KCA :: Korea Composites Application

Table1. Recommended Dimensions for Test Specimen 3-Point Loading

Nominal Specimen Depth, mm	Specimen Width, mm	Support Span-to-Depth Ratio
		L/d = 16 to 1			L/d = 32 to 1			L/d = 40 to 1			L/d = 60 to 1
		Specimen Span, mm	Support Span, mm	Rate of Cross-head Motion, mm/ min	Specimen Span, mm	Support Span, mm	Rate of Cross-head Motion, mm /min	Specimen Span, mm	Support Span, mm	Rate of Cross-head Motion, mm /min	Specimen Span, mm	Support Span, mm	Rate of Cross-head Motion, mm/ min
0.8	25	50	16	0.5	50	25	1.3	60	30	2.0	60	48	4.8
1.6	25	50	25	0.8	80	50	2.8	90	60	4.3	124	95	9.4
2.4	25	60	40	1.0	100	80	401	120	95	6.4	185	143	14.2
3.2	25	80	50	1.3	130	100	5.3	180	130	8.4	247	190	18.8
4.8	13	100	80	2.0	191	150	8.1	240	191	12.7	372	286	28.4
6.4	13	130	100	2.8	250	200	10.9	330	250	17.0	495	381	37.8
9.6	13	191	150	4.1	380	300	16.3	480	380	25.4	744	572	56.8
12.7	13	250	200	5.3	495	410	21.6	640	510	34.0	991	762	76.2
19.1	19	380	300	8.1	740	610	32.5	940	760	50.8	1486	1143	114
25.4	25	495	410	10.9	990	810	43.4	1240	1020	67.8	1981	1524	152

* Maximum Fiber Stress, Test MethodⅠ(3-Point Loading)

* Modulus of Elasticity, Test Method Ⅰ(3-Point Loading)