Matrix method for FMEA-analysis as a tool for promoting the quality of production

: pp. 80-84
Lviv Polytechnic National University
Lviv Polytechnic National University

The article describes the features and specifics of the method of FMEA analysis, based on the requirements of the current normative documents. The aim of the work is to develop and use the FMEA-analysis to predict the quality of products of machine-building enterprises, taking into account the entire technological cycle of production. The use of the matrix method for assessing the quality of products and services for forecasting the quality of products of machine-building production is proposed. Initially, the selected commission should collect all the necessary information for FMEA analysis and distribute its groups of related unit quality indicators. From obtained quality vectors is a quality matrix that describes: designing a product, preparing a production, performing technological processes, controlling the finished product, analyzing factors and environmental conditions. If each of the vectors of quality is formed in the form of a matrix-string, which changes during the implementation of the investigated stage of the established life cycle, then this way they receive information on the execution of each operation. Thus, it is possible to receive quantitative data on its flow on each of the listed stages. It is shown that in the general case, it is expedient for each element of the matrix-line of quality to use their representation in the form of the product of the weighting factor and the actual value of this unit value, which makes it possible to distinguish the most important single quality indices describing the most responsible operations and processes. The original approach for the formation of standard matrices of product quality is described, with the help of which it is possible to visually see the potential failures at each stage of the technological process of manufacture of machinebuilding products. This allows us to analyze the possibility of defects and their impact on the consumer’s opinion at all stages of the life cycle. For the formation of the reference matrix used in the FMEA analysis, an approach is used that takes into account the cause of each defect. During the work of the expert group, each criterion that affects the defect is evaluated in points from 1 to 10, where 1 is the criterion, almost no defects, and 10 – the criterion has a serious defect. It also indicates the weight of the defect, that is, its impact on the final quality of the product, as well as recommendations for the elimination of defects. The recommendations for using the matrix method of conducting FMEA-analysis in the practice of the machine-building enterprise are given.

[1] ISO/TS16949:2009. Quality management system - Particular requirements for the application of ISO9001:2008 for automotive production and relevant service part organization.
[2] STP 50.010-2013. Systema menedzhmenta kachestva. Metod analyza vydov y posledstvyi potentsyalnykh defektov (Metod FMEA).
[3] IES 60812:2006. Analysis techniques for system reliability - Procedure for failure mode and effects analysis (FMEA).
[4] D. Paniukov, A. Skrypachev. Ynzhenernye metody upravlenyia kachestvom. Analyz vydov, prychyn y posledstvyi potentsyalnykh defektov (FMEA). Toliatty, RF: THU, 2007.
[5] V. Vanko, P. Stoliarchuk, “Metod otsinky yakosti produktsii ta posluh za dopomohoiu teorii matryts”, Measuring Equipment and Metrology, no.67, p.108-114, 2007.
[6] FMEA-analysis of the types and consequences of potential failures, Kraisler Korp., Ford Motor Kompany, General Motors Corp., 2008.
[7] MIL-STD-1629A, Military standard: Procedures for performing a failure mode, effects, and critically analysis, Nov.24, 1980.
[8] Yu. Vashukov, A. Dmytryev, T. Mytroshkyna. Analyz vydov, posledstvyi y prychyn potentsyalnykh nesootvetstvyi (FMEA). Metod ukazanyia, Samara, RF: Hosudarstvennyi aerokosmycheskyi unyversytet, 2008.