Function that returns the average for each time-temperature batch.
● Data Source:
CranContrib
● Keywords:
● Alias: addt.mean.summary
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Accelerated destructive degradation tests (ADDT) are often used to collect necessary data for assessing the long-term properties of polymeric materials. Based on the collected data, a thermal index (TI) is estimated. The TI can be useful for material rating and comparison. This package performs the least squares (LS) and maximum likelihood (ML) procedures for estimating TI for polymeric materials. The LS approach is a two-step approach that is currently used in industrial standards, while the ML procedure is widely used in the statistical literature. The ML approach allows one to do statistical inference such as quantifying uncertainties in estimation, hypothesis testing, and predictions. Two publicly available datasets are provided to allow users to experiment and practice with the functions.
● Data Source:
CranContrib
● Keywords: package
● Alias: ADDT, ADDT-package
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Performs the least squares and maximum likelihood procedures for calculating thermal indices (TI) for polymeric materials.
● Data Source:
CranContrib
● Keywords:
● Alias: addt.fit
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Provides graphical tools for ADDT analysis.
● Data Source:
CranContrib
● Keywords:
● Alias: plot.addt.fit
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A dataset from Escobar et al. (2003) containing the results of an accelerated destructive degradation testing on the strength of an adhesive bond.
● Data Source:
CranContrib
● Keywords:
● Alias: AdhesiveBondB
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Provides a brief summary of an addt.fit object.
● Data Source:
CranContrib
● Keywords:
● Alias: summary.addt.fit
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Seal Strength dataset presented in Li and Doganaksoy (2014).
● Data Source:
CranContrib
● Keywords:
● Alias: SealStrength
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Given observations for one temperature level up to some time point, computes a prediction interval for the mean degradation level at some future time point.
● Data Source:
CranContrib
● Keywords:
● Alias: addt.predint.ybar.mle
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Computes a confidence interval for the TI estimate.
● Data Source:
CranContrib
● Keywords:
● Alias: addt.confint.ti.mle
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