Most of previous research on tolerance optimization seeks the optimal tolerance allocation with process parameters such as fixed process mean and variance. This research, however, differs from the previous studies in two ways. First, an integrated optimization scheme is proposed to determine...

Purpose – Six sigma has received considerable attention over the last four years in the UK service sector. The purpose of this paper is to present a review of the literature on six sigma as applied to the service industry, followed by a presentation of the key findings obtained from a pilot...

Purpose – Robust design is a well‐known quality improvement method that focuses on building quality into the design of products and services. Yet, most well established robust design models only consider a single performance measure and their prioritization schemes do not always address the...

Purpose – The selection of the optimal process target for a manufacturing process is critically important as it directly affects the defect rate, rejection and rework costs, and the loss to customers. A recent review of process target literature suggests that future work should incorporate...

Purpose – The purpose of this paper is to focus on the importance of the project selection process and its role in the successful deployment of Six Sigma within organizations. Design/methodology/approach – A review of the literature is presented, highlighting the importance of project...