# ADDT: A Package for Analysis of Accelerated Destructive Degradation Test Data

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.

- Author
- Yili Hong, Yimeng Xie, and Caleb King
- Date of publication
- 2014-09-26 07:55:35
- Maintainer
- Yili Hong <yilihong@vt.edu>
- License
- GPL-2
- Version
- 1.0

## Man pages

- addt.confint.ti.mle
- Confidence Interval for Thermal Index (TI) Estimate.
- addt.confint.ti.mle
- Confidence Interval for Thermal Index (TI) Estimate.
- addt.fit
- ADDT Model Fitting
- addt.fit
- ADDT Model Fitting
- addt.mean.summary
- ADDT Batch Means Summary
- addt.mean.summary
- ADDT Batch Means Summary
- ADDT-package
- Accelerated Destructive Degradation Testing
- ADDT-package
- Accelerated Destructive Degradation Testing
- addt.predint.ybar.mle
- Prediction of the mean of future observations
- addt.predint.ybar.mle
- Prediction of the mean of future observations
- AdhesiveBondB
- Adhesive Bond B dataset
- AdhesiveBondB
- Adhesive Bond B dataset
- plot.addt.fit
- ADDT Plotting
- plot.addt.fit
- ADDT Plotting
- SealStrength
- Data for Seal Strength
- SealStrength
- Data for Seal Strength
- summary.addt.fit
- Summary of an "addt.fit" object.
- summary.addt.fit
- Summary of an "addt.fit" object.

## Files in this package

ADDT |

ADDT/NAMESPACE |

ADDT/data |

ADDT/data/AdhesiveBondB.rda |

ADDT/data/SealStrength.rda |

ADDT/R |

ADDT/R/ADDT-package.R |

ADDT/MD5 |

ADDT/DESCRIPTION |

ADDT/man |

ADDT/man/addt.mean.summary.Rd |

ADDT/man/ADDT-package.Rd |

ADDT/man/addt.fit.Rd |

ADDT/man/plot.addt.fit.Rd |

ADDT/man/AdhesiveBondB.Rd |

ADDT/man/summary.addt.fit.Rd |

ADDT/man/SealStrength.Rd |

ADDT/man/addt.predint.ybar.mle.Rd |

ADDT/man/addt.confint.ti.mle.Rd |