A general class of capability indices in the case of asymmetric tolerances

1997 ◽  
Vol 26 (8) ◽  
pp. 2049-2072 ◽  
Author(s):  
Kerstin Vännman
Keyword(s):  
General Class ◽  
Capability Indices ◽  
Asymmetric Tolerances

The Process Capability Analysis to Assess Capacity of a Cleaning Liquid Product with Asymmetric Tolerances

2020 ◽  
Vol 38 (6A) ◽  
pp. 910-916
Author(s):  
Sohaib Khlil ◽  
Huthaifa Al-Khazraji ◽  
Zina Alabacy
Keyword(s):  
Control Charts ◽  
Liquid Product ◽  
Process Capability ◽  
Process Capability Indices ◽  
Filling Process ◽  
Control Engineering ◽  
Normal Probability ◽  
Capability Indices ◽  
Capability Analysis ◽  
Asymmetric Tolerances

Process capability indices are a powerful tool used by quality control engineering to measure the degree to which the process is or is not meeting the requirements. This paper studies the application of process capability indices in the evaluation of a process with asymmetric tolerances. The analyzed collected data of the cleaning liquid “Zahi”, was used to investigate the ability of the filling process to meet the requested specifications. Matlab software was used to plot control charts, normal probability, and histogram of the data gathered from the production line and further performed statistical calculations. It was observed from the control charts that the filling process is under control. In addition, it was revealed by the process capability indices that the process of filling the cleaning liquid bottle is not fitted with the target value but it is adequate.

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