Title: Loss-based process capability indices: a review

Authors: Mohammad Abdolshah, Rosnah Mohd. Yusuff, Tang Sai Hong, Md. Yusof B. Ismail

Addresses: Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia (UPM University), Serdang, Selangor, Malaysia. ' Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia (UPM University), Serdang, Selangor, Malaysia. ' Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia (UPM University), Serdang, Selangor, Malaysia. ' Faculty of Manufacturing Engineering, University Malaysia Pahang, Kuantan, Pahang, Malaysia

Abstract: Process capability indices (PCIs) are appropriate tools to measure the inherent capability of a process, but most of them do not consider the losses of a process, while in today|s competitive business environment, it is becoming more and more important for companies to evaluate and minimise their losses. This paper presents a review of loss-based PCIs such as C_pm, C_pmk, PCI_θ, C_pc, L_e and L^″_e. This paper also discusses characteristics of loss-based PCIs such as reject based, asymmetric, bounded, loss based and target based. Finally, recommendations were made for developing a new loss-based process capability index with more excellent specifications.

Keywords: loss-based PCIs; process capability indices; specifications.

DOI: 10.1504/IJPQM.2011.037729

International Journal of Productivity and Quality Management, 2011 Vol.7 No.1, pp.1 - 21

Published online: 26 Dec 2010 *

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