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WeibullNEWS™

The Latest in Life Data Analysis Technology
From: Dr. Bob Abernethy and Wes Fulton

WeibullNews™, published by Dr. Robert B. Abernethy and Wes Fulton, is a periodic newsletter concerning Weibull analysis. The newsletter provides the latest information regarding life data analysis technology for reliability data. The highlights include new events and activities concerning Weibull analysis and related techniques. You can download back issues of WeibullNEWS as PDF files.

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Issue 18, Spring 2004

Weibull Users Conference, failure detection, six sigma, Weibull Workshop, Log normal Workshop, improvements in WinSMITH Weibull and WinSMITH Visual, Crow-AMSAA, C-A, IEC 61710, Crow-AMSAA plots, when to use Weibull data, when to use Crow-AMSAA data, historical Weibull documents, A Statistical Theory Of The Strength Of Materials, Gossett

Issue 17, Summer 2003

Accelerated testing, Crow/AMSAA prediction of future failures, Dr. Bob replies to E-mail questions, MLE, new methods for life data analysis-a management overview, process reliability, RBA, small samples, step-stress testing, warranty forecasting, Weibull analysis best practices flow chart, Weibull, Weibull library

Issue 16, Winter 2001

3D likelihood surface, accelerated testing, Crow/AMSAA, Crow/AMSAA critical correlation coefficient, extreme value type 1 (Gumbel), extreme value type 3 (Weibull), failure forecasting, Gumbel lower, Gumbel upper, Kaplan-Meier, MLE-RBA, pivotal confidence (pv), warranty claims forecasting, Vasan-Fulton former usage ration (ratio between laboratory test time and the equivalent actual in-service usage time), WeiBayes, Weibull

Issue 15, Summer 1999

Aggregated cumulated hazard function (ACH), AMSAA model, batch effects, batch automated processing, Crow-AMSAA, failure forecast, language icon, parameter as function of engineering variable (PFEV), probabilistic S/N curve, process reliability, WeiBayes, Weibull

Issue 14, Spring 1999

Accelerated testing, ACH, C4 factor, design comparison, maximum likelihood estimates, median rank regression, production process reliability, RBA factor, reduced bias adjustment (RBA) factor, risk analysis, Student’s t, test requirements, Weibull

Issue 13, Fall 1998

Accelerated testing, batch problems, Crow-AMSAA, MLE, failure forecasting, Kaplan-Meier, languages, mixture analysis, regression X on Y versus Y on X, Monte Carlo confidence bounds, pivotal confidence intervals, warranty analysis, Weibull

Issue 12, Fall 1997

Accelerated test, BiWeibull, confidence limits, CDF (cumulative distribution function), Duane-AMSAA, goodness of fit, Hazen’s rank, P value, Johnson’s Beta-Binomial, Kaplan-Meier, Lawless’s Likelihood Ratio, mixtures, mean rank, median rank, Monte Carlo, MTBF, Nelson’s Fisher’s Incomplete Matrix, PDF (probability density function), renewal, TriWeibull, warranty data, Weibull

Issue 11, Winter 1996

B10, Benard’s plotting position, beta-binomial median ranks plotting position, CDF, confidence bounds, Duane-AMSAA plots, mean rank plotting position, Nelson’s plotting positions, PDF, Weibull

Issue 10, Spring 1996

B life method, confidence bounds, likelihood ratio (LR), Weibayes methods, likelihood contour plots, significant differences, Weibull

Issue 9, Fall 1995

Critical correlation coefficient, data sets different?, goodness of fit, Kaplan-Meir, Monte Carlo, MLE, p-values, regression, substantiation tests, Weibull

Issue 8, Fall 1994

Confidence intervals, Fisher matrix, Greenwood’s estimate, Kaplan-Meier, MLE, survival function, suspensions, warranty data, Weibull

Issue 7, Fall 1993

CDF, confidence methods, goodness of fit, optimal replacement, PDF, sudden death, test methods, test plans, failure forecast, risk forecast, renewal, three parameter Weibull, Weibayes, Weibull

Issue 6, Summer 1992

Calibration intervals, confidence bounds, confidence intervals, distributional analysis, likelihood function, likelihood ratio, median estimates, Monte Carlo, three parameter correction (t0), WeiBayes, Weibull, Weibull risk

Issue 5, Fall 1991

Assurance index, confidence, critical correlation coefficient, Fisher’s incomplete matrix, goodness of fit, likelihood ratio, log-normal, Monte Carlo, suspensions, Weibull

Issue 4, Spring 1991

Binomial, Duane-AMSAA, inspection data, Monte Carlo simulation, probit, risk analysis, Weibull

Issue 3, Summer 1990

Log normal, Weibull

Issue 2, Spring 1989

Binomial reliability, correlation coefficient, inspection, log normal, Weibull

Issue 1, Summer 1989

Binomial confidence, central limit, confidence limits, Duane-AMSAA, exponential, Monte Carlo, reliability growth, test plans, Weibull

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