To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Languages
Recent
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

Probabilistic design

From Wikipedia, the free encyclopedia

Probabilistic design is a discipline within engineering design. It deals primarily with the consideration of the effects of random variability upon the performance of an engineering system during the design phase. Typically, these effects are related to quality and reliability. Thus, probabilistic design is a tool that is mostly used in areas that are concerned with quality and reliability. For example, product design, quality control, systems engineering, machine design, civil engineering (particularly useful in limit state design) and manufacturing. It differs from the classical approach to design by assuming a small probability of failure instead of using the safety factor. [1] [2]

YouTube Encyclopedic

  • 1/5
    Views:
    4 011
    1 263
    8 651
    904
    431 731
  • James Stanier - Probabilistic Data Structures
  • Sankaran Mahadevan: Optimization Under Uncertainty - Research Focus #3, Risk & Reliability
  • Probabilistic Analysis : Hiring Problem #1
  • Mod-08 Lec-32 Probabilistic methods in earthquake engineering-1
  • Decision Tree Tutorial in 7 minutes with Decision Tree Analysis & Decision Tree Example (Basic)

Transcription

Contents

Designer's perspective

Example showing statistical interference of distributions of applied load and strength, resulting in some failures[3]
Example showing statistical interference of distributions of applied load and strength, resulting in some failures[3]

When using a probabilistic approach to design, the designer no longer thinks of each variable as a single value or number. Instead, each variable is viewed as a probability distribution. From this perspective, probabilistic design predicts the flow of variability (or distributions) through a system. By considering this flow, a designer can make adjustments to reduce the flow of random variability, and improve quality. Proponents of the approach contend that many quality problems can be predicted and rectified during the early design stages and at a much reduced cost.

The objective of probabilistic design

Typically, the goal of probabilistic design is to identify the design that will exhibit the smallest effects of random variability. This could be the one design option out of several that is found to be most robust. Alternatively, it could be the only design option available, but with the optimum combination of input variables and parameters. This second approach is sometimes referred to as robustification, parameter design or design for six sigma

Methods used

Essentially, probabilistic design focuses upon the prediction of the effects of random variability. Some methods that are used to predict the random variability of an output include:

See also

Footnotes

  1. ^ Sundararajan, S (1995). Probabilistic Structural Mechanics Handbook. Springer. ISBN 978-0412054815.
  2. ^ Long, M W; Narcico, J D (June 1999), Design Methodology for Composite Aircraft Structures, DOT/FAA/AR-99/2, FAA, retrieved 24 January 2015
  3. ^ Sundarth, S; Woeste, Frank E.; Galligan, William (1978), Differential reliability : probabilistic engineering applied to wood members in bending-tension (PDF), Res. Pap. FPL-RP-302., US Forest Products Laboratory, retrieved 21 January 2015

References

  • Ang and Tang (2006) Probability Concepts in Engineering: Emphasis on Applications to Civil and Environmental Engineering. John Wiley & Sons. ISBN 0-471-72064-X
  • Ash (1993) The Probability Tutoring Book: An Intuitive Course for Engineers and Scientists (and Everyone Else). Wiley-IEEE Press. ISBN 0-7803-1051-9
  • Clausing (1994) Total Quality Development: A Step-By-Step Guide to World-Class Concurrent Engineering. American Society of Mechanical Engineers. ISBN 0-7918-0035-0
  • Haugen (1980) Probabilistic mechanical design. Wiley. ISBN 0-471-05847-5
  • Papoulis (2002) Probability, Random Variables and Stochastic Process. McGraw-Hill Publishing Co. ISBN 0-07-119981-0
  • Siddall (1982) Optimal Engineering Design. CRC. ISBN 0-8247-1633-7

External links

This page was last edited on 1 May 2018, at 10:42
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.