On process capability analysis under fuzzy normal distribution

Author(s):  
Ihsan Kaya ◽  
Cengiz Kahraman
2020 ◽  
Vol 21 (2) ◽  
pp. 99-110
Author(s):  
Dewi Juliah Ratnaningsih ◽  
Liah Lestari

Public Service Mall (PSM) Grha Tiyasain Bogor City is one place that provides services to the public in terms of services. As a public service, Grha Tiyasa should measure whether the services offered to meet consumer expectations. The purpose of writing this paper is to analyze the capability of the process of issuing licensing services and consumer perceptions of services provided by PSMGrha Tiyasa. The process capability analysis criteria used are Pp and Ppk because the data is non-normal distribution. Analysis using Minitab 16.0. The results of the study show that the capability of the service process at the time of issuance of permits has a value of Pp = 1 and Ppk = 0.49. This value indicates that the process capability is excellent. The capability of the process of perception or assessment of consumers of services is quite good. This fact is indicated by the value of Pp = 5.52 and Ppk = 1.70. Mall Pelayanan Publik (MPP) Grha Tiyasadi Kota Bogor merupakan salah satu tempat yang memberikan pelayanan kepada masyarakat. Sebagai  pelayan publik, Grha Tiyasa harus mengukur apakah layanan yang ditawarkan memenuhi harapan konsumen. Tujuan penulisan makalah ini adalah untuk menganalisis kapabilitas proses pemberian layanan perizinan dan persepsi konsumen terhadap layanan yang diberikan oleh MPP Grha Tiyasa. Kriteria analisis kapabilitas proses yang digunakan adalah Pp dan Ppk karena data tidak berdistribusi normal. Analisis menggunakan Minitab 16.0. Hasil penelitian menunjukkan bahwa kapabilitas proses pelayanan pada saat izin diterbitkan memiliki nilai Pp = 1 dan Ppk = 0,49. Nilai ini menunjukkan bahwa kapabilitas proses sangat baik. Kemampuan proses persepsi atau penilaian konsumen terhadap jasa cukup baik. Fakta ini ditunjukkan dengan nilai Pp = 5,52 dan Ppk = 1,70.


2011 ◽  
Vol 314-316 ◽  
pp. 2443-2448
Author(s):  
Wen Hua Shi ◽  
Chun Liang Chen ◽  
Jin Tao Niu

Abstract: Formerly, the research to the assembly process of gear was commonly based on the normal assumption. However, in practice the clearance between gears in mesh does not necessarily obey normal distribution. Based on the mentioned above, the non-normal process capability analysis is fulfilled with the Box-Cox transformation and the data collected in the workshop. The corresponding result is compared with the directly obtained result, which validates the rationality and effectiveness.


2010 ◽  
Vol 3 (S1) ◽  
pp. 531-534
Author(s):  
Maja Rujnić-Sokele ◽  
Mladen Šercer ◽  
Damir Godec

Author(s):  
Stoyan Stoyanov ◽  
Ying Kit Tang ◽  
Chris Bailey ◽  
Robert Evans ◽  
Silvia Marson ◽  
...  

2021 ◽  
Vol 25 (8) ◽  
pp. 1477-1482
Author(s):  
O.F. Odeyinka ◽  
F.O. Ogunwolu ◽  
O.P. Popoola ◽  
T.O. Oyedokun

Process capability analysis combines statistical tools and control charts with good engineering judgment to interpret and analyze the data representing a process. This work analyzes the process capability of a polypropylene bag producing company. The case study organization uses two plants for production and data was collected over a period of nine months for this study. Analysis showed that the output spread of plant 1 was greater than the specification interval spread which implies poor capability. There are non-conforming parts below the Lower Specification Limit (LSL: 500,000 metres) and above the Upper Specification Limit (USL: 600,000 metres) and that the output requires improvement. Similarly, the capability analysis of plant 2 shows that the overall output spread is greater than the specification interval spread (poor capability). The output centre in the specification and overall interval are vertically aligned, thus specifying that the output from plant 2 is also process centered and requires improvement. Recommendations were made to improve the outputs from each production plant.


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