Tensile strength of hybrid composites determined its ability
to resist breaking under tensile stress. The tensile properties of
kenaf–Kevlar hybrid composites are compared with various
kenaf structures. Fig. 4 shows the tensile stress–strain curves of
the tested samples. The curves show the brittleness and ductile
nature of the composites. For woven and UD samples, the
samples elongated with the increased stress level up to certain
values where the kenaf layer failure occurred. The curve is
continuous until total failure of the samples occurred as the
outer layers of the Kevlar fabric break. No such observation was
reported in the mat samples. Based on the curves, it was
observed that the elongation at the break of woven samples is
lesser than the other samples. The tensile properties of samples
are compared and given in Fig. 5. The tensile strength and
tensile modulus are found to be higher, 145.8 MPa and
3336.71 MPa, respectively, for composites with woven kenaf.
The tensile strength and modulus of sample UD were recorded
in intermediate with the values of 115.36 MPa and
2368.48 MPa. The lowest tensile properties are observed in
non-woven kenaf sample M with the strength and modulus of