Results 1 to 10 of about 154,806 (248)
Some of the next articles are maybe not open access.
A mixed nonparametric control chart for efficient process monitoring
The 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
openaire +3 more sources
A mixed control chart to monitor the process
International Journal of Production Research, 2015In 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.
Aslam, M, Azam, M, Khan, N, Jun, CH
openaire +4 more sources
Mixed Tukey EWMA-CUSUM control chart and its applications
Quality Technology & 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 +2 more
openaire +3 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
openaire +3 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
Quality and Reliability Engineering International, 2021
AbstractControl charts are designed under the normality assumption of the quality characteristic of the process. However, the normality assumption rarely holds in practice. In non‐normal conditions, parametric charts tend to display more false alarm rates and invalid out‐of‐control comparisons.
Saber Ali +5 more
openaire +1 more source
AbstractControl charts are designed under the normality assumption of the quality characteristic of the process. However, the normality assumption rarely holds in practice. In non‐normal conditions, parametric charts tend to display more false alarm rates and invalid out‐of‐control comparisons.
Saber Ali +5 more
openaire +1 more source
On Designing Mixed Nonparametric Control Chart for Monitoring the Manufacturing Processes
Arabian Journal for Science and Engineering, 2021Efficient control charts are used to maintain and improve the manufacturing, industrial and service processes. Control chart is a basic tool of quality practitioners for producing products that meet market requirements in terms of quality, reliability and functionality. Lack of normality is a common occurrence in these processes.
Saber Ali +5 more
openaire +1 more source
On a class of mixed EWMA‐CUSUM median control charts for process monitoring
Quality and Reliability Engineering International, 2020AbstractMonitoring of any manufacturing, production, or industrial process can be controlled and improved by removing these special cause of variations using control charts. Shewhart‐type control charts are effective to control a large amount of special variations, whereas, cumulative sum (CUSUM) and exponentially weighted moving average (EWMA) charts ...
Shahid Hussain 0005 +3 more
openaire +1 more source
A mixed control chart using process capability index
Sequential Analysis, 2017ABSTRACTControl 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 +2 more sources