نتایج جستجو برای: failure of equipment

تعداد نتایج: 21202573  

2010
Len Losik

Current failure analysis practices use diagnostic technology developed over the past 100 years of designing and manufacturing electrical and mechanical equipment to identify root cause of equipment failure requiring expertise with the equipment under analysis. If the equipment that failed had telemetry embedded, prognostic algorithms can be used to identify the deterministic behavior in complet...

2012
Malay Niraj Praveen Kumar

Malay Niraj, Praveen Kumar, Dr. A.Mishra Abstract -Present study is an approach for f inding the suitable maintenance practice and frequency of maintenance with the help of criticality factor of equipment it is based on failure mode evaluation and criticality analysis. Criticality means the failure probability of the equipment is very high. The miner failure of critical equipment may leads to s...

2015
Jia-Min Ren Chuang-Hua Chueh H. T. Kung

A sudden failure of a critical component in light-emitting diode (LED) manufacturing equipment would result in unscheduled downtime, leading to a possibly significant loss in productivity for the manufacturer. It is therefore important to be able to predict upcoming failures. A major obstacle to failure prediction is the limited amount of equipment lifecycle data available for training, as equi...

Journal: :Quality and Reliability Engineering International 2018

Ali Salmasnia, Ebrahim Ghasemi, Hadi Mokhtari,

This study aims to select optimal maintenance strategy for components of an electric motor of the National Iranian Oil Refining and Distribution Company. In this regard, a method based on revised multi choice goal programming and analytic hierarchy process (AHP) is presented. Since improving the equipment reliability is an important issue, reliability centered maintenance (RCM) strategies are i...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

A Bakhsha H Babaei K Shahanaghi

In this paper, we focus on a continuously deteriorating critical equipment which its failure cannot be measured by cost criterion. For these types of systems like military systems, nuclear systems, etc it is extremely important to avoid failure during the actual operation of the system. In this paper we propose an approach which constrains failure probability to a pre-specified value. This valu...

Journal: :journal of dental research, dental clinics, dental prospects 0
farzaneh kaviani masume johari farzad esmaeili

background and aim. knowledge of the common radiographic errors and their prevention could prevent imposing redundant radiation, time and money to patient and the dentist. the aim of this study was to assess the common radiographic errors on panoramic radiographs in a radiology department. materials and methods. 250 panoramic radiographs (100 male and 150 female; mean age, 24.3) taken at the de...

Journal: :international journal of industrial engineering and productional research- 0
kamran shahanaghi hamid babaei arash bakhsha

in this paper we focus on a continuously deteriorating two units series equipment which its failure can not be measured by cost criterion. for these types of systems avoiding failure during the actual operation of the system is extremely important. in this paper we determine inspection periods and maintenance policy in such a way that failure probability is limited to a pre-specified value and ...

2003
Yong Jiang Zhong Zhang James D. McCalley Tim Van Voorhis

This paper describes a new maintenance selection and scheduling approach for bulk transmission equipment that is based on the cumulative long-term risk caused by failure of each piece of equipment. This approach not only accounts for equipment failure probability and equipment damage, as do reliability centered maintenance (RCM) approaches, but it also accounts for the outage consequence in ter...

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