A Preventive Maintenance Model Subject to Sequential Inspection for a Three-Stage Failure Process
Xiaoxiao Caoa, Chao Guoa, Huasheng Xiongabc*(), Duo Lib, and Xiaojin Huangc

.

Figure 2.. (a) Corrective replacement is implemented in $({{S}_{{{A}_{n}}+m}},{{S}_{{{A}_{n}}+m+1}})$; (b)Corrective replacement is performed in $({{S}_{{{A}_{n}}+m+1}},{{S}_{{{A}_{n}}+m+1}}+\tau )$