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19:34, 7 June 2012 Lisa Hacker talk contribs deleted page Weibull++ Notes on Negative Time Values (content was: 'One of the disadvantages of using the logistic distribution for reliability calculations is the fact that the logistic distribution starts at negative inf…' (and the only contributor was 'Steve Sharp'))
19:32, 7 June 2012 Lisa Hacker talk contribs deleted page New3 Confidence Bounds (content was: 'In this section, we present the methods used in the application to estimate the different types of confidence bounds for logistically distributed data. Th…' (and the only contributor was 'Steve Sharp'))
19:32, 7 June 2012 Lisa Hacker talk contribs deleted page Example 2 (content was: 'Using the data in Example 1, estimate the 95% confidence bounds.' (and the only contributor was 'Steve Sharp'))
19:31, 7 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 3 (content was: 'The data is entered into a Non-Parametric RDA Specialized Folio in Weibull++ as follows. The results are as follows, The results indicate that after 13…' (and the only contributor was 'Steve Sharp'))
19:31, 7 June 2012 Lisa Hacker talk contribs deleted page SYS APP B (content was: '=References= 1) Aitchison, J. and J.A.C. Brown, The Lognormal Distribution, Cambridge University Press, New York, 1957. 2) Bar…' (and the only contributor was 'Nicolette Young'))
19:31, 7 June 2012 Lisa Hacker talk contribs deleted page SimuMatic (content was: 'Reliability analysis using simulation, in which reliability analyses are performed a large number of times on data sets that have been created using Monte Carlo simulation, can be a valuable tool for reliability practitioners. Such simul…')
19:30, 7 June 2012 Lisa Hacker talk contribs deleted page Confidence Bounds for Competing Failure Modes (content was: 'The method available in Weibull++ for estimating the different types of confidence bounds, for competing failure modes analysis, is the Fisher matrix meth…' (and the only contributor was 'Steve Sharp'))
19:30, 7 June 2012 Lisa Hacker talk contribs deleted page Simple Plotting (content was: 'One popular graphical method for making this determination involves plotting the data with confidence bounds and seeing whether the bounds overlap, or sep…' (and the only contributor was 'Steve Sharp'))
19:30, 7 June 2012 Lisa Hacker talk contribs deleted page Using Contour Plots (content was: 'To determine whether two data sets are significantly different and at what confidence level, one can utilize the contour plots provided in Weibull++. By o…' (and the only contributor was 'Steve Sharp'))
19:30, 7 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 15 (content was: 'For both data sets the two-parameter Weibull distribution best fits the data. The contour plots were generated and overlaid on a MultiPlot. <math></m…' (and the only contributor was 'Steve Sharp'))
19:29, 7 June 2012 Lisa Hacker talk contribs deleted page Confidence Level Detector (content was: 'The Confidence Level Detector (CLD) utility is located as an option in the Contour Plot Setup window. To activate the utility, check the “Plot Critical …' (and the only contributor was 'Steve Sharp'))
19:29, 7 June 2012 Lisa Hacker talk contribs deleted page SYS Chapter7 (content was: '=Introduction to Repairable Systems= ==Repairable Systems== In prior chapters, the analysis was focused on determining the reliability of the syst…' (and the only contributor was 'Nicolette Young'))
19:28, 7 June 2012 Lisa Hacker talk contribs deleted page File:Reldata3.jpg
19:28, 7 June 2012 Lisa Hacker talk contribs deleted page File:Reldata4.jpg
19:27, 7 June 2012 Lisa Hacker talk contribs deleted page File:Difference detection matrix.jpg
19:27, 7 June 2012 Lisa Hacker talk contribs deleted page Example 16 (content was: 'Using the data presented in Example 15, use Weibull++'s Comparison Wizard to estimate the probability that units from the new design will outlast units fr…' (and the only contributor was 'Steve Sharp'))
19:26, 7 June 2012 Lisa Hacker talk contribs deleted page New The Generalized Gamma Distribution (content was: 'While not as frequently used for modeling life data as the previous distributions, the generalized gamma distribution does have the ability to mimic the a…' (and the only contributor was 'Steve Sharp'))
19:26, 7 June 2012 Lisa Hacker talk contribs deleted page New Other Distributions (content was: 'Besides the Weibull, exponential, normal and lognormal, there are other distributions that are used to model reliability and life data. However, these fou…' (and the only contributor was 'Steve Sharp'))
