2.3. Mechanical testing
2.3.1. Tensile test
The hybrid composite material fabricated is cut into required
dimension using a saw cutter and the edges finished by using emery
paper for mechanical testing. The tensile test specimen is prepared
according to the ASTM D638 standard. The dimensions,
gauge length and cross-head speeds are chosen according to the
ASTM D638 standard. A tensile test involves mounting the specimen
in a machine and subjecting it to the tension. The testing process
involves placing the test specimen in the testing machine and
applying tension to it until it fractures. The tensile force is recorded
as a function of the increase in gauge length. During the application
of tension, the elongation of the gauge section is recorded against
the applied force.
The tensile test is performed on the Universal Testing Machine
(UTM) Make FIE (Model: UTN 40, S.No. 11/98-2450). There are
three different kind of specimen are prepared according to the fi-
bers used. The first specimen consists of sisal–jute–GFRP fibers.
The second specimen consists of sisal–GFRP and the third specimen
consists of jute–GFRP fibers. The fabricated specimen for tensile
test is presented in Fig. 1. The experiments are repeated for
several times and the average values are used for discussion.