Determination of Knitted Fabric Porosity Using Digital Imaging Techniques

Table 2

Results of fabric structural parameters of FKM knitted samples and image analysis results of percentage of void values of black and white region of images of fabric.

Structures	Tension of carriage	Course per inch ()	Wales per inch ()	Stitch density ()	Stitch length, (mm)	Porosity (white mask) (%)	Porosity (black mask) (%)
Plain	11	1.2	1.64	1.96	9.4	48.2	48.3
	12	1.02	1.57	1.6	10.5	49.7	49
	13	0.98	1.46	1.43	10.7	50.1	49.2
	14	0.9	1.34	1.21	11.4	50.5	49.7
	15	0.88	1.31	1.15	11.8	51.9	50.3
	16	0.83	1.29	1.07	12	52.2	50.4
	17	0.72	1.15	0.82	13.9	54.8	51.3
	18	0.61	0.8	0.49	14.2	55.4	51.8
Rib 1 1	11	1.1	1.77	1.95	10.5	49.1	49.2
	12	1.02	1.65	1.68	12.8	49.5	49.7
	13	0.98	1.61	1.58	13.8	49.6	50.5
	14	0.91	1.5	1.37	15.5	49.7	50.8
	15	0.85	1.47	1.25	16	50.1	51
	16	0.81	1.41	1.4	16.8	51.1	52.4
	17	0.75	1.38	1.14	17.3	51.2	52.5
	18	0.7	1.32	0.92	17.9	53.1	53.4
Rib 2 1	10	1.04	1.68	1.74	11.9	43.2	40.1
	11	1.01	1.52	1.54	12.4	45.1	42.2
	12	0.92	1.44	1.32	13.8	45.2	44.1
	13	0.81	1.41	1.14	14.2	47.7	49.1
	14	0.91	1.38	1.26	15.2	48.9	49.2
	15	0.87	1.26	1.09	15.7	49.3	50.4
	16	0.83	1.2	0.99	16.3	50	51.4
	17	0.79	1.17	0.92	16.7	51.3	51.6
Single jersey	13	1.18	1.48	1.75	11.9	44.2	47.2
	14	1.16	1.44	1.67	13.1	45.3	48.1
	15	1.12	1.42	1.6	13.6	47	48.7
	16	1.08	1.4	1.51	14.1	51	49
	17	1.06	1.38	1.46	14.4	51.3	49.1
	18	0.98	1.3	1.27	16.6	53.5	49.6
	19	0.86	1.28	1.1	17.2	54.9	53.4
	20	0.62	1.2	0.74	18.6	55.2	54.1