Fabrication and Experimental Estimation of Mechanical Properties of Kevlar-Glass/Epoxy Interwoven Composite Laminate

Table 4

Flexural test results.

Orientation	Gauge length L = 4 × b (mm)	Breadth (b) (mm)	Thickness (t) (mm)	Load (P) (N)	Flexural strength (F = 3PL/2bt^2) (MPa)	Average flexural strength (MPa)
1 × 1	55.2	13.8	3.2	1,390	814.45	905.68
	55.2	13.4	2.8	1,310	1,032.48
	56	14.1	3.1	1,430	886.49
	56.4	14	3.2	1,380	814.37
	55.8	13.6	2.9	1,340	980.61
3 × 3	56	14	3.3	1,480	815.43	860.86
	55.2	13.8	3.2	1,410	826.17
	54	13.5	3.1	1,390	867.85
	55.7	14.2	2.9	1,430	1,000.46
	56.3	13.6	3.2	1,310	794.39
5 × 5	52.8	13.2	3.2	1,440	843.75	859.79
	55.6	13.9	3.1	1,310	817.90
	54.8	13.7	3	1,390	926.67
	55.3	14.3	3.3	1,410	751.05
	53.8	13.6	2.9	1,360	959.57