نتایج جستجو برای: maintenance condition monitoring

تعداد نتایج: 735148  

2004
Mohaseeena Shaikh Nadeem Shaikh

Induction machines play a important role in industry and there is a demand for their reliable and safe operation. Different failures occurs in induction machines gives excessive down times and generate large losses in term, and this motivates the condition monitoring of induction motors. The condition monitoring includes taking measurements on three phase induction motor when it is operating in...

2012
Adriaan Van Horenbeek Liliane Pintelon

Many industries identify condition monitoring as a major opportunity to reduce maintenance costs and increase equipment availability. This is also the case for the fast emerging offshore wind turbine technology. However, when considering offshore wind turbine farms, implementation of condition monitoring also introduces a significant capital investment cost. Moreover, condition monitoring syste...

In order to perform Preventive Maintenance (PM), two approaches have evolved in the literature. The traditional approach is based on the use of statistical and reliability analysis of equipment failure. Under statistical-reliability (S-R)-based PM, the objective of achieving the minimum total cost is pursued by establishing fixed PM intervals, which are statistically optimal, at which to replac...

2013
Tommi Kärkkäinen Pertti Silventoinen

Condition monitoring is currently widely used for industrial equipment to allow predictive maintenance of the equipment. For power electronic converters there currently is no generally accepted and widely deployed condition monitoring method. In this paper the authors investigate the benefits and desirability of condition monitoring.

In this paper, a single-product, single-machine system under Markovian deterioration of machine condition and demand uncertainty is studied.  The objective is to find the optimal intervals for inspection and preventive maintenance activities in a condition-based maintenance planning with discrete monitoring framework. At first, a stochastic dynamic programming model whose state variable is the ...

Morteza Jamshidian, Sayed Ali Mousavi

There are several strategies for maintenance and repairing of devices in industry. However, they are still confronted with many uncertainties. A hydraulic lifting device after ten years of working in a technical center in Isfahan is faced with uncertainty in terms of reliability. Being able to know the reliability of pieces means predicting failure occurrences, which is accomplished by conditio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - پژوهشکده انرژی 1388

چکیده هر چند امروزه بکارگیری فن آوری مراقبت وضعیت از طریق آنالیز روغن ، به عنوان روش موثری در تشخیص فرسایش های غیر عادی یا عیوب تجهیزات و سیستم های مکانیکی شناخته می شود ، باید توجه داشت که در فرایند تحلیل و تفسیر نتایج آنالیزروغن، مسائلی نظیر شناخته رفتارهای فرسایشی، ویژگی های فنی، سوابق و تجارب قبلی آنالیز وغیره، جهت اجرای برنامه cm ، بسیار ضروری و تعیین کننده است.در این تحقیق سعی شده است ...

2008
R. Willetts A. G. Starr A. Doyle J. Barnes

Maintenance actions cannot be defined and undertaken in isolation from the business and production objectives of a typical company. They must be predicted and subsequently planned into the production schedule. Condition monitoring identifies changes within defined monitoring parameters to trigger maintenance. These changes when combined with engineering knowledge, historical data and other moni...

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