Çatı Matrisi Korelasyon Probleminin Çözümü İçin Kalite Fonksiyonları Göçeriminin Bulanık Bilişsel Haritalar İle Bütünleştirilmesi

Year 2022, , 117 - 138, 28.04.2022

Gül Emel , Gülcan Petriçli , Cem Kayguluoğlu

https://doi.org/10.21121/eab.787075

Cited By: 2

Abstract

Çatı matrisi, Kalite Fonksiyon Göçerimi yönteminin kalite evindeki mühendislik karakteristiklerinin (MK) kendi aralarındaki korelasyonlarını temsil etmektedir. Alan yazındaki bir çok çalışmada korelasyonlar nitel olarak ölçülmekte ve bu yüzden analizlerde göz ardı edilmektedir. Fakat korelasyonların dikkate alınmaması, gereksiz iyileştirmelere, ürün performansının düşmesine ve müşteri gereksinimlerinin (MG) karşılanamamasına neden olabilmektedir. Bu nedenle bu çalışma, çatı korelasyonlarının nicel olarak değerlendirilebilmesini sağlayan bir yaklaşım önermeyi amaçlamaktadır. Söz konusu amaç için Bulanık Bilişsel Haritalar (BBH) yöntemi kullanılmıştır. Ek olarak, MG'ler ve MK'ler arasındaki ilişkileri incelemek için Aksiyomatik Tasarım (AT) ve ilişkilerin değerlendirilmesinde tutarlılık kontrolü için Genişletilmiş Bulanık Analitik Hiyerarşi Süreci (GBAHS) kullanılmıştır. Önerilen yaklaşım, otomotiv sanayisinde faaliyet gösteren sac-metal kalıp üreten bir üretim işletmesinin kalıplar için genellenmiş MG'leri ve MK'lerinin önceliklendirilmesi problemine uygulanmıştır. Elde edilen sonuçlara göre BBH'ler, kantitatif çatı matrisinin pratik bir şekilde analiz edilmesini sağlayan etkili bir yöntemdir. Kare tipi çatı matrisi, BBH’lerin komşuluk matrisinin kullanımını desteklemekte ve MK’ler arasındaki asimetrik ilişkilerin başarı ile temsil edilmesini sağlamaktadır. Çalışmada ele alınan önceliklendirme probleminde korelasyonların analize dahil edilmesi ise nihai sıralamanın değişmesine neden olmuş ve ayrıca en yönetilebilir MK'lerin, tatmin edilebilmesi en olası olan MG'lerin ve en kritik/en az yönetilebilir MK'lerin belirlenmesine yardımcı olmuştur.

Keywords

Kalite Fonksiyonları Göçerimi, Bulanık Bilişsel Haritalar, Asimetrik Kare Çatı Matrisi, Bağımsızlık Aksiyomu, Genişletilmiş Bulanık Analitik Hiyerarşi Süreci

Integrating Quality Function Deployment with Fuzzy Cognitive Maps for Resolving Correlation Issues in the Roof Matrix

Abstract

The roof matrix represents correlations among engineering characteristics (EC) in the house of quality (HoQ) in Quality Functions Deployment (QFD). Correlations are usually measured qualitatively and omitted in the analysis. However, ignoring them may cause duplication of effort, decreased product performance, and unsatisfied customer requirements (CR). Hence, this paper intends to propose an approach to considering the correlations quantitatively. Fuzzy Cognitive Maps (FCM) were used for this purpose. Additionally, Axiomatic Design (AD), for examining relationships between CRs and ECs, and Fuzzy Analytic Hierarchy Process (FAHP) with the Extent Analysis (EA) were used for checking the consistency of the evaluations. The proposed approach was applied in a sheet metal die making company for ranking CRs and ECs. Results show that FCM enables analyzing the quantitative roof matrix practically. The square roof matrix that also supports FCM’s adjacency matrix structure successfully represents asymmetric relationships among ECs. Integrating the correlations into the analysis resulted in a change in the final ranking. It also helped to determine the most manageable ECs, better satisfiable CRs, and most critical/least manageable ECs.

Keywords

Quality Function Deployment, Fuzzy Cognitive Maps, Asymmetric Square Roof Matrix, Independence Axiom, Fuzzy Analytic Hierarchy Process, Extent Analysis

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