A machining process oriented modeling approach for reliability optimization of failure-prone manufacturing systems

Reliability analysis plays an important role in cost saving and productivity improvement of manufacturing systems. little attention is paid to reliability analysis methods to reduce failure effects in the initial stage of system design activities such as process planning. this article proposes a machining process oriented modeling approach for reliability optimization of manufacturing systems. in the approach,machines' operation states are separated to distinguish traditional reliability modeling approach for electronic components. an event graph is used for computing system reliability in terms of states transition. to demonstrate the validity of the proposed approach,a job shop manufacturing system that produces high-voltage electrical apparatus is provided as an example. it is concluded that different process schemes have important influence on system reliability. the proposed approach can assist the decision-making for reliable scheduling plans in real production.