Template:Reliability demonstration - Revision history

Kate Racaza: Redirected page to Reliability Test Design

2012-06-29T08:03:00Z

Redirected page to Reliability Test Design

← Older revision		Revision as of 08:03, 29 June 2012
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	~~===~~Reliability ~~Demonstration===~~		#REDIRECT [[Reliability Test Design]]
	Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, <math>{{R}_{DEMO}}</math>, at a certain time. With the exception of the exponential distribution (and ignoring the location parameter for the time being), this reliability is going to be a function of time, a shape parameter and a scale parameter.

	~~<br>~~

	~~<center><math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math></center>~~

	~~<br>~~

	~~where:~~

	~~<br>~~

	~~::<math>{{t}_{DEMO}}</math> is the time at which the demonstrated reliability is specified.~~
	~~::<math>\theta</math> is the shape parameter.~~
	~~::<math>\phi</math> is the scale parameter.~~

	~~<br>~~

	Since required inputs to the process include <math>{{R}_{DEMO}}</math>, <math>{{t}_{DEMO}}</math> and <math>\theta</math>, the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math>, which is the reliability that is going to be incorporated into the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to determine how long to test an available number of test units.


	~~{{determining units for available test time}}~~


	~~{{determining test time for available units}}~~

Lisa Hacker: /* Reliability Demonstration */

2012-03-29T23:20:00Z

Reliability Demonstration

← Older revision		Revision as of 23:20, 29 March 2012
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	<br>		<br>

	::<math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math>		<center><math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math></center>

	<br>		<br>

Chris Kahn: /* Reliability Demonstration */

2012-03-09T00:31:20Z

Reliability Demonstration

← Older revision		Revision as of 00:31, 9 March 2012
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	===Reliability Demonstration===		===Reliability Demonstration===
	Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, <math>{{R}_{DEMO}}</math> , at a certain time. With the exception of the exponential distribution (and ignoring the location parameter for the time being), this reliability is going to be a function of time, a shape parameter and a scale parameter.		Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, <math>{{R}_{DEMO}}</math>, at a certain time. With the exception of the exponential distribution (and ignoring the location parameter for the time being), this reliability is going to be a function of time, a shape parameter and a scale parameter.

			<br>

	::<math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math>		::<math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math>

			<br>

	where:		where:

			<br>

	::<math>{{t}_{DEMO}}</math> is the time at which the demonstrated reliability is specified.		::<math>{{t}_{DEMO}}</math> is the time at which the demonstrated reliability is specified.
	::<math>\theta </math> is the shape parameter.		::<math>\theta</math> is the shape parameter.
	::<math>\phi </math> is the scale parameter.		::<math>\phi</math> is the scale parameter.

			<br>

	Since required inputs to the process include <math>{{R}_{DEMO}}</math> , <math>{{t}_{DEMO}}</math> and <math>\theta </math> , the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math> , which is the reliability that is going to be incorporated in the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to ~~find~~ how long to test an available number of test units.		Since required inputs to the process include <math>{{R}_{DEMO}}</math>, <math>{{t}_{DEMO}}</math> and <math>\theta</math>, the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math>, which is the reliability that is going to be incorporated into the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to determine how long to test an available number of test units.

Harry Guo at 22:59, 22 February 2012

2012-02-22T22:59:20Z

← Older revision		Revision as of 22:59, 22 February 2012
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	Since required inputs to the process include <math>{{R}_{DEMO}}</math> , <math>{{t}_{DEMO}}</math> and <math>\theta </math> , the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math> , which is the reliability that is going to be incorporated in the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to find how long to test an available number of test units.		Since required inputs to the process include <math>{{R}_{DEMO}}</math> , <math>{{t}_{DEMO}}</math> and <math>\theta </math> , the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math> , which is the reliability that is going to be incorporated in the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to find how long to test an available number of test units.


	{{determining units for available test time}}		{{determining units for available test time}}


	{{determining test time for available units}}		{{determining test time for available units}}

Harry Guo: Created page with '===Reliability Demonstration=== Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, ${{R}_{DEMO}}$ , a…'

2012-02-22T22:57:59Z

Created page with '===Reliability Demonstration=== Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, <math>{{R}_{DEMO}}</math> , a…'

New page

===Reliability Demonstration===
Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, <math>{{R}_{DEMO}}</math> , at a certain time. With the exception of the exponential distribution (and ignoring the location parameter for the time being), this reliability is going to be a function of time, a shape parameter and a scale parameter.

::<math>{{R}_{DEMO}}=g({{t}_{DEMO}};\theta ,\phi )</math>

where:

::<math>{{t}_{DEMO}}</math> is the time at which the demonstrated reliability is specified.
::<math>\theta </math> is the shape parameter.
::<math>\phi </math> is the scale parameter.

Since required inputs to the process include <math>{{R}_{DEMO}}</math> , <math>{{t}_{DEMO}}</math> and <math>\theta </math> , the value of the scale parameter can be backed out of the reliability equation of the assumed distribution, and will be used in the calculation of another reliability value, <math>{{R}_{TEST}}</math> , which is the reliability that is going to be incorporated in the actual test calculation. How this calculation is performed depends on whether one is attempting to solve for the number of units to be tested in an available amount of time, or attempting to find how long to test an available number of test units.

{{determining units for available test time}}

{{determining test time for available units}}

Template:Reliability demonstration - Revision history

Kate Racaza: Redirected page to Reliability Test Design

Lisa Hacker: /* Reliability Demonstration */

Chris Kahn: /* Reliability Demonstration */

Harry Guo at 22:59, 22 February 2012

Harry Guo: Created page with '===Reliability Demonstration=== Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, {{R}_{DEMO}} , a…'

Harry Guo: Created page with '===Reliability Demonstration=== Frequently, the entire purpose of designing a test with few or no failures is to demonstrate a certain reliability, ${{R}_{DEMO}}$ , a…'