Process capability analysis for simple linear profiles

Aylin Pakzad (), Saeed Adibfar (), Hamideh Razavi () and Rassoul Noorossana ()
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Aylin Pakzad: Kosar University of Bojnord
Saeed Adibfar: Iran University of Science and Technology
Hamideh Razavi: Ferdowsi University of Mashhad
Rassoul Noorossana: Iran University of Science and Technology

Quality & Quantity: International Journal of Methodology, 2024, vol. 58, issue 3, No 10, 2183-2211

Abstract: Abstract When a process is under statistical control, one is usually interested in evaluating process performance based on specification limits (SLs) provided by customer. This evaluation is referred to as process capability analysis. This study provides a new method to measure process capability index (PCI) for a simple linear profile based on its parameters. In this regard, the SLs for the proposed PCIs (SLs for the profile parameters) are presented based on SLs of the response variable while considering the in-control profiles. Simulation results reveal satisfactory performance for the proposed method considering absolute percentage error criterion. In addition, the minimum number of profile samples for estimation of the proposed PCIs are determined. A real case in calibration application is also considered to show the applicability of the proposed method in practice.

Keywords: Simple linear profile; Process capability analysis; Loss-based capability index; Statistical process control; Phase I and phase II analysis (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11135-023-01726-4

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