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A mixed control chart to monitor the process
International Journal of Production Research, 2015 In this paper, we propose a mixed control chart to monitor the process quality using attribute data combined with variable data. The proposed control chart proceeds like an np control chart based on the number of nonconforming parts but requires variable data only when the decision is indeterminate.
Muhammad Aslam +2 more
exaly +4 more sources
Mixed CUSUM-EWMA chart for monitoring process dispersion
International Journal of Advanced Manufacturing Technology, 2016 Every industrial process has to encounter two types of variation in product characteristic(s) that can be classified as common and special cause variations. These variations can exist in any parameters (like location, dispersion, shape, etc.) of the distribution of process characteristic.
Babar Zaman +2 more
exaly +3 more sources
A mixed control chart using process capability index
Sequential Analysis, 2017 ABSTRACTControl charts are considered as a compulsory tool for the monitoring and improvement of the quality of products. The commonly used attribute and the variable control charts are unsatisfactory for process monitoring. To overcome this difficulty, we proposed a monitoring scheme that is an improved technique based on the joint merits of the ...
Aslam, M. +4 more
openaire +3 more sources
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A mixed nonparametric control chart for efficient process monitoring
International Journal of Advanced Manufacturing Technology, 2018In this paper, we propose a nonparametric mixed control chart using exponentially weighted moving average and cumulative sum (statistics for efficient monitoring of quality characteristic). The proposed control chart, namely NPMEC chart, proceeds in two steps.
Atif Abbasi +2 more
exaly +2 more sources
Mixed Tukey EWMA-CUSUM control chart and its applications
Quality Technology and Quantitative Management, 2017AbstractTukey control chart (TCC) is a popular choice for robust monitoring of process parameters. With the advancement in technology, we develop refined techniques that incorporate multiple aspects in a single structure. This article is a similar effort to design an improved charting structure in the form of mixed Tukey EWMA-CUSUM chart (namely MEC ...
Muhammad Riaz, Qurat-Ul-Ain Khaliq
exaly +2 more sources
A Mixed EWMA–CUSUM Control Chart for Weibull‐Distributed Quality Characteristics
Quality and Reliability Engineering International, 2016The control charts have been widely used for process monitoring. Shewhart control chart has ability to detect large disturbances in the process. The EWMA and CUSUM charts have ability to detect a small change in the manufacturing process. In this paper, we will design a mixed EWMA–CUSUM control chart for Weibull‐distributed quality characteristics. The
Muhammad Aslam
exaly +2 more sources
Symmetry, 2020 The need for a control chart that can visualize and recognize the symmetric or asymmetric pattern of the monitoring process with more than one type of quality characteristic is a necessity in the era of Industry 4.0.
Muhammad Ahsan +2 more
exaly +3 more sources
TheT2chart with mixed samples to control bivariate autocorrelated processes
International Journal of Production Research, 2016 In this paper, we propose the use of the T2 chart with the mixed sampling strategy (MS) to monitor the mean vector of bivariate processes with observations that fit to a first-order vector autoregressive model.
Roberto Campos Leoni +2 more
exaly +2 more sources
A Mixed-Initiative Approach to Reusing Infographic Charts
IEEE Transactions on Visualization and Computer Graphics, 2022Infographic bar charts have been widely adopted for communicating numerical information because of their attractiveness and memorability. However, these infographics are often created manually with general tools, such as PowerPoint and Adobe Illustrator, and merely composed of primitive visual elements, such as text blocks and shapes.
Weiwei Cui 0001 +6 more
openaire +2 more sources
Multivariate semiparametric control charts for mixed-type data
Statistical Methods in Medical Research, 2023A useful tool that has gained popularity in the Quality Control area is the control chart which monitors a process over time, identifies potential changes, understands variations, and eventually improves the quality and performance of the process.
Elisavet M Sofikitou +2 more
openaire +2 more sources