Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Process Capability Index - Asymmetrical Positioning of the Process
As stated earlier, the Cp index assumes that the process mean is centred within the tolerance band, but, in practice, this is often an unreasonable assumption. For this reason, alternative indices have been devised which take account of asymmetrical positioning of the process mean relative to mid-tolerance. Consider the process output represented in this next figure, for which the LSL is 10, the USL is 20, the process mean (µ) is 18 and the standard deviation (σ) is 1.166. For this process the Cp index value is 1.43 [i.e. (20 - 10)/ (6 × 1.166)], which might suggest that the output has a very low level of non-conformance. However, as can be seen from the figure, a significant proportion of the output actually lies beyond the upper specification limit. The Cpk index takes account of the asymmetry by relating the spread of one side of the output distribution (3σ) to the difference between the process mean (µ) and the nearest specification limit. Two calculations are performed, and the lowest value (worst case) is taken as the index value.
In the example in the figure above, the Cpk index is 0.57 [ie (20 - 18)/(3 × 1.166)], indicating that the process, as currently set, is not capable of producing to the design specification. The following figure shows the significance of different Cpk values.
1. Some tasks and the order in which they must be performed according to their assembly requirements. These are to be combined into workstations to create an assembly line. The
Select a company that you believe uses employees to achieve a competitive advantage. Discuss how the employees effectively execute the strategy and how the company can sustain this
what scussyiefly disbrstem operations
Why do think the discussion maker acted unfairly in this situation?
Scheduling Meaning and Definition Scheduling is the next technique of production control. In production control scheduling means the arrangement of different operatio
1. Explain the quantitative foundation of Six Sigma, and discuss how following the phases of the DMAIC improvement lifecycle ensures that the quantitative aspect of the approach
Mark Achin sells 3,600 electric motors each year. The cost of these is $200 each, and demand is constant throughout the year. The cost of placing an order is $40, while the holding
Develop a decision tree for the case of a company is operating at full capacity and with product demand rising. The choice is between new equipment and overtime. A 20% rise in sale
The management and Directors of Google have stated that there is no plan for Google to ever pay dividends. Yet, the stock trades at a very high price in dollar terms (around $490 p
What is the advantage of using digits to enter categorical data rather than using words or letters?
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd