<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Fault Tree Analysis (FTA) is a method that directly focuses on the modes of failures. The FTA is a graphical representation of the major faults or critical failures associated with a product, as well as the causes for the faults and potential countermeasures. The aim of this research paper is to calculate the probability of the top event – the failure of the process using FTA and propose a technique to prioritize factors for action design and reduce the likelihood of a top event failure based on manufacturers' requirements. We have constructed a qualitative fault tree to produce office components packed and sealed in blister packs using a KOCH KBS-PL machine. We defined the top event G – the production of office components, packed and sealed in blister packs on the machinery KOCH KBS-PL. Then we defined events leading to top events down to individual failure factors. Based on the links between the fault tree and the probability of failure, we performed a quantitative analysis to determine the probability of failure of individual events. We found out that the probability of failure of G is 5.04%. Subsequently, we identified which factors most significantly reduce the resulting probability of failure of factor G. These are the factors: E – feed rate, F – cooling, AL – incorrect setting and D – break. It has been proven that by controlling these 4 factors, we can reduce the probability of failure of top event G to 2.36%, provided that effective measures are taken. The final proposal meets the requirements of several manufacturers for a fast, efficient, and cost-effective solution. We have created a proposal that saves time, has minimal software and hardware requirements, and is easy to use. The efficiency and effectiveness of the proposal was that we identified the weakest points in the fault tree that most significantly cause the top event to fail. This prioritized the factors for the design of the measures.</p>
</abstract>

Fault Tree Analysis (FTA) is a method that directly focuses on the modes of failures. The FTA is a graphical representation of the major faults or critical failures associated with a product, as well as the causes for the faults and potential countermeasures. The aim of this research paper is to calculate the probability of the top event – the failure of the process using FTA and propose a technique to prioritize factors for action design and reduce the likelihood of a top event failure based on manufacturers' requirements. We have constructed a qualitative fault tree to produce office components packed and sealed in blister packs using a KOCH KBS-PL machine. We defined the top event G – the production of office components, packed and sealed in blister packs on the machinery KOCH KBS-PL. Then we defined events leading to top events down to individual failure factors. Based on the links between the fault tree and the probability of failure, we performed a quantitative analysis to determine the probability of failure of individual events. We found out that the probability of failure of G is 5.04%. Subsequently, we identified which factors most significantly reduce the resulting probability of failure of factor G. These are the factors: E – feed rate, F – cooling, AL – incorrect setting and D – break. It has been proven that by controlling these 4 factors, we can reduce the probability of failure of top event G to 2.36%, provided that effective measures are taken. The final proposal meets the requirements of several manufacturers for a fast, efficient, and cost-effective solution. We have created a proposal that saves time, has minimal software and hardware requirements, and is easy to use. The efficiency and effectiveness of the proposal was that we identified the weakest points in the fault tree that most significantly cause the top event to fail. This prioritized the factors for the design of the measures.

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Slovak University of Agriculture in Nitra

Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuh Persiaran Tun Khalil Yaakob

Department of Transport, Faculty of Transport

Department of Production Engineering, Logistics and Applied Computer Science, Faculty of Production and Power Engineering

Agricultural Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

Fault Tree Analysis (FTA) is a method that directly focuses on the modes of failures. The FTA is a graphical representation of the major faults or critical...

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Pubblicato online: 28 ott 2023

Pagine: 255 - 272

Ricevuto: 01 mag 2023

Accettato: 01 set 2023

DOI: https://doi.org/10.2478/agriceng-2023-0019

Parole chiave
fault tree, fault probability, production technology, failure mode

© 2023 Marián Bujna et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Reducing the Probability of Failure in Manufacturing Equipment by Quantitative FTA Analysis

Pubblicato online: 28 ott 2023

Pagine: 255 - 272

Ricevuto: 01 mag 2023

Accettato: 01 set 2023

DOI: https://doi.org/10.2478/agriceng-2023-0019

Parole chiavefault tree, fault probability, production technology, failure mode

© 2023 Marián Bujna et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Parole chiave
fault tree, fault probability, production technology, failure mode