Parts count method calculation, Computer Networking

Assignment Help:

 

METHOD OF CALCULATION

It involves counting the number of each part type and multiplying with the generic failure rate of each part. On summing up the product, we obtain the failure rate of each functional circuit.

The information needed to apply the method is:

(1) Generic failure rate

(2) Part Quality level

(3) Equipment Environment

The equipment failure rate is obtained by looking up a generic failure rate in Table - 4.1, multiplying it by quality factor, and then summing it with failure rate obtained by other components. The general mathematical expression for equipment failure rate with this method is:

1534_PARTS COUNT METHOD Calculation.jpg

Above equation is applied, when the entire equipment is being used in one environment. If the equipment comprises several units operating in different environments, (such as avionics systems with units in airborne inhabited or uninhabited  environment), then this equation should be applied to the period of the equipment in each environment. These "environment equipment" failure rates should be added to determine total .the same values that are used in part stress analysis. Microcircuits  have  an  additional  multiplying  factor,  πL,  which  accounts  for maturity of the manufacturing process. For devices that are in production for two years or more, there is no need to apply learning factor. For those in production less than two years, λg should be multiplied by learning factor πL 

 

 


Related Discussions:- Parts count method calculation

State about the future of the intranet, Future of the intranet At ...

Future of the intranet At present, the world of information technology is guided bythe C 3 paradigm that stands for Command, Control and Communication, which is normally

Odd-even transposition algorithem, Algorithm:  Odd-Even Transposition //...

Algorithm:  Odd-Even Transposition //Input: N numbers that are in the unsorted form //Assume that element bi is assigned to pi for I=1 to N { If (I%2 != 0) //i.e Odd

Programming based on message passing, Programming Based on Message Passing ...

Programming Based on Message Passing As we know, the programming model based on message passing uses high level programming languages like C/C++ along with a number of message

Metric translation takes place in redistributing routes, Why Does metric tr...

Why Does metric translation takes place in redistributing routes?

Illustrate the drawbacks of stop and wait, Q. Illustrate the Drawbacks of s...

Q. Illustrate the Drawbacks of stop and wait? Drawbacks of stop and wait - Only one frame is able to be in transit at a time - After every frame sent the host must wai

Error correcting code - hamming code, Error Correcting Code - Hamming Code:...

Error Correcting Code - Hamming Code: Hamming code is the one of the error-correcting code named after its inventor. Because of the simplicity of the hamming code, it can dete

Compare Intranet with Internet and LAN, Intranet vs Internet vs LAN It...

Intranet vs Internet vs LAN It is certainly possible that both Intranets and the Internet can coexist. As spelt theoretically, the entire Intranet could be located at a remote

Explain client and server networking model, Explain Client/Server Networkin...

Explain Client/Server Networking Model. A networking model where one or more powerful  computers (servers) give the dissimilar network services and all other user's computers (

Objectives of performance evaluations, OBJECTIVES After studying this ...

OBJECTIVES After studying this part, you should be able to: Explain the Metrics for Performance Evaluation; Notify about various Parallel System Overheads; Desc

Low frequency cut-off of the band-pass, Question Approximately what is ...

Question Approximately what is the low frequency cut-off of the band-pass filter shown in the figure?

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