نتایج جستجو برای: processes capability index

تعداد نتایج: 992705  

Journal: :Electr. Notes Theor. Comput. Sci. 2006
Tom Chothia Dominic Duggan

Capability-passing processes model global applications in a way that decouples the global agreement aspects of protocols from the details of how the communications are actually made. It relies on a restricted API or programming language and on the exchange of digital certificates representing capabilities to ensure that participants are faithful to a protocol and that outsiders cannot interfere...

2015
Yu Ting Tai

Process yield has been an essential criterion used for manufacturing industries in business management. Quality managers and engineers involved in factories require capability analyses to access process yields, particularly, for processes with a very low fraction of defectives. It is noted that the accuracy of process yield is important; as it is one of major considerations for supplier selecti...

Journal: :Quality and Reliability Eng. Int. 2015
Toni Lupo

The process capability analysis is a crucial activity to evaluate if the process outcome meets the design specifications. Classically, such analysis is performed by verifying the in-control condition of the process and evaluating suitable capability indices, by assuming the process in-control steady-state condition. However, the in-control period of the process characterizes only a part of the ...

Amirhossein Amiri Babak Abbasi Erfaneh Nikzad

The manufacturing operations often involve multistage processes where the process capability of each stage is affected by the process capability of its precedent processes. This property is known as the cascade property. The purpose of this paper is to estimate the process capability of the second stage of two-stage process while the cascade property impact is removed using residuals analysis. ...

2005
M. L. HUANG K. S. CHEN R. K. LI

Statistical techniques are effective and powerful means of quantifying the variability of processes, analyzing this variability with reference to product requirements, and eliminating this variability in product manufacturing. Many process capability indices have been effectively and widely used to determine whether the quality of a process meets preset targets. However, conventional process ca...

2004
Jutta Jessenberger Claus Weihs

Over the past few years continuously new process capability indices have been developed, most of them with the aim to add some feature missed in former process capability indices. Thus, for nearly any thinkable situation now a special index exists which makes choosing a certain index as difficult as interpreting and comparing index values correctly. In this paper we propose the use of the expec...

1998
Stefan Steiner Bovas Abraham

1. Introduction A process capability index is a numerical summary that compares the behavior of a product or process characteristic to engineering specifications. These measures are also often called capability or performance indices or ratios; we use capability index as the generic term. A capability index relates the voice of the customer (specification limits) to the voice of the process. A ...

2001
Eva Kureková

A measurement control system ensures that measuring equipment and measurement processes are fit for their intended use and its important in achieving product quality objectives. The following paper introduces theoretical foundations for determination of the measuring process capability. Defines three capability indexes in short and recommended use of the Cpm index.

G. V. S. S. Sharma P. Srinivasa Rao

The define–measure–analyze–improve–control (DMAIC) approach is a five-strata approach, namely DMAIC. This approach is the scientific approach for reducing the deviations and improving the capability levels of the manufacturing processes. The present work elaborates on DMAIC approach applied in reducing the process variations of the stub-end-hole boring operation of the manufacture of cra...

Journal: :iranian journal of fuzzy systems 2013
bahram sadeghpour gildeh tala angoshtari

a manufacturing process cannot be released to production until it has been proven to be stable. also, we cannot begin to talk about process capability until we have demonstrated stability in our process. this means that the process variation is the result of random causes only and all assignable or special causes have been removed. in complicated manufacturing processes, such as drilling proces...

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