A Failure Mode Assessment Model Based on Neutrosophic Logic for Switched-Mode Power Supply Risk Analysis

Abstract

Reducing the potential risks in the manufacturing process to improve the reliability of the switched-mode power supply (SMPS) is a critical issue for the users’ safety. This paper proposes a novel failure mode and effects analysis (FMEA) model based on hybrid multiple criteria decision-making (MCDM), which adopts neutrosophic set theory into the proposed model. A developed neutrosophic Best Worst method (NBWM) is used to evaluate the weights of risk factors and determine their importance. Secondly, the neutrosophic Weight Aggregated Sum Product Assessments (NWASPAS) method is utilized to calculate the Risk Priority Number (RPN) of the failure modes. The proposed model improves the shortcomings of traditional FMEA and improves the practical applicability and effectiveness of the Best Worst method (BWM) and Weight Aggregated Sum Product Assessments (WASPAS) methods. In addition, this study uses neutrosophic logic to reflect the true judgments of experts in the assessment, which considers authenticity, deviation, and uncertainty to obtain more reliable information. Finally, an empirical case study from an SMPS company headquartered in Taiwan demonstrates the effectiveness and robustness of the proposed model. In addition, by comparing with two other FMEA models, the results show that the proposed model can more clearly reflect the true and effective risks in the assessment. The results can effectively help power supply manufacturers to assess risk factors and determine key failure modes.

Analysis and Consequences on Some Aggregation Functions of PRISM (Partial Risk Map) Risk Assessment Method

“…Although many criticisms expressed that different combinations of o, s, and d can result in the same RPN while the hidden risk content behind the RPN is different [21][22][23][24][25]47,50,51], the PRISM method solves this problem, since it describes hidden risks with different aggregation functions and visualizes hidden risks via the PRISM pattern. On the other hand, realizing more potentials for the methodology, one development direction can be of the future of applying MCDM methods such as AHP [1,52] or ANP [32] or multilevel methods such as TREF [53] for solving the possible subjective ranking issues of the evaluators.…”

“…One of the most criticized properties of the RPN is that some hidden or latent risks can be unestimated or misestimated because different combinations of the three factors can result in the same RPN [13,[21][22][23][24][25]. Thus, these hidden risks can later lead to unexpected errors.…”

“…Despite structured criticisms [22,23,[26][27][28][29], the method is used quite frequently in the latest publications as well without modifications applied to it. As for example, an application is given for the classical failure mode and effects analysis in the context of smart grid cyber-physical systems [30].…”

PFDA-FMEA, an Integrated Method Improving FMEA Assessment in Product Design

“…The authors based their proposed method on the FMEA method and used SWARA to calculate the weights of the risk factors, proposing a new adaptation of the FMEA process. In addition, in recent works, we found a fusion between neutrosophic logic and best worst method to improve Failure Mode and Effects Analysis (FMEA) [22]. In recent investigations, classical FMEA is still used to solve problems in the industry [23].…”

Implementasi metode Failure Mode and Effect Analysis pada Industri di Asia – Kajian Literature

“…Saat penerapan alat FMEA pada sektor industri, sering diintegrasikan dengan berbagai macam metode pemecahan masalah guna mendapatkan prioritas perbaikan seperti Fuzzy [7] [11] [14] [18] [20], Job Safety Analysis [23], Hazop [6], Fault Tree Analysis [14], Analytical Hierarchy Process [31], DEMATEL [29], Metode Kano [2] dan Mode Assessment Model [4] Makalah ini juga mengidentifikasi sebaran publikasi implementasi FMEA di berbagai sektor industri di kawasan Asia berdasarkan wilayah yang teridentifikasi (Gambar 4). Makalah ini, Indonesia merupakan pemasok terbesar jumlah publikasi dengan 10 artikel diikuti Taiwan 5 artikel, Iran 4 artikel, China 3 artikel, Malaysia dan Turki masing-masing 2 artikel dan Thailand 1 artikel Gambar 4.…”