Optimal Constant-Stress Accelerated Degradation Test Plans Using Nonlinear Generalized Wiener Process

Table 2

Comparisons of four degradation models with the degradation data of LEDs.

							AIC
	1.2889	0.3120	1831.7	0.0071	0.0270	4241.6	−8473.2
	0.0150	0.0018	1878.9	0.0021	0.0160	3685.3	−7360.6
	1.3781	0.0001	1853.1	0.026	—	3691.2	−7374.4
	1.3629	—	1851.2	0.010	0.0260	4156.9	−8305.8

Remark : “—” means that the estimate does not exist in that case.