{"id":1410,"date":"2025-09-22T07:15:00","date_gmt":"2025-09-22T04:15:00","guid":{"rendered":"https:\/\/www.kaanugrasiz.com\/tr\/?p=1410"},"modified":"2025-11-18T12:24:52","modified_gmt":"2025-11-18T09:24:52","slug":"six-sigma-araclari","status":"publish","type":"post","link":"https:\/\/www.kaanugrasiz.com\/tr\/six-sigma-araclari.html","title":{"rendered":"Yayg\u0131n \u015fekilde kullan\u0131lan Six Sigma ara\u00e7lar\u0131 ve y\u00f6ntemleri"},"content":{"rendered":"\n

SIPOC analizi<\/strong><\/h3>\n\n\n\n

Tedarik\u00e7iler, Girdiler, S\u00fcre\u00e7, \u00c7\u0131kt\u0131lar ve M\u00fc\u015fteriler<\/strong> kelimelerinin \u0130ngilizce kar\u015f\u0131l\u0131klar\u0131n\u0131n ba\u015f harflerinden olu\u015fan SIPOC diyagram\u0131, bir Six Sigma s\u00fcrecinin ba\u015f\u0131ndan sonuna kadar nas\u0131l i\u015flendi\u011fini g\u00f6steren basit ve g\u00fc\u00e7l\u00fc<\/strong> bir \u015femad\u0131r. <\/p>\n\n\n\n

Be\u015f ana s\u00fctunu olan bu yap\u0131, Six Sigma projesine ba\u015flamadan \u00f6nce s\u00fcrecin s\u0131n\u0131rlar\u0131n\u0131n ne oldu\u011funu netle\u015ftirir<\/strong>, s\u00fcrecin payda\u015flar\u0131n\u0131n kim oldu\u011funu<\/strong> belirler ve s\u00fcre\u00e7 boyunca, s\u00fcrece de\u011fer katan ve s\u00fcre\u00e7ten de\u011fer kaybettiren unsurlar\u0131n h\u0131zl\u0131 bir \u015fekilde g\u00f6r\u00fclmesini sa\u011flar.  Bu sayede s\u00fcreci y\u00f6neten ekip hangi girdilerin hangi \u00e7\u0131kt\u0131lara d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fcn\u00fc<\/strong> ve kimlerin bundan etkilendi\u011fini tek bak\u0131\u015fta anlar.<\/p>\n\n\n\n

CTQ A\u011fa\u00e7lar\u0131<\/strong><\/h3>\n\n\n\n

CTQ a\u011fac\u0131, m\u00fc\u015fterinin ihtiya\u00e7lar\u0131n\u0131n<\/strong> \u00f6l\u00e7\u00fclebilir kalite gereksinimlerine d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesinde kullan\u0131l\u0131r.<\/p>\n\n\n\n

A\u011fac\u0131n en \u00fcst\u00fcnde<\/strong> m\u00fc\u015fterinin beklentileri, orta k\u0131sm\u0131nda<\/strong> kritik kalite fakt\u00f6rleri ve en alt k\u0131sm\u0131nda<\/strong> ise bu fakt\u00f6rlerin nas\u0131l \u00f6l\u00e7\u00fclebilece\u011fine dair spesifik metrikler yer al\u0131r. CTQ y\u00f6ntemi, belirsizli\u011fini koruyan talepleri say\u0131sal hedeflere \u00e7evririr<\/strong> ve Six Sigma projesini y\u00f6neten ekip i\u00e7in net bir yol haritas\u0131 sa\u011flar. M\u00fc\u015fterinin ger\u00e7ekten ne istedi\u011fini teknik terimler kullanarak ifade etmeye yard\u0131mc\u0131 olur.<\/strong><\/p>\n\n\n\n

S\u00fcre\u00e7 ve de\u011fer ak\u0131\u015f\u0131 haritalama<\/strong><\/h3>\n\n\n\n

S\u00fcre\u00e7 haritalama, i\u015f ak\u0131\u015flar\u0131n\u0131n t\u00fcm ad\u0131mlar\u0131n\u0131n s\u0131ral\u0131 \u015fekilde g\u00f6sterilmesini ve g\u00f6rselle\u015ftirilmesini<\/strong> sa\u011flar. Proses haritalar\u0131, s\u00fcre\u00e7te meydana gelebilecek gecikmeleri, meydana gelebilecek darbo\u011fazlar\u0131, gerekli olmayan ad\u0131mlar\u0131 ya da tekrarlanan i\u015flerin ortaya \u00e7\u0131kar\u0131lmas\u0131 i\u00e7in<\/strong> ideal y\u00f6ntemdir. <\/p>\n\n\n\n

