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

Show the seven layers of iso''s osi model, Q. Show the seven layers of ISO'...

Q. Show the seven layers of ISO's OSI model? Ans:- The seven layers are given below:   -  Application Layer -  Presentation Layer -  Session Layer -  Transport Laye

Explain the term dimensionality of interconnection network, Dimensionality ...

Dimensionality of Interconnection Network Dimensionality refers the arrangement of processing elements or nodes in an interconnection network. In linear network or single dimen

What is tcp/ip, What is TCP/IP TCP/IP is short for Transmission Control...

What is TCP/IP TCP/IP is short for Transmission Control Protocol / Internet Protocol. This is a set of protocol layers that is intended to make data exchange possible on dissim

What is ipv6 addressing, QUESTION (a) What are the problems with IPv4 o...

QUESTION (a) What are the problems with IPv4 on today's Internet and how does IPv6 solve these problems? (b) Describe at least three ways in which IPv6 is more efficient tha

Cipher password guess-cryptography, a. If a password to a cipher is exactly...

a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible? b. Suppose

Layer responsible for putting 1s and 0s into a logical group, Name the laye...

Name the layer responsible for putting 1s and 0s into a logical group? Ans) Frames are broken down into 1s and 0s and placed onto the physical medium by the Data Lin layer.

Show the model for network access security, Q. Show the Model for Network A...

Q. Show the Model for Network Access Security? Model for Network Access Security (1) Gatekeeper functions comprise Password-based login authentications. (2)

Threats to information can include, Threats to information can include ...

Threats to information can include Deletion of a file or files. Corruption, caused either by hardware problems or by a bug in the software. Theft of company data

What is a hypertext link, A hypertext link is a special tag that links sing...

A hypertext link is a special tag that links single page to another page or resource. If you click the link, the browser goes to the link's destination.

Types of redundancy checks, Types of Redundancy Checks Parity Check ...

Types of Redundancy Checks Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redundancy Check)

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