Variability of Dynamic Properties of Rubber Compounds for Elastomeric Bearings

Table 4

Proposed experimental λ-factors, λ-factors from EN 15129 annex J, and related coefficient of combinations ψ for the UB/LB analyses.

	Proposed				EN 15129				ψ
	G		ξ		G		ξ
	LB	UB	LB	UB	LB	UB	LB	UB	LB/UB
Temperature (40°/−10°)	0.88	1.52	0.91	1.23	1.00	1.25	1.00	1.09	0.70
Ageing	1.00	1.18	1.00	0.86	1.00	1.20	1.00	1.20	1.00
Frequency	0.94	1.16	0.93	0.91	—	—	—	—	0.70
Repeated cycles	0.90	1.18	0.95	1.09	—	—	—	—	0.70
Production	0.95	1.07	1.00	1.00	0.80	1.20	0.80	1.20	0.70
Combined	0.79	2.11	0.86	0.86	0.80	1.61	0.80	1.09