nowadays, by successful application of on time production concept in other concepts like production management and storage, the need to complete the processing of jobs in their delivery time is considered a key issue in industrial environments. unrelated parallel machines scheduling is a general mood of classic problems of parallel machines. in some of the applications of unrelated parallel mac...

In this research, a mathematics model is proposed to describe the mission availability for bounded-cumulative-downtime system. In the proposed model, the cumulative downtime and cumulative uptime are considered as constraints simultaneously. The mission availability can be defined as the probability that all repairs do not exceed the bounded cumulative downtime constraint of such system before ...

PT. XYZ is a company that produces motorcycle and car tires. This has fairly broad product market, so the products it manufactures have good quality. In producing tires, one of machines used in tires an extrusion press machine. carrying out its production, experiences downtime period August-December 2022, where biggest occurs August, which 1890 minutes. After conducting analysis using Overall E...

<p>Cleanroom parameters such as temperature, relative humidity and particle count are vital in maintaining cleanliness. People machines working inside the cleanroom main contributors for sudden changes of separameters. Measurements monitoring these therefore necessary to reduce rejects downtime production micro-electro-mechanical systems (MEMS). This paper presents a method developmentof ...

Production machines are the most important part of a production system. Machines need effective and efficient maintenance to be able guarantee support process run well. The steel industry is an that produces various types shapes with one being Computer Numerical Control (CNC) type BT-A16. These often have problems such as downtime interfere experience. purpose this research find out in CNC BT-A...