[Retracted] Spare Parts Stocking Decision Strategy and Service Logistics Cost Optimization of Two-Echelon Service Logistics System considering Multifailure Mode

Table 2

LRUs’ failure data.

Failure mode	Control communication			Gas switch			Trigger
	Failure cause	Quantity	Influence	Failure cause	Quantity	Influence	Failure cause	Quantity	Influence
Hard failure	Communication blocking	3	Restart	Communication blocking	3	Restart	Communication blocking	1	Restart
	Software failure	3	Restart	Electromagnetic interference	3	Restart	Electromagnetic interference	1	Restart
	Electromagnetic interference	6	Restart	Barometric instability	2	Delay time	Unstable pilot tube pressure	1	Delay time
Soft failure	PLC controller damaged	3	Cancel	Insulation performance degradation	8	Cancel	Pilot tube performance degradation	10	Cancel
Total	17			16			13