Warranty Data Analysis Dates Format Example: Difference between revisions

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'''Solution'''
'''Solution'''


'''Step 1:''' The data can be entered into a Warranty folio with Dates Format. They are given in the figures below.
'''Step 1:''' The data can be entered into a warranty folio with the dates-of-failure format, as shown in the figures below.


[[image:Warranty Dates Format Sales.png|thumb|center|400px]]
[[image:Warranty Dates Format Sales.png|thumb|center|400px]]
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'''Step 2:''' Set the calculation setting as:
'''Step 2:''' Set the calculation setting as shown next:


[[image:Warranty Dates Format Calculation Settings.png|thumb|center|400px]]
[[image:Warranty Dates Format Calculation Settings.png|thumb|center|400px]]


Please make sure the End of Observation Period to be 8/14/2011.  
Make sure the End of Observation Period is 8/14/2011.  


'''Step 3:''' Click on '''Calculate''' Button, you get the results shown in the '''Analysis Summary''' in the above figure. You also click on the '''Analysis Summary''' to view more results.
'''Step 3:''' After you click the '''Calculate''' Button, you will get the results shown in the '''Analysis Summary''' area in the above figure. You can also click anywhere inside the '''Analysis Summary''' area to view more results.


[[image:Warranty Dates Format Summary.png|thumb|center|400px]]
[[image:Warranty Dates Format Summary.png|thumb|center|400px]]


In the bottom part of the above figure, you can see the warranty data is converted to data format that can be used in standard Weibull++ folio.   
In the bottom part of the above figure, you can see the warranty data is converted to a format that can be used in a Weibull++ standard folio.   


'''Step 4:''' Click on the '''Forecast''' button [[image: Warranty Dates Format Forecast button.png]] to get the following forecast window.
'''Step 4:''' Click on the '''Forecast''' button [[image: Warranty Dates Format Forecast button.png]] to get the following forecast window.
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[[image:Warranty Dates Format Forecast Window.png|thumb|center|400px]]
[[image:Warranty Dates Format Forecast Window.png|thumb|center|400px]]


Click on OK to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.
Click '''OK''' to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.


'''Step 5:''' Click on the '''plot''' button, and choose the '''Expected Failures plot'''. The predicted number of returns for each month was plotted.
'''Step 5:''' Click the '''Plot''' icon and choose the Expected Failures plot. The predicted number of returns for each month was plotted.


[[image:Warranty Dates Format Predicted Failures Plot.png|thumb|center|400px]]
[[image:Warranty Dates Format Predicted Failures Plot.png|thumb|center|400px]]


The rest plots in the plot type drop down list are the same plots as in Webull++ standard folio.
The remaining plots in the '''Plot Type''' drop-down list are the same plots in the Webull++ standard folio.

Revision as of 23:39, 3 May 2012

Weibull-Examples-banner.png


Assume a company has the following information for a product.

Sales

Quantity In-Service Date In-Service
6316 1/1/2010
8447 2/1/2010
5892 3/1/2010
596 4/1/2010
996 5/1/2010
8977 6/1/2010
2578 7/1/2010
8318 8/1/2010
2667 9/1/2010
7452 10/1/2010
1533 11/1/2010
9393 12/1/2010
1966 1/1/2011
8960 2/1/2011
6341 3/1/2011
4005 4/1/2011
3784 5/1/2011
5426 6/1/2011
4958 7/1/2011
6981 8/1/2011


Returns

Quantity Returned Date of Return Date In-Service
2 10/29/2010 10/1/2010
1 11/13/2010 10/1/2010
2 3/15/2011 10/1/2010
5 4/10/2011 10/1/2010
1 11/13/2010 11/1/2010
2 2/19/2011 11/1/2010
1 3/11/2011 11/1/2010
2 5/18/2011 11/1/2010
1 1/9/2011 12/1/2010
2 2/13/2011 12/1/2010
1 3/2/2011 12/1/2010
1 6/7/2011 12/1/2010
1 4/28/2011 1/1/2011
2 6/15/2011 1/1/2011
3 7/15/2011 1/1/2011
1 8/10/2011 2/1/2011
1 8/12/2011 2/1/2011
1 8/14/2011 2/1/2011


Future Sales

Quantity In-Service Date In-Service
5000 9/1/2011
5000 10/1/2011
5000 11/1/2011
5000 12/1/2011
5000 1/1/2012


Using the above information, we want to estimate the failure distribution of this product and forecast warranty returns.

Solution

Step 1: The data can be entered into a warranty folio with the dates-of-failure format, as shown in the figures below.

Warranty Dates Format Sales.png
Warranty Dates Format Returns.png
Warranty Dates Format Future Sales.png


Step 2: Set the calculation setting as shown next:

Warranty Dates Format Calculation Settings.png

Make sure the End of Observation Period is 8/14/2011.

Step 3: After you click the Calculate Button, you will get the results shown in the Analysis Summary area in the above figure. You can also click anywhere inside the Analysis Summary area to view more results.

Warranty Dates Format Summary.png

In the bottom part of the above figure, you can see the warranty data is converted to a format that can be used in a Weibull++ standard folio.

Step 4: Click on the Forecast button Warranty Dates Format Forecast button.png to get the following forecast window.

Warranty Dates Format Forecast Window.png

Click OK to get the forecast return for the future months. Please remember, the current time was set to 8/14/2011.

Step 5: Click the Plot icon and choose the Expected Failures plot. The predicted number of returns for each month was plotted.

Warranty Dates Format Predicted Failures Plot.png

The remaining plots in the Plot Type drop-down list are the same plots in the Webull++ standard folio.

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