Determining process capability ındices for shirting fabric
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Date
2016
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Çukurova Üniversitesi
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info:eu-repo/semantics/openAccess
Abstract
Şirketler düzenli üretim yapabilmek için ürettikleri ürünlerin spesifikasyon limitleri dahilinde üretilmesini arzu ederler. Proses yeterlilik indeksleri Cp (proses potansiyel indeksi) ve Cpk (proses yeterlilik indeksi) yeterlilik ölçümleri için kullanılır. Bu çalışmada, Türkiye’de gömleklik kumaşlar üreten bir tekstil fabrikasında proses yeterlilik analizi ve proses yeterlilik indeksleri tartışılmıştır. Bu fabrikada, fire kumaş miktarının üretim yöneticisi tarafından belirlenen üst sınırı aşmaması arzu edilmektedir. Eğer fire kumaş miktarı artarsa, memnun olmayan müşteri sayısında da artış olacaktır. Ve bu durum, fabrika için artan maliyete ve azalan rekabet gücüne sebep olacaktır. Bu sebeple, bu tekstil fabrikası için Cp ve Cpk indeksleri hesaplanmıştır. Çalışmanın sonucunda, incelenen tekstil fabrikasında prosesin yetersiz olduğu ve fire kumaş miktarının azaltılması için bazı önlemlerin alınması gerektiği görülmüştür. Ayrıca, fire kumaşa sebep olan kumaş hataları ve sürecin yetersizliği sebepleri de araştırılmıştır.
Organizations use process capability analysis to produce their products within specification limits for regular manufacturing. Process capability indices, Cp (process potential indices) and Cpk (process capability indices), are used as capability measures. In this study, process capability analysis and process capability indices are discussed in the context of a textile factory that produces shirting fabrics in Turkey. In this factory, it is desired that the amount of wastage fabric does not exceed the upper limit that identified from production manager. If the amount of wastage fabric increases, the number of unsatisfied customers will also increase. And, this situation is caused increasing cost and decreasing competitiveness for factory. For these reasons, Cp and Cpk indices were calculated for the textile factory. As a consequence of this study, we discovered that the process was inadequate precautions must be undertaken to decrease the amount of wastage fabric. Furthermore, the fabric faults which cause wastage fabric and the reasons for the process’ inadequacies were also investigated.
Organizations use process capability analysis to produce their products within specification limits for regular manufacturing. Process capability indices, Cp (process potential indices) and Cpk (process capability indices), are used as capability measures. In this study, process capability analysis and process capability indices are discussed in the context of a textile factory that produces shirting fabrics in Turkey. In this factory, it is desired that the amount of wastage fabric does not exceed the upper limit that identified from production manager. If the amount of wastage fabric increases, the number of unsatisfied customers will also increase. And, this situation is caused increasing cost and decreasing competitiveness for factory. For these reasons, Cp and Cpk indices were calculated for the textile factory. As a consequence of this study, we discovered that the process was inadequate precautions must be undertaken to decrease the amount of wastage fabric. Furthermore, the fabric faults which cause wastage fabric and the reasons for the process’ inadequacies were also investigated.
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Keywords
Process Capability Analysis, Process Capability İndices, Textile, Fabric Faults, Case Study, Proses Yeterlilik Analizi, Proses Yeterlilik İndeksleri, Tekstil, Kumaş Hataları, Örnek Olay Çalışması
Journal or Series
Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi
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Volume
31
Issue
106
