically. Calculated results show good agreement
with experimental observations reported in the literature for the cant
ilever and heart loop. An important discovery in this investigation is
that the bending length values calculated and measured from loop 3 an
d loop 4 are.not influenced by fabric sample length if that length is
beyond a certain critical value.