19:26, 7 June 2012 Lisa Hacker talk contribs deleted page ALT APP D (content was: '=References Appendix D= 1) Aitchison, J., Jr. and Brown, J.A.C., The Lognormal Distribution, Cambridge University Press, New York, 176 pp., 1957. 2) Cramer, H., Mathematical Methods of Statistics, Princeton Univ…')
19:26, 7 June 2012 Lisa Hacker talk contribs deleted page ALT Chapter5 (content was: '=Life Distributions= In this section we will briefly present three lifetime distributions commonly used in accelerated life test analysis, namely the 1-parameter exponential, the 2-parameter Weibull and the lognormal distributions.…')
19:25, 7 June 2012 Lisa Hacker talk contribs deleted page New2 Confidence Bounds (content was: 'The only method available in Weibull++ for confidence bounds for the gamma distribution is the Fisher matrix, which is described next. The complete deriva…' (and the only contributor was 'Steve Sharp'))
19:23, 7 June 2012 Lisa Hacker talk contribs deleted page New4 Confidence Bounds (content was: 'The method used by the application in estimating the different types of confidence bounds for loglogistically distributed data is presented in this sectio…' (and the only contributor was 'Steve Sharp'))
19:23, 7 June 2012 Lisa Hacker talk contribs deleted page Characteristics of the Exponential Distribution (content was: 'As mentioned before, the primary trait of the exponential distribution is that it is used for modeling the behavior of items with a constant failure rate.…' (and the only contributor was 'Steve Sharp'))
19:22, 7 June 2012 Lisa Hacker talk contribs deleted page Weibull Statistical Properties (content was: '== The Mean or MTTF == The mean, <math> \overline{T} \,\!</math>, (also called ''MTTF'' of the Weibull ''pdf'' is given by: :::<math> \overline{T}=\gam…' (and the only contributor was 'Steve Sharp'))
19:22, 7 June 2012 Lisa Hacker talk contribs deleted page Newer Confidence Bounds (content was: '===What are Confidence Bounds?=== One of the most confusing concepts to a novice reliability engineer is estimating the precision of an estimate. This is …' (and the only contributor was 'Steve Sharp'))
19:22, 7 June 2012 Lisa Hacker talk contribs deleted page The Mode Function (content was: 'The modal (or mode) life, is the maximum value of <math>T</math> that satisfies: ::<math>\frac{d\left[ f(t) \right]}{dt}=0</math> For a continuous dis…' (and the only contributor was 'Steve Sharp'))
19:21, 7 June 2012 Lisa Hacker talk contribs deleted page References (content was: '==See Also== {{Template:Font|See Also|14|tahoma|bold|blue}} ==Notes== {{Template:Font|Notes|14|tahoma|bold|blue}}' (and the only contributor was 'Steve Sharp'))
19:19, 7 June 2012 Lisa Hacker talk contribs deleted page New10 Complex Competing Failure Modes (content was: 'In addition to being viewed as a series system, the relationship between the different competing failures modes can be more complex. After performing sepa…' (and the only contributor was 'Steve Sharp'))
19:19, 7 June 2012 Lisa Hacker talk contribs deleted page New5 Confidence Bounds (content was: 'This section presents the method used by the application to estimate the different types of confidence bounds for data that follow the Gumbel distribution…' (and the only contributor was 'Steve Sharp'))
19:17, 7 June 2012 Lisa Hacker talk contribs deleted page Solution to Example 16 (content was: 'After entering the Example 15's data sets into two different folios (or data sheets within the same folio) and analyzing them (in this case, the two data …' (and the only contributor was 'Steve Sharp'))
19:17, 7 June 2012 Lisa Hacker talk contribs deleted page New Difference Detection Matrix (content was: 'The Difference Detection Matrix is used to graphically indicate the amount of test time required to detect a statistically significant difference in the m…' (and the only contributor was 'Steve Sharp'))
19:16, 7 June 2012 Lisa Hacker talk contribs deleted page Example = With Prior Information from Subsystem Tests (content was: 'Given prior information from subsystem tests, the system reliability can be estimated. Assume a system of interest is composed of 3 subsystems A, B and C.…' (and the only contributor was 'Steve Sharp'))
19:15, 7 June 2012 Lisa Hacker talk contribs deleted page Modifications and Enhancements (content was: 'This reference has been updated and enhanced since the last major printing to include a discussion of the principles and theory behind the new functionali…' (and the only contributor was 'Steve Sharp'))
19:15, 7 June 2012 Lisa Hacker talk contribs deleted page About This Reference (content was: 'This reference is one in a series of reliability engineering reference works created by ReliaSoft. Some concepts and examples related to life data analysi…' (and the only contributor was 'Steve Sharp'))
19:15, 7 June 2012 Lisa Hacker talk contribs deleted page New Foreword (content was: 'Traditional life data analysis involves analyzing times-to-failure data (of a product, system or component) obtained under normal operating conditions in…' (and the only contributor was 'Steve Sharp'))
19:14, 7 June 2012 Lisa Hacker talk contribs deleted page Data and Data Types (content was: 'The analysis of accelerated life tests relies extensively on data. Specifically, analysis relies on life and stress data or times-to-failure data at a spe…' (and the only contributor was 'Steve Sharp'))
19:14, 7 June 2012 Lisa Hacker talk contribs deleted page New Residual Plots (content was: 'Residual analysis for reliability consists of analyzing the results of a regression analysis by assigning residual values to each data point in the data set. Plotting these residuals provides a very good tool in assessing model assumptio…')
19:13, 7 June 2012 Lisa Hacker talk contribs deleted page New11 Parameter Estimation (content was: 'The parameter of the exponential distribution can be estimated graphically on probability plotting paper or analytically using either least squares or max…' (and the only contributor was 'Steve Sharp'))
19:13, 7 June 2012 Lisa Hacker talk contribs deleted page Acceleration Factor (content was: 'Most practitioners use the term acceleration factor to refer to the ratio of the life (or acceleration characteristic) between the use level and a higher …' (and the only contributor was 'Steve Sharp'))
19:13, 7 June 2012 Lisa Hacker talk contribs deleted page Example (content was: 'Consider the following times-to-failure data at three different stress levels. center The data set was analyzed jointly and with a complete MLE solution over the entire data set, using…')
19:10, 7 June 2012 Lisa Hacker talk contribs deleted page New13 Acceleration Factor (content was: 'For the Eyring model the acceleration factor is given by: ::<math>{{A}_{F}}=\frac{{{L}_{USE}}}{{{L}_{Accelerated}}}=\frac{\tfrac{1}{{{V}_{u}}}\text{…' (and the only contributor was 'Steve Sharp'))
19:10, 7 June 2012 Lisa Hacker talk contribs deleted page New13 Example (content was: 'Consider the following times-to-failure data at three different stress levels. center The data se…' (and the only contributor was 'Steve Sharp'))
19:10, 7 June 2012 Lisa Hacker talk contribs deleted page Appendix 7A: Eyring Confidence Bounds (content was: '==Approximate Confidence Bounds for the Eyring-Exponential== ===Confidence Bounds on Mean Life=== The mean life for the Eyring relationship l i…' (and the only contributor was 'Steve Sharp'))
19:10, 7 June 2012 Lisa Hacker talk contribs deleted page New14 Example 1 (content was: 'Consider the following times-to-failure data at two different stress levels. center The data set was analy…' (and the only contributor was 'Steve Sharp'))
19:09, 7 June 2012 Lisa Hacker talk contribs deleted page A Look at the Parameters Phi and b (content was: 'Depending on which stress type is kept constant, it can be seen from Eqn. (ln Temp-Hum) that either the parameter <math>\phi </math> or the parameter <…' (and the only contributor was 'Steve Sharp'))
19:09, 7 June 2012 Lisa Hacker talk contribs deleted page T-H Data (content was: 'When using the T-H relationship, the effect of both temperature and humidity on life is sought. For this reason, the test must be performed in a combinati…' (and the only contributor was 'Steve Sharp'))
19:09, 7 June 2012 Lisa Hacker talk contribs deleted page Appendix 9A: T-H Confidence Bounds (content was: '==Approximate Confidence Bounds for the T-H Exponential== ===Confidence Bounds on the Mean Life=== The mean life for the T-H exponential distrib…' (and the only contributor was 'Steve Sharp'))
19:09, 7 June 2012 Lisa Hacker talk contribs deleted page A Look at the Parameters B and n (content was: 'Depending on which stress type is kept constant, it can be seen from Eqns. (ln Temp) and (ln Hum) that either the parameter <math>B</math> or the parame…' (and the only contributor was 'Steve Sharp'))
19:08, 7 June 2012 Lisa Hacker talk contribs deleted page New17 Example (content was: 'Twelve electronic devices were put into a continuous accelerated test and the following data were collected. center …' (and the only contributor was 'Steve Sharp'))
19:08, 7 June 2012 Lisa Hacker talk contribs deleted page Appendix 10A: T-NT Confidence Bounds (content was: '==Approximate Confidence Bounds for the T-NT Exponential== ===Confidence Bounds on the Mean Life=== The mean life for the T-NT model is given by…' (and the only contributor was 'Steve Sharp'))

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