Defect concentration diagram

From Wikipedia, the free encyclopedia
Jump to: navigation, search

The defect concentration diagram is a graphical tool that is useful in analyzing the causes of the product or part defects.[1] It is a drawing of the product (or other item of interest), with all relevant views displayed, onto which the locations and frequencies of various defects are shown.

Usage[edit]

Defect concentration diagram is used effectively in the following situations:

  1. During data collection phase of problem identification.
  2. Analyzing a part or assembly for possible defects.
  3. Analyzing a product (or a part of a product) being manufactured with several defects.

Steps[edit]

There are a number of steps that are needed to be follow when constructing the defect concentration diagram:

  1. Define the fault or faults (or whatever) being investigated.
  2. Make a map, drawing, or picture.
  3. Mark on the diagram each time a fault (or whatever) occurs and where it occurs.
  4. After a sufficient period of time, analyze it to identify where the faults occur.

References[edit]

  1. ^ Montgomery, Douglas (2005). Introduction to Statistical Quality Control. John Wiley & Sons, Inc. ISBN 978-0-471-65631-9