β Scribed by Benoit Iung; Adolfo Crespo Marquez
No coin nor oath required. For personal study only.
With today's growing demand on system productivity, availability and safety, product quality, customer satisfaction and the decrease of profit margins, the importance of the maintenance function has increased . Indeed the maintenance function plays a critical role in a company's ability to compete on the basis of cost, quality and delivery performance (maintenance synchronised with production requirements) . For example, studies over the last 20 years have indicated that around Europe, the indirect cost of maintenance is equivalent to between 4% and 8% of total sales turnover (similar amount as for the direct cost). Thus, in the countries where modern maintenance practices have yet to be well adopted by industry, the potential savings from modern maintenance are massive. These modern and efficient maintenances imply to identify, at least, the root-cause of component failures, reduce the failures of production systems, eliminate costly unscheduled shutdown maintenances, and to improve productivity as well as quality. To support this role, the maintenance concept undergone through several major developments to lead to proactive considerations which require changes in transforming traditional ''fail and fix'' maintenance practices to ''predict and prevent'' e-maintenance methodology [4] (potential impact on service to customer, product quality, cost reduction. . .). The advantage of the latter is that maintenance is performed only when a certain level of equipment deterioration occurs rather than after a specified period of time or usage (from current mean-time-between failure (MTBF) practices to mean-time-between-degradation (MTBD) technologies). E-maintenance is a sub-concept of e-manufacturing and e-business for supporting next generation manufacturing practices (NGMS).
Therefore, e-maintenance is defined at the ''Intelligent Maintenance Centre'' 1 as ''the ability to monitor plant floor assets, link the production and maintenance operations systems, collect feedbacks from remote customer sites, and integrate it upper level enterprise applications.'' A more general definition is that ''maintenance management concept whereby assets are monitored and managed over the Internet.'' Indeed Internet
π SIMILAR VOLUMES