What does the defect concentration diagram do?
Table of Contents
What does the defect concentration diagram do?
The defect concentration diagram (also problem concentration diagram) is a graphical tool that is useful in analyzing the causes of the product or part defects.
How do you draw a concentration diagram?
Create a Defect Concentration Diagram in 4 Steps
- 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.
Which tool shows the concentration of defects on products by location?
Defect Concentration Diagram is a graphical tool used to identify & mark the location of defects and then to analyze their causes. The defects are marked on a picture or a diagram of the product usually along with frequency of the defects.
How do you make an effective check sheet?
Check Sheet Procedure
- Decide what event or problem will be observed.
- Decide when data will be collected and for how long.
- Design the form.
- Label all spaces on the form.
- Test the check sheet for a short trial period to be sure it collects the appropriate data and is easy to use.
Which of these is not a part of SPC?
Which of these is not a part of SPC’s 7 tools? Explanation: Pareto chart, check sheet, histogram, cause-and-effect diagram, scatter diagram, and control chart are all part of SPC (Statistical Process Control). Design of Experiments is not one of them. 9.
What is the purpose of check sheet?
The check sheet is a form (document) used to collect data in real time at the location where the data is generated….
| Check sheet | |
|---|---|
| Purpose | To provide a structured way to collect quality-related data as a rough means for assessing a process or as an input to other analyses |
What is enthalpy concentration diagram?
Abstract. Generally an enthalpy-concentration diagram for a system is prepared for fixed pressure, and to be complete it should include data on the solid, liquid, and vapor phases. Such charts are useful for calculations involving heat balances with accompanying concentration changes.
What is defect location sheet?
A defect location check sheet (also known as a defect map or a measles chart) is a structured, prepared form for collecting and analyzing data that provides a visual image of the item being evaluated so that data can be collected visually rather than with words.
How do you identify product defects?
Spots, scratches, dirt and dust marks on the product, slight deformations or slight gradation of color – all these are examples of minor defects that can have a negative impression on the consumer due to an imperfect product appearance.
How many types of check sheets are there?
A typical check sheet is divided into regions, and marks made in different regions have different significance. Data is read by observing the location and number of marks on the sheet. Five basic types of check sheets include: Classification check sheet: A trait such as a defect must be classified into a category.
What is defective check sheet?
How many lines does a control chart have?
A Control Chart usually has three horizontal lines in addition to the main plot line, as shown below (Fig. 2). The central line is the average (or mean). The outer two lines are at three standard deviations either side of the mean.
Which of these is not part of SPC 72?
What are types of check sheets?
Types of check sheets: Commonly used check sheets are tabular check sheets or tally sheets, location check sheets and graphical or distribution check sheets.
What is the useful feature of an enthalpy concentration diagram in solution thermodynamics?
Enthalpy-concentration diagrams greatly facilitate the calculation of energy balances involving concentration and phase changes.
How do you read enthalpy diagrams?
On the P-H diagram, pressure is indicated on the y-axis and enthalpy is indicated on the x-axis. Typically enthalpy is in units of Btu/lb and pressure is in units of pounds per square inch (psi). The upside down U figure shown on the diagram designates the points at which the refrigerant changes phase.
Why are TXY diagrams important?
Txy Diagrams (The less volatile component is thus 1-x and 1- y.) For a given temperature and composition, this diagram tells us the nature and composition of each phase of the mixture that is present. Similar drawings can be constructed at constant temperature while allowing pressure to vary.
What is yx diagram?
The x-y diagram (vapor mole fraction versus liquid mole fraction) for vapor-liquid equilibrium (VLE) is shown for a methanol/water mixture being fed to a flash drum. The corresponding T-x-y diagram shows how the points on the x-y diagram are obtained; each point corresponds to a different temperature.
