Warranty Data Analysis Example - Revision history

Kate Racaza at 16:24, 28 September 2015

2015-09-28T16:24:10Z

← Older revision		Revision as of 16:24, 28 September 2015
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	{{Reference Example}}		{{Reference Example}}

	This example ~~compares~~ the warranty data analysis ~~results~~.		This example validates the results of a warranty data analysis in a Weibull++ warranty folio.

Kate Racaza at 17:15, 9 June 2014

2014-06-09T17:15:46Z

← Older revision		Revision as of 17:15, 9 June 2014
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	The following picture shows the parameters of the lognormal distribution and ~~the converted~~ failure/suspension data. The results are the same as the results shown in the book.		The following picture shows the parameters of the lognormal distribution and its associated failure/suspension data. The results are the same as the results shown in the book.

	[[Image: warranty_results.png\|center]]		[[Image: warranty_results.png\|center]]


			The following picture shows the probability plot of the lognormal distribution.


			[[Image: warranty_plot.png\|center\|550 px]]

Kate Racaza at 21:17, 6 June 2014

2014-06-06T21:17:49Z

← Older revision		Revision as of 21:17, 6 June 2014
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	{{Reference_Example_Heading4}}		{{Reference_Example_Heading4}}

	In Weibull++, the Nevada ~~warranty~~ format ~~is used~~. The data ~~is entered~~ in the ~~following folio~~:		In Weibull++, the data set is entered into a warranty folio, using the Nevada chart format. The following pictures show the sales and returns data.

			[[File: warranty_sales.png\|center\|550px]]


			[[Image: warranty_returns.png\|center\|550px]]


			The following picture shows the parameters of the lognormal distribution and the converted failure/suspension data. The results are the same as the results shown in the book.

			[[Image: warranty_results.png\|center]]

Kate Racaza at 20:21, 6 June 2014

2014-06-06T20:21:44Z

← Older revision		Revision as of 20:21, 6 June 2014
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	{{Reference_Example_Heading3}}		{{Reference_Example_Heading3}}

			The book first converted the data in the table above into the following format, as given in Table 11.4 in the book.

			{\| {{table}}
			!TTF (Months)
			!Number of Failures
			!Number of Censored Units
			\|-
			\| 1\|\|9\|\|568
			\|-
			\| 2\|\|12\|\|637
			\|-
			\| 3\|\|16\|\|821
			\|-
			\| 4\|\|18\|\|1229
			\|-
			\| 5\|\|19\|\|1861
			\|-
			\| 6\|\|17\|\|2032
			\|-
			\| 7\|\|21\|\|2768
			\|-
			\| 8\|\|19\|\|2927
			\|-
			\| 9\|\|14\|\|3029
			\|-
			\| 10\|\|14\|\|2203
			\|-
			\| 11\|\|6\|\|1834
			\|-
			\| 12\|\|3\|\|2090
			\|-
			\|}

			A lognormal distribution is used and the fitted model parameters are: Ln-Mean = 6.03 and Ln-Std = 1.63.


	{{Reference_Example_Heading4}}		{{Reference_Example_Heading4}}

			In Weibull++, the Nevada warranty format is used. The data is entered in the following folio:

Kate Racaza at 20:20, 6 June 2014

2014-06-06T20:20:02Z

← Older revision		Revision as of 20:20, 6 June 2014
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	A Nevada chart for the warranty data is provided in Table 11.3. The last two rows were combined, as specified in the example.		A Nevada chart for the warranty data is provided in Table 11.3. The last two rows were combined, as specified in the example.

	{\| align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="0" style="text-align: center"		{\| border="0" align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="0" style="text-align: center"
	\|-		!
	!colspan="15" style="border-bottom: 2px solid black;"\|TTF		!colspan="12" style="border-bottom: 2px solid black;"\|TTF
	\|-		\|-
	!TIS		!TIS
Line 74:		Line 74:
	\|-		\|-
	!Total		!Total
	\|9\|\|12\|\|16\|\|18\|\|19\|\|17\|\|21\|\|19\|\|14\|\|14\|\|6\|\|3\|\| \|\|		\|9\|\|12\|\|16\|\|18\|\|19\|\|17\|\|21\|\|19\|\|14\|\|14\|\|6\|\|3\|\|
	\|-		\|-
	\|}		\|}

Kate Racaza: Created page with '{{Reference Example}} This example compares the warranty data analysis results. {{Reference_Example_Heading1}} The data set is from Example 11.2 on page 453 in the book ''Lif…'

2014-06-06T20:05:41Z

Created page with '{{Reference Example}} This example compares the warranty data analysis results. {{Reference_Example_Heading1}} The data set is from Example 11.2 on page 453 in the book ''Lif…'

New page

{{Reference Example}}

This example compares the warranty data analysis results.

{{Reference_Example_Heading1}}

The data set is from Example 11.2 on page 453 in the book ''Life Cycle Reliability Engineering'' by Dr. Guangbin Yang, John Wiley & Sons, 2007.

{{Reference_Example_Heading2}}

A Nevada chart for the warranty data is provided in Table 11.3. The last two rows were combined, as specified in the example.

{| align="center" style="border-collapse: collapse;" cellpadding="5" cellspacing="0" style="text-align: center"
|-
!colspan="15" style="border-bottom: 2px solid black;"|TTF
|-
!TIS
!1
!2
!3
!4
!5
!6
!7
!8
!9
!10
!11
!12
!Total
!Sales Volume
|-
!colspan="15" style="border-bottom: 2px solid black;"|
|-
!12
|3||0||3||3||4||2||1||5||4||2||3||3||45||2123
|-
!11
|0||1||2||0||4||2||1||2||0||4||3||||30||1853
|-
!10
|1||3||2||2||3||4||3||5||4||8||||||45||2238
|-
!9
|1||2||0||3||4||2||2||3||6||||||||32||3052
|-
!8
|2||3||2||6||2||1||6||4||||||||||34||2953
|-
!7
|1||1||3||2||1||4||8||||||||||||27||2788
|-
!6
|1||0||1||0||1||2||||||||||||||11||2037
|-
!5
|0||0||1||1||0||||||||||||||||7||1863
|-
!4
|0||0||1||1||||||||||||||||||6||1231
|-
!3
|0||1||1||||||||||||||||||||5||823
|-
!2
|0||1||||||||||||||||||||||3||638
|-
!1
|0||||||||||||||||||||||||1||568
|-
!colspan="15" style="border-top: 2px solid black;"|
|-
!Total
|9||12||16||18||19||17||21||19||14||14||6||3|| ||
|-
|}

{{Reference_Example_Heading3}}
{{Reference_Example_Heading4}}