Process capability index - measure of inherent capability, Operation Management

Assignment Help:

Process Capability Index - Measure of the Inherent Capability

This index provides a measure of the inherent capability of a process by simply relating the 6σ spread of the process to the tolerance band. The assumption is made that the mean m of the process lies at mid- tolerance, as shown in the figure below. If the Cp index is less than 1, then a significant proportion of the process output will be out with specification, even when the process mean is centred within the tolerance band.

74_Process Capability Index - Measure of Inherent Capability.png

If the Cp index value is equal to 1, then, provided the process mean is centred within the tolerance band, only 3 parts per thousand (0.3 per cent) will be outwith the specification. If the Cp index value is greater than 1, and the process mean is centred, then a correspondingly higher proportion of the output will conform to specification. For example, GE/Motorola's six-sigma (ie ±6 sigma) programme equates to a Cp index value of 2, and a non- conformance rate of 3.4 parts per million.


Related Discussions:- Process capability index - measure of inherent capability

Proposed solutions to combat conflicts of interest, Three major solutions h...

Three major solutions have been proposed to combat the medical industry conflicts of interest detailed above in this paper. The first solution is embodied in the Physician Payments

Upper Control limit, Twenty-five samples of size thirty (30) were collected...

Twenty-five samples of size thirty (30) were collected and a total of 48 nonconforming items were found yielding p-bar = 0.064. The three sigma upper control limit (UCL) for a p co

Determine the order size that will minimize the total cost, You are the Sto...

You are the Stores Manager at the Ministry of Information and you have the responsibility of managing store room No. 101 where all blank papers for this Ministry are kept. The ann

Describe expect it to take for the customer to wait in line, A toll tunnel ...

A toll tunnel has decided to experiment with the use of a debit card for the collection of tolls. Initially, only one lane will be used. Cars are estimated to arrive at this experi

Explain mamdouh finally sued for national origin, Mamdouh El-Hakem was empl...

Mamdouh El-Hakem was employed by BJY, Inc., for more than a year. His manager repeatedly called Mamdouh, an Arabic employee, "Manny" or "Hank", instead of his given name. His manag

Factors for plant location choice - availability of services, Factors for p...

Factors for plant Location choice - Availability of Services There are six main  services which  need to be  considered: Gas Electricity Water Drainag

Explain the s&op process., Describe the S&OP process. What are the major tr...

Describe the S&OP process. What are the major trade-offs that must be considered?

Explain consumer price index, What are some characteristics and provisions ...

What are some characteristics and provisions of the cost of living escalator clauses and wage reopener arrangements that are part of the unions' efforts to adjust to the lack of de

Explain standard and superior materials, 4 Which of the following best desc...

4 Which of the following best describes the materials the company uses to make its footwear? a Synthetic fibers, waterproof polyesters, microfibers, rubber, and metal eyelets

Explain counteract prejudice, Counteracting Prejudice One of the simplest a...

Counteracting Prejudice One of the simplest and most powerful ways to counteract prejudice and discrimination is to articulate and share stereotypes and preconceived notions. How c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd