“…Natural fiber composite materials are such an appropriate material that they can replace synthetic composite for many practical applications where we need high strength and low density. Pineapple leaf fiber (PALF) [54][55][56], palm, hemp [57,58], alfa, jute [42,52,59], cotton, bamboo, flax [60], silk [46,48], kenaf [43,49,61], and many others have been used in recent studies and the development of natural fiber composite structures. Table 1 compares natural and glass fibers and demonstrates in plain terms whether one has advantages over the other in several situations.…”