Improved Warning Limits Control Chart for Increases in Fraction Nonconforming

By : M.P. Gadre

Page No: 64-73

Abstract:
In this article, ‘Improved Warning Limits control chart to monitor the number of defectives in a sample’ (IWL-d) chart is proposed. It is numerically verified that, IWL-d chart significantly reduces the out of control ‘Average Time to Signal’ (ATS) as compared to the d chart, ‘Modified Control Chart with Warning Limits to monitor the number of defectives in a sample’ (MCCWL-d) proposed by Rattihalli et al. (2021-2022) and ‘Improved Control Chart’ (ICC-d) proposed by Gadre and Rattihalli (2022).

Author
M. P. Garde  Retd. Professor, Savitribai Phule Pune University, Pune, India
 

DOI: DOI-https://doi.org/10.32381/IAPQRT.2026.50.01.3