Defect concentration diagram
Appearance
The defect concentration diagram (also problem concentration diagram[1]) is a graphical tool that is useful in analyzing the causes of the product or part defects.[2] 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:
- During data collection phase of problem identification.
- Analyzing a part or assembly for possible defects.
- 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:
- Define the fault or faults (or whatever) being investigated.
- Make a map, drawing, or picture.
- Mark on the diagram each time a fault (or whatever) occurs and where it occurs.
- After a sufficient period of time, analyze it to identify where the faults occur.
References
[edit]- ^ Bjørn Andersen, Tom Fagerhaug, and Marti Beltz, Problem Concentration Diagram, on https://ASQ.org; read 20. August 2015.
- ^ Douglas Montgomery (2005). Introduction to Statistical Quality Control. John Wiley & Sons, Inc. ISBN 978-0-471-65631-9