A Probabilistic Model of the Unidirectional Tensile Strength of Fiber-Reinforced Polymers for Structural Design

Table 5

The 5^th percentile characteristic value with a 75% confidence level.

Set no.	Sample size	Fiber type
			N	LN	W	N	LN	W
1	7	Glass	0.899	0.904	0.854	0.971	0.973	0.956
2	5	Glass	0.890	0.895	0.860	0.960	0.964	0.947
3	6	Glass	0.876	0.880	0.865	0.960	0.963	0.954
4	13	Carbon	0.912	0.916	0.863	0.982	0.984	0.972
5	36	Carbon	0.928	0.930	0.897	0.992	0.992	0.988
6	29	Glass	0.894	0.897	0.868	0.986	0.987	0.982
7	25	Carbon	0.869	0.872	0.854	0.981	0.982	0.978
8	20	Carbon	0.887	0.889	0.878	0.981	0.983	0.980
9	36	Carbon	0.829	0.831	0.811	0.978	0.981	0.977
10	49	Glass	0.821	0.827	0.797	0.980	0.983	0.978
11	30	Carbon	0.900	0.902	0.876	0.987	0.988	0.983
12	31	Carbon	0.797	0.808	0.746	0.971	0.976	0.965
13	21	Carbon	0.806	0.815	0.777	0.966	0.972	0.962
14	48	Carbon	0.717	0.740	0.659	0.964	0.973	0.961
15	24	Carbon	0.833	0.839	0.813	0.974	0.977	0.971
16	30	Carbon	0.827	0.837	0.786	0.976	0.979	0.971
17	6	Carbon	0.889	0.893	0.866	0.964	0.967	0.955
18	7	Carbon	0.938	0.940	0.912	0.983	0.984	0.974
19	7	Carbon	0.915	0.918	0.881	0.975	0.977	0.964
20	7	Carbon	0.945	0.946	0.940	0.985	0.985	0.982
21	7	Carbon	0.872	0.878	0.838	0.962	0.966	0.950
22	7	Carbon	0.896	0.899	0.889	0.970	0.972	0.966
23	8	Glass	0.925	0.927	0.910	0.980	0.981	0.975
24	14	Glass	0.912	0.914	0.893	0.983	0.984	0.979
25	20	Carbon	0.871	0.873	0.857	0.979	0.980	0.976
26	20	Glass	0.926	0.928	0.913	0.988	0.989	0.986
27	19	Carbon	0.879	0.882	0.857	0.979	0.981	0.975
28	6	Glass	0.922	0.924	0.915	0.975	0.977	0.971
29	5	Glass	0.895	0.898	0.880	0.962	0.965	0.955
30	5	Glass	0.942	0.944	0.911	0.980	0.981	0.967
31	5	Glass	0.885	0.887	0.912	0.959	0.961	0.966
32	5	Glass	0.888	0.894	0.849	0.960	0.964	0.943
33	5	Glass	0.877	0.882	0.842	0.955	0.960	0.940
38	30	Glass	0.873	0.878	0.845	0.983	0.985	0.979
39	5	Glass	0.994	0.994	0.992	0.998	0.998	0.997
40	5	Glass	0.981	0.982	0.973	0.994	0.994	0.990
41	5	Glass	0.977	0.977	0.966	0.992	0.992	0.988
42	5	Glass	0.943	0.944	0.923	0.980	0.981	0.972
43	5	Glass	0.983	0.983	0.976	0.994	0.994	0.991
44	30	Carbon	0.921	0.922	0.910	0.990	0.990	0.988
45	20	Carbon	0.911	0.915	0.861	0.986	0.987	0.977
46	20	Carbon	0.912	0.914	0.901	0.986	0.987	0.984
47	7	Glass	0.947	0.949	0.921	0.985	0.986	0.977
48	60	Carbon	0.896	0.899	0.869	0.990	0.991	0.988
49	9	Glass	0.856	0.856	0.876	0.962	0.965	0.967
50	8	Glass	0.867	0.870	0.862	0.963	0.967	0.961
51	10	Glass	0.853	0.860	0.828	0.964	0.968	0.957
52	9	Glass	0.885	0.891	0.841	0.971	0.974	0.958
53	8	Glass	0.935	0.937	0.920	0.983	0.984	0.978
54	8	Glass	0.902	0.905	0.879	0.974	0.976	0.966
55	72	Carbon	0.682	0.725	0.612	0.966	0.977	0.963
56	58	Carbon	0.663	0.695	0.631	0.959	0.971	0.961
57	59	Carbon	0.834	0.841	0.808	0.984	0.986	0.982
58	67	Carbon	0.853	0.859	0.821	0.987	0.988	0.984
Average			0.884	0.889	0.861	0.977	0.979	0.971
c.o.v.			0.065	0.059	0.074	0.011	0.010	0.013