Effect of Natural Fillers on Mechanical Properties of GFRP Composites

Table 1

Summary of experimental findings.

Property	FRP
	Glass fiber reinforced epoxy				Glass fiber reinforced polyester
	No filler	Wheat husk filler	Coconut coir filler	Rice filler	No filler	Wheat husk filler	Coconut coir filler	Rice filler
Tensile strength (N/mm^2)	398.73	353.05	372	307.65	352.5	283	315	324.9
Compressive strength (N/mm^2)	351.3	222.24	289	280.43	212.9	173.69	224.14	199.47
Cross breaking strength (N/mm^2)	896.07	698.03	827.45	733.33	614	522	702	548
Impact strength (N/mm^2)	263.84	206.47	214.84	234.37	234.37	245.53	278.93	256.69
Hardness (K-scale)	56.1	30.33	42.83	40.33	41	33.25	35.9	41.375
Specific gravity	1.6727	1.6152	1.6629	1.6166	2.082	1.6723	1.707	1.7272
Water absorption	0.0343	0.6541	0.205	0.2316	0.47395	1.824	0.7522	0.685
Glass content	52.14	54.77	52.83	55.55	52.39	54.02	51.41	53.19