De\u011fer ak\u0131\u015f\u0131 haritalamas\u0131 ise \u00f6zellikle Lean Six Sigma uygulamalar\u0131nda yayg\u0131n \u015fekilde kullan\u0131l\u0131r ve m\u00fc\u015fterinin i\u015fine de\u011fer katan ve katmayan ad\u0131mlar\u0131 ayr\u0131 ayr\u0131 belirleyerek israf\u0131 azaltmay\u0131<\/strong> hedefler. Bu g\u00f6rselle\u015ftirme sayesinde, s\u00fcreci y\u00f6neten ekip iyile\u015ftirmek i\u00e7in \u00f6ncelik verilmesi gereken alanlar\u0131n hangileri oldu\u011funu daha kolay belirler ve buralara  y\u00f6nelir.<\/p>\n\n\n\n

Pareto Analizi, 5 Whys ve Fishbone (Ishikawa)<\/strong><\/h3>\n\n\n\n

Bu \u00fc\u00e7 ara\u00e7 k\u00f6k neden belirlemede birlikte kullan\u0131l\u0131r.<\/p>\n\n\n\n

Pareto analizi, sorunlar\u0131n %80\u2019inin \u00e7o\u011funlukla %20\u2019lik temel nedenlerden dolay\u0131 olu\u015ftu\u011funu ortaya koyan 80\/20 kural\u0131na dayan\u0131r<\/strong> ve hangi sorunlar\u0131n \u00e7\u00f6z\u00fclmesine \u00f6ncelik verilmesi gerekti\u011fini g\u00f6sterir.<\/p>\n\n\n\n

5 Whys (5 Neden) tekni\u011fi problemin temeline ula\u015fmak i\u00e7in \u201cNeden?\u201d sorusunu ard\u0131\u015f\u0131k be\u015f kez sormaya dayan\u0131r<\/strong>.<\/p>\n\n\n\n

Fishbone (Ishikawa) diyagram\u0131 potansiyel nedenleri ekipman, y\u00f6ntem, malzeme, insan, \u00e7evre gibi kategorilere ay\u0131rarak g\u00f6rsel bir bal\u0131k k\u0131l\u00e7\u0131\u011f\u0131 \u015fekliyle sunar<\/strong>.<\/p>\n\n\n\n

Bu \u00fc\u00e7 y\u00f6ntemin kombinasyonu karma\u015f\u0131k problemlerin derinliklerine inmek i\u00e7in ihtiya\u00e7 duyulan g\u00fc\u00e7l\u00fc bir \u00e7er\u00e7eveyi olu\u015fturur.<\/p>\n\n\n\n

FMEA analizi<\/strong><\/h3>\n\n\n\n

“Failure Mode and Effects Analysis” tan\u0131m\u0131n\u0131n ba\u015fharflerinin k\u0131saltmas\u0131 olan bu analiz, bir Six Sigma s\u00fcrecinde \u00fcr\u00fcnde veya hizmette nerede hangi hatalar\u0131n nas\u0131l ger\u00e7ekle\u015febilece\u011fini sistematik bi\u00e7imde analiz etmek<\/strong> i\u00e7in geli\u015ftirilmi\u015ftir.<\/p>\n\n\n\n

Her potansiyel hata noktas\u0131 i\u00e7in olas\u0131l\u0131k, \u015fiddet ve tespit edilebilirlik puanlar\u0131 verilerek risk \u00f6ncelik say\u0131s\u0131 (RPN) hesaplan\u0131r. Belirlenen bu skor hangi hatalar\u0131n daha \u00f6nce ele al\u0131nmas\u0131 gerekti\u011fini g\u00f6sterir. \u00d6zellikle sa\u011fl\u0131k, havac\u0131l\u0131k ve otomotiv gibi hata maliyetinin y\u00fcksek oldu\u011fu sekt\u00f6rlerde FMEA analizi s\u0131kl\u0131kla kullan\u0131l\u0131r.<\/p>\n\n\n\n

Kontrol Grafikleri, Hipotez Testleri ve Regresyon Analizleri<\/strong><\/h3>\n\n\n\n