
341Testing of Industrial Textiles
© 2008 Taylor & Francis Group, LLC
is a parallel, unidirectional beam as in the DCB. The three main methods of
loading the specimen are thus as follows:
1. End-loaded shear: specimen is loaded as a cantilever in specialized
xturing
2. End-notched exure (ENF): specimen is loaded in three-point bending
resulting in unstable delamination growth.
3. Four-end-notched exure: as for the ENF except the specimen is loaded
in four-point bending resulting in stable delamination growth
(Figure 12.9).
The 4ENF loading has advantages over the other tests. The four-point
bending loading xture uses rollers to support the ...