پیش بینی و تحلیل حالات خرابی و شکست با استفاده از اعداد راف و روش طرحریزی رابطه خاکستری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، گروه مهندسی صنایع، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران

2 دانشجوی کارشناسی ارشد، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران

چکیده

یکی از ابزارهای پرکاربرد برای شناسایی و اولویت بندی ریسک های موجود در محیط های صنعتی، تولیدی و خدماتی تکنیک تجزیه و تحلیل حالت های شکست و آثار آن FMEA است. FMEA سنتی کاستی های بسیاری دارد. از این رو پژوهش های بسیاری در راستای افزایش عملکرد FMEA انجام شده است. در این پژوهش برای مقابله با کمبود های FMEA سنتی، روش جدیدی برای بیان اطلاعات مبهم و ذهنی از اعداد راف و یک روش توسعه یافته تحلیل رابطه خاکستری ( GRA) با عنوان روش طرحریزی رابطه خاکستری (GRP) برای اولویت بندی حالت های بالقوه شکست استفاده شده است. در روش پیشنهادی ارزیابی فاکتورهای ریسک توسط اعضای تیم FMEA به وسیله اعداد راف مدلسازی شده است و سپس روش GRP اولویت های حالات شکست را تعیین می کند. برای نشان دادن کارکرد روش پیشنهادی، یک مثال برای رتبه بندی حالت های شکست، بررسی و مقایسه مدل پیشنهادی استفاده شده است. رویکرد جدید با در نظر گرفتن وزن فاکتورهای ریسک و استفاده از یک روش اولویت بندی با استفاده از روشGRP ، بر کاستی های روش FMEA سنتی مثل ضرب فاکتورهای ریسک و مقادیر ناپیوسته حاصل از آن و بی توجهی به وزن فاکتورهای ریسک غلبه کرده است. روش پیشنهادی با پوشش دادن ابهام و عدم قطعیت در قضاوت های متخصصان به اولویت بندی ریسک موثرتر و دقیق تری دست می یابد. نتایج نشان می دهد که یک رتبه بندی معقول تر و دقیق تری توسط ترکیب اعداد راف و روش GRP برای FMEA در مقایسه باFMEA سنتی حاصل شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Failure Mode and Effects Analysis Using Rough Set Theory and Grey Relational Projection Method

نویسندگان [English]

  • Alireza Shahraki 1
  • Zohreh Tahmasbi Abdar 2
1 Shahid Nikbakht Engineering, University of Sistan and Baluchestan, Zahedan, Iran.
2 Masters student, Faculty of Shahid Nikbakht Engineering, University of Sistan And Baluchestan, Zahedan, Iran
چکیده [English]

Failure modes and effects analysis technique (FMEA) is One of the high usage tool to identify and prioritization of risks in the industrial, production and service environments. traditional FMEA has many shortcomings, Therefore many researches have been done to enhance the performance of FMEA. Also, in this study, a new approach has been proposed to deal with shortcomings of traditional FMEA. In this new approach Rough numbers have been used for representation of vague and subjective information and an improved method of gray relational analysis (GRA) as the Gray relational projection method (GRP) to prioritize potential failure modes. In the proposed method, evaluation of risk factors by members of the FMEA team has been modeled by Rough numbers and then The GRP method determines the priority of failure modes. To illustrate the performance of the proposed method, an example is used for the ranking of failure modes and evaluating and comparing the proposed model. The new approche have been overcame the shortcomings of traditional FMEA like multiplication of risk factors and the resulted discontinuous amounts and inattention to the weight of risk factors, by considering the weight of risk factors and using a method of prioritization by using GRP method. The proposed approach is achieved more affective and more accurate prioritization by covering ambiguity and uncertainty in experts’ judgements. The results indicates that in comparison with the traditional FMEA, a more reasonable and more accurate ranking have been resulted for FMEA method by combination of Rough numbers and GRP method.

کلیدواژه‌ها [English]

  • Risk Evaluation
  • Failure Mode and Effects Analysis
  • Rough Set Theory
  • Grey Relational Projection Method

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پژوهش های نوین در تصمیم گیری
دوره 4، شماره 2
شهریور 1398
صفحه 1-35

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