ADDT
Analysis of Accelerated Destructive Degradation Test Data
Description
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 implements the traditional method based on the least-squares method, the parametric method based on maximum likelihood estimation, and the semiparametric method based on spline methods, and the corresponding methods for estimating TI for polymeric materials. The traditional approach is a two-step approach that is currently used in industrial standards, while the parametric method is widely used in the statistical literature. The semiparametric method is newly developed. Both the parametric and semiparametric approaches allow one to do statistical inference such as quantifying uncertainties in estimation, hypothesis testing, and predictions. Publicly available datasets are provided illustrations. More details can be found in Jin et al. (2017).
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| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-macos-arm64 | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (2 non-OK)
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
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Authors@R: c(person(given = "Yili",
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email = "yilihong@vt.edu"),
person(given = "Yimeng",
family = "Xie",
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person(given = "Zhongnan",
family = "Jin",
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person(given = "Caleb",
family = "King",
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CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
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Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
email = "yilihong@vt.edu"),
person(given = "Yimeng",
family = "Xie",
role = "aut"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
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Check History
NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 12, 2026
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
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Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
as necessary.
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
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Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
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WARNING 11 OK · 2 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE Mar 11, 2026
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
as necessary.
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
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R code for possible problems
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory shell-init: error ...[truncated]... file or directory shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
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Authors@R: c(person(given = "Yili",
family = "Hong",
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e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
as necessary.
CRAN incoming feasibility
Maintainer: ‘Yