engleski

Improvement of product reliability during the production process in the automotive industry using improved FMEA analysis

Product reliability plays the most important role during the car purchase by customers. In order to satisfy customers need it is necessary to product be reliable during the product life cycle. One of the important phases of the product life cycle is production process phase. In order to assure product reliability in automotive industry Failure Mode and Effect Analysis (FMEA) is used. FMEA for product reliability during the production process proposed by automotive industry standard (IATF 16949) is process FMEA (PFMEA). This analysis is in use in automotive industry for a few decades, but still contains certain number of shortcomings. Three groups of PFMEA shortcomings are identified: Shortcomings related to human factor, risk estimation and evaluation shortcomings and procedural (structural) shortcomings. In order to overcome procedural shortcomings, study of integration of lean approach into PFMEA is proposed. This research is supported by case study conducted in one company for producing electronics and cables for automotive industry. In order to improve risk estimation and evaluation process, integration of safety and financial risk into severity index is proposed. Solving of this problem is achieved by invention of new specialized tables for safety severity risk and cost severity risk. New involved risks (with existing) are weighted by application of fuzzy AHP methodology supported with Order Weighted Aggregation (OWA) method in order to achieve more precise results much easier. Testifying of applied methodology is done by case study in automotive company for producing leather upholstery for automobiles. Proposed improvements improved significantly product reliability during the production process, as well as FMEA analysis itself. Problem is that these improvements increased complexity and time-consumingness of PFMEA. In order to overcome this new problem, comprehensive software solution which contains proposed improvements and comprehensive database, is proposed.

Reliability, Failure Mode and Effect Analysis (FMEA), Process Failiure Mode and Effect Analysis (PFMEA), Automotive industry, Production process, Lean approach, Fuzzy AHP

Kandidat Nikola Banduka je predao doktorsku disertaciju. Fakultetsko vijeće FESB-a na sjednici održanoj 13.06.2018. prihvatilo je izvješće mentora i donijelo je odluku o imenovanju Povjerenstva za obranu doktorskog rada Nikole Banduke. Nikola Banduka je doktorand s Univerziteta u Kragujevcu i proveo je tri godine na doktorskom studiju na FESB-u preko ERASMUS-a. Obrana se planira krajem rujna 2018. god.