A novel failure mode effect and criticality analysis (FMECA) using fuzzy rule-based method: A case study of industrial centrifugal pump

2021 ◽  
Vol 123 ◽  
pp. 105305
Author(s):  
Gajanand Gupta ◽  
Hamed Ghasemian ◽  
Ayub Ahmed Janvekar
2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Shah Nazir ◽  
Sara Shahzad ◽  
Sher Afzal Khan ◽  
Norma Binti Alias ◽  
Sajid Anwar

Software birthmark is a unique quality of software to detect software theft. Comparing birthmarks of software can tell us whether a program or software is a copy of another. Software theft and piracy are rapidly increasing problems of copying, stealing, and misusing the software without proper permission, as mentioned in the desired license agreement. The estimation of birthmark can play a key role in understanding the effectiveness of a birthmark. In this paper, a new technique is presented to evaluate and estimate software birthmark based on the two most sought-after properties of birthmarks, that is, credibility and resilience. For this purpose, the concept of soft computing such as probabilistic and fuzzy computing has been taken into account and fuzzy logic is used to estimate properties of birthmark. The proposed fuzzy rule based technique is validated through a case study and the results show that the technique is successful in assessing the specified properties of the birthmark, its resilience and credibility. This, in turn, shows how much effort will be required to detect the originality of the software based on its birthmark.


Author(s):  
Ashu S. Kedia ◽  
D. Sowjanya ◽  
P. S. Salini ◽  
M. Jabeena ◽  
Bhimaji Krishnaji Katti

2012 ◽  
Vol 66 (8) ◽  
pp. 1766-1773 ◽  
Author(s):  
J. Yazdi ◽  
S. A. A. S. Neyshabouri

Population growth and urbanization in the last decades have increased the vulnerability of properties and societies in flood-prone areas. Vulnerability analysis is one of the main factors used to determine the necessary measures of flood risk reduction in floodplains. At present, the vulnerability of natural disasters is analyzed by defining the various physical and social indices. This study presents a model based on a fuzzy rule-based system to address various ambiguities and uncertainties from natural variability, and human knowledge and preferences in vulnerability analysis. The proposed method is applied for a small watershed as a case study and the obtained results are compared with one of the index approaches. Both approaches present the same ranking for the sub-basin's vulnerability in the watershed. Finally, using the scores of vulnerability in different sub-basins, a vulnerability map of the watershed is presented.


Revista GESTO ◽  
2014 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Mairo Luiz Madalozzo Vencato ◽  
Augusto José Pinto Souto

<span style="font-family: Times New Roman; font-size: small;"> </span><p style="margin: 0cm 0cm 0pt; line-height: normal; text-indent: 0cm;" class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt;">Este artigo envolve o tema sobre a classificação e qualidade da matéria-prima couro na empresa Gobba Leather Indústria e Comércio Ltda. Os objetivos são analisar o processo interno de classificação e as medições da qualidade como ocorrem na empresa. Justifica-se este escrito pela relevância econômica e social da empresa, no seu ramo de atuação desde 1915, sendo esta empresa fortemente influenciadora do Produto Interno Bruto do município de Nova Esperança do Sul, no Vale do Jaguari - RS, além dos produtos da empresa serem exportados para os cinco continentes do mundo. O problema de pesquisa visa verificar como se procede na classificação da matéria-prima couro e como são os controles de qualidade da empresa? A metodologia adotada apresenta características quali-quantitativa, de abordagem exploratória descritiva. Sendo um levantamento bibliográfico com pesquisa documental e na forma de estudo de caso. Formulou-se um questionário estruturado com respostas nas escalas de sensibilidade e aplicados na população de vinte colaboradores ligados diretamente ao processo operacional. Conclui-se que a empresa trabalha satisfatóriamente em relação à classificação e qualidade da matéria-prima couro. Como aperfeiçoamento sugere-se melhorias na forma parcial de plano de ação, entre elas, sugere-se o uso da ferramenta FMECA (Failure Mode, Effect and Criticality Analysis), os conceitos de classificação de Perfetti (2004) e monitoramento das imperfeições no couro de Georgieva <em style="mso-bidi-font-style: normal;">et. al.</em>(2004), reduzindo às perdas na matéria-prima.</span></p><span style="font-family: Times New Roman; font-size: small;"> </span>


2019 ◽  
Vol 270 ◽  
pp. 04015
Author(s):  
Edy Anto Soentoro ◽  
Nina Pebriana

Reservoir operations, especially those which regulate the outflow (release) volume, are crucial for the fulfillment of the purpose to build the reservoir. To get the best results, outflow (release) discharges need to be optimized to meet the objectives of the reservoir operation. A fuzzy rule-based model was used in this study because it can deal with uncertainty constraints and objects without clear or well-defined boundaries. The objective of this study is to determine the maximum total release volume based on water availability (i.e., a monthly release is equal to or more than monthly demand). The case study is located at Darma reservoir. A fuzzy rule-based model was used to optimize the monthly release volume, and the result was compared with that of NLP and the demand. The Sugeno fuzzy method was used to generate fuzzy rules from a given input-output data set that consisted of demand, inflow, storage, and release. The results of this study showed that the release of Sugeno method and the demand have the same basic pattern, in which the release fulfill the demand. The overall result showed that the fuzzy rule-based model with Sugeno method can be used for optimization based on real-life experiences from experts that are used to working in the field.


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