Performance Improvement of Membrane Stress Measurement Equipment through Evaluation of Added Mass of Membrane and Error Correction

Table 5

Result of the Type A membrane material under setup stress of or ( target ratio).

Case			Estimation stress (kN m^−1)		Considering added mass of membrane
	( target ratio)
	Setup stress (kN m^−1)				Estimation stress (kN m^−1)		Error of stress (kN m^−1)		Error ratio (%)
	21	1.69	1.94	1.40	1.52	1.70	1.84	−0.01	0.10	−0.59	5.15
22	2.55	3.82	2.07	2.77	2.50	3.35	0.05	0.47	1.96	12.30
23	3.44	5.57	2.52	4.03	3.04	4.87	0.40	0.70	11.63	12.57
24	4.37	7.29	3.35	4.99	4.04	6.02	0.33	1.27	7.55	17.42
25	5.39	9.20	4.09	5.87	4.93	7.06	0.46	2.14	8.53	23.26
26	6.33	10.95	4.79	6.44	5.77	7.74	0.56	3.21	8.85	29.32
27	7.25	12.94	5.28	7.05	6.35	8.46	0.90	4.48	12.41	34.62
28	8.17	14.75	5.70	7.47	6.84	8.96	1.33	5.79	16.28	39.25
29	9.15	16.88	6.06	7.59	7.27	9.10	1.88	7.78	20.55	46.09
30	10.09	18.56	6.61	7.43	7.93	8.91	2.16	9.65	21.41	51.99
31	2.13	1.07	1.78	0.87	2.16	1.05	−0.03	0.02	−1.41	1.87
32	4.02	1.98	3.13	1.52	3.79	1.85	0.23	0.13	5.72	6.57
33	5.65	2.81	4.25	2.07	5.14	2.50	0.51	0.31	9.03	11.03
34	7.62	3.79	5.38	2.81	6.49	3.39	1.13	0.40	14.83	10.55
35	9.43	4.69	6.10	3.50	7.34	4.23	2.09	0.46	22.16	9.81
36	11.49	5.76	6.83	4.24	8.21	5.10	3.28	0.66	28.55	11.46
37	13.45	6.75	7.10	5.08	8.52	6.10	4.93	0.65	36.65	9.63
38	15.48	7.75	7.54	5.61	9.04	6.74	6.44	1.01	41.60	13.03
39	17.25	8.65	8.05	5.79	9.64	6.96	7.61	1.69	44.12	19.54
40	19.37	9.70	8.17	6.17	9.78	7.41	9.59	2.29	49.51	23.61
Average							2.19	2.16	17.97	27.22
Standard deviation							2.72	2.66	14.67	13.69