A Matrix FMEA Analysis of Variable Delivery Vane Pumps

Fabiś-Domagała, Joanna; Domagała, Mariusz; Momeni, Hassan

doi:10.3390/en14061741

Cited by 17 publications

(14 citation statements)

References 32 publications

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“…An incorrectly identified cause may in fact only be a manifestation of the root cause [29]. By analyzing the results obtained by individual analyses, the root cause can be determined [30][31][32]. In this research, based on the activities described, it was possible to propose measures to improve the hot rolling process.…”

Section: Discussionmentioning

confidence: 99%

Improving Quality in the Process of Hot Rolling of Steel Sheets

2021

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The hot rolling of steel sheets is a highly energy-intensive process. There are technical and operational issues associated with this process, and the causes of these issues can be various. This study involved analysis of one issue that has a great influence on the resulting surface quality of rolled sheet metal: rolled foreign material. After the sheet cools, rolled foreign material tends to fall off and a hole then remain on the surface of the sheet. This paper focuses on the search for the root causes of the occurrence of foreign material rolling. The basic categorization of the causes of this issue was performed by experienced long-term operators. The 4M method (man, machine, method, and material) was used to categorize the causes. Pairwise comparison was used to verify the result. Using energy dispersive spectroscopy analysis, the origin of the foreign material was identified. The analysis confirmed that the foreign material was not derived from the primary material. Further research showed that the cause of the issue was the guide rulers, which are a structural part of the rolling mill. Measures were taken to significantly reduce the incidence of the problem, which also had the effect of reducing financial losses, which fell by a third in 18 weeks. In the future, it will be necessary to make design changes (modernization of the rolling mill), which will, however, require more financial investment.

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Section: Discussionmentioning

confidence: 99%

Improving Quality in the Process of Hot Rolling of Steel Sheets

2021

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“…Failure Modes and Effects Analysis (FMEA) is a structured approach used to identify, analyze, and take the required measures to prevent issues related to the functionality of a product or process. The final goal is to yield a set of design, maintenance, or working conditions which would decrease the occurrence probability of unwanted events that would deter the device or process from the normal working way [ 51 ]. Ideally, FMEA should be performed during the design stage (as it is the case with the MNID), but even if applied on existing products or procedures, it will prove its benefits.…”

Section: Methodsmentioning

confidence: 99%

Risk Assessment-Oriented Design of a Needle Insertion Robotic System for Non-Resectable Liver Tumors

et al. 2022

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Medical robotics is a highly challenging and rewarding field of research, especially in the development of minimally invasive solutions for the treatment of the worldwide leading cause of death, cancer. The aim of the paper is to provide a design methodology for the development of a safe and efficient medical robotic system for the minimally invasive, percutaneous, targeted treatment of hepatocellular carcinoma, which can be extended with minimal modification for other types of abdominal cancers. Using as input a set of general medical requirements to comply with currently applicable standards, and a set of identified hazards and failure modes, specific methods, such as the Analytical Hierarchy Prioritization, Risk Analysis and fuzzy logic Failure Modes and Effect Analysis have been used within a stepwise approach to help in the development of a medical device targeting the insertion of multiple needles in brachytherapy procedures. The developed medical device, which is visually guided using CT scanning, has been tested for validation in a medical environment using a human-size ballistic gel liver, with promising results. These prove that the robotic system can be used for the proposed medical task, while the modular approach increases the chances of acceptance.

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“…It can be safety or ability to perform the specific function. We assumed that components are valued in the way similar to that which was presented in our previous study [31]:…”

Section: Methodsmentioning

confidence: 99%

A Concept of Risk Prioritization in FMEA Analysis for Fluid Power Systems

2021

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FMEA analysis is a tool of quality improvement that has been widely used for decades. Its classical version prioritizes risk of failure by risk priority number (RPN). The RPN is a product of severity (S), occurrence (O), and detection (D), where all of the factors have equal levels of significance. This assumption is one of the most commonly criticized drawbacks, as it has given unreasonable results for real-world applications. The RPN can produce equal values for combinations of risk factors with different risk implications. Another issue is that of the uncertainties and subjectivities of information employed in FMEA analysis that may arise from lack of knowledge, experience, and employed linguistic terms. Many alternatives of risk assessment methods have been proposed to overcome the weaknesses of classical FMEA risk management in which we can distinguish methods of modification of RPN numbers of employing new tools. In this study, we propose a modification of the traditional RPN number. The main difference is that severity and occurrence are valued based on subfactors. The detection number remained unchanged. Additionally, the proposed method prioritizes risk in terms of implied risk to the systems by implementing functional failures (effects of potential failures). A typical fluid power system was used to illustrate the application of this method. The method showed the correct failure classification, which meets the industrial experience and other research results of failures of fluid power systems.

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A Matrix FMEA Analysis of Variable Delivery Vane Pumps

Cited by 17 publications

References 32 publications

Improving Quality in the Process of Hot Rolling of Steel Sheets

Improving Quality in the Process of Hot Rolling of Steel Sheets

Risk Assessment-Oriented Design of a Needle Insertion Robotic System for Non-Resectable Liver Tumors

A Concept of Risk Prioritization in FMEA Analysis for Fluid Power Systems

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