Analysis of Failure Rate Components in Production System by Applying Fuzzy Expert System and Presenting a Fuzzy Model for Failure Rate in Production System

2021 ◽  
Author(s):  
Mehdi mahboob kheirkhah ◽  
pouria farajian
2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Ismail Hossain ◽  
Imtiaz Ahmed Choudhury ◽  
Azuddin Bin Mamat ◽  
Abdus Shahid ◽  
Ayub Nabi Khan ◽  
...  

The main objective of this research is to predict the mechanical properties of viscose/lycra plain knitted fabrics by using fuzzy expert system. In this study, a fuzzy prediction model has been built based on knitting stitch length, yarn count, and yarn tenacity as input variables and fabric mechanical properties specially bursting strength as an output variable. The factors affecting the bursting strength of viscose knitted fabrics are very nonlinear. Hence, it is very challenging for scientists and engineers to create an exact model efficiently by mathematical or statistical model. Alternatively, developing a prediction model via ANN and ANFIS techniques is also difficult and time consuming process due to a large volume of trial data. In this context, fuzzy expert system (FES) is the promising modeling tool in a quality modeling as FES can map effectively in nonlinear domain with minimum experimental data. The model derived in the present study has been validated by experimental data. The mean absolute error and coefficient of determination between the actual bursting strength and that predicted by the fuzzy model were found to be 2.60% and 0.961, respectively. The results showed that the developed fuzzy model can be applied effectively for the prediction of fabric mechanical properties.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Meysam Azimian ◽  
Mahdi Karbasian ◽  
Karim Atashgar ◽  
Golam Kabir

PurposeThis paper addresses special reliability-centered maintenance (RCM) strategies for one-shot devices by providing fuzzy inferences system with the assumption that, to data, there is no data available on their maintenance. As far as one-shot devices are concerned, the relevant data is inadequate.Design/methodology/approachIn this paper, a fuzzy expert system is proposed to effectively select RCM strategies for one-shot devices. In this research: (1) a human expert team is provided, (2) spatial RCM strategies for one-shot devices and parameters bearing upon those strategies are determined, (3) the verbal variables of the expert team are transformed into fuzzy sets, (4) the relationship between parameters and strategies are designed whereupon a model is developed by MATLAB software, (5) Finally, the model is applied to a real-life one-shot system.FindingsThe finding of this study indicates that the proposed fuzzy expert system can determine the parameters affecting the choice of the appropriate one-shot RCM strategies, and a fuzzy inference system can help for effective decision making.Originality/valueThe developed model can be used as a fast and reliable method for determining an appropriate one-shot RCM strategy, whose results can be relied upon with a suitable approximation in respect of the behavior test. To the best authors’ knowledge, this problem is not addressed yet.


2001 ◽  
Vol 06 (02) ◽  
Author(s):  
C.A Magni ◽  
G. Mastroleo ◽  
G. Facchinetti

1992 ◽  
Vol 57 (10) ◽  
pp. 2125-2134 ◽  
Author(s):  
Petr Stehlík ◽  
František Babinec

An application of a fuzzy expert system intended for estimating some parameters of steam reforming can also be one of the examples of an ever increasing utilization of expert systems in practice. The present contribution deals with the method making use of a verified mathematical model for simulating thermal chemical processes in reforming furnace radiation chamber in order to create knowledge base. This base includes linguistic values of selected independent and dependent variable quantities. Examples given illustrate an evaluation of dependent variable quantities (methane conversion into carbon dioxide and monoxide, reaction tube service life) by means of the said expert system based on queries.


Author(s):  
O. A. Omorodion ◽  
J. A. Ikimi ◽  
A. Nwaezeapu ◽  
O. A. Peace ◽  
K. H. Esiri ◽  
...  

Author(s):  
Laurentinus ◽  
Kiswanto ◽  
Rahmat Sulaiman ◽  
Fransiskus Panca Juniawan ◽  
Dwi Yuny Sylfania ◽  
...  

1997 ◽  
Vol 33 (22) ◽  
pp. 1859 ◽  
Author(s):  
H.Y. Kim ◽  
F.A.M. Cipparrone ◽  
M.T.C. Andrade

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