منابع مشابه
Capability Indices for Rayleigh Process
Monitoring, control and improvement of quality are important for companies. Process capability indices (PCIs) are tools widely used by the industries to determine the quality of their products and the performance of their manufacturing processes. Classic versions of these indices were constructed for processes whose quality characteristics have a normal distribution. But, many of these ...
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A case from the authors’ experience reveals that dimensional tolerance, in terms of physical dimensions of components and their position within the system; interact to compound the process variability and uncertainty within a project. Variability adds to the costs of a process with long cycle times, high work in progress levels; wasted capacity due to low utilization of resources; lost throughp...
متن کاملProcess Yield and Capability Indices
Capability indices measure the performance of a process. Although process yield is the primary focus on the performance criteria, the " ( , ) p C u v indices combine process yield and process centering. With this compromise, there is no direct link between the process yield and these indices, but literature provides lower and upper bounds for the process yield. However errors in the proposed re...
متن کاملDeveloping New Multivariate Process Capability Indices for Autocorrelated Data
Traditionally, the process capability index is developed assuming that the process output data are independent and follow normal distribution. However, in most environmental cases, the process data have more than one quality characteristic and exhibit property of autocorrelation. We propose two novel multivariate process capability indices for autocorrelated data, NMACp and NMACpm for the-nomin...
متن کاملFuzzy inference to assess manufacturing process capability with imprecise data
Process capability indices provide numerical measures on whether a process conforms to the defined manufacturing capability prerequisite. These have been successfully applied by companies to compete with and to lead high-profit markets by evaluating the quality and productivity performance. The loss-based process capability index Cpm, sometimes called the Taguchi index, was proposed to measure ...
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ژورنال
عنوان ژورنال: Quality Innovation Prosperity
سال: 2017
ISSN: 1338-984X,1335-1745
DOI: 10.12776/qip.v21i3.910