ALTopt - Optimal Experimental Designs for Accelerated Life Testing
Creates the optimal (D, U and I) designs for the
accelerated life testing with right censoring or interval
censoring. It uses generalized linear model (GLM) approach to
derive the asymptotic variance-covariance matrix of regression
coefficients. The failure time distribution is assumed to
follow Weibull distribution with a known shape parameter and
log-linear link functions are used to model the relationship
between failure time parameters and stress variables. The
acceleration model may have multiple stress factors, although
most ALTs involve only two or less stress factors. ALTopt
package also provides several plotting functions including
contour plot, Fraction of Use Space (FUS) plot and Variance
Dispersion graphs of Use Space (VDUS) plot. For more details,
see Seo and Pan (2015) <doi:10.32614/RJ-2015-029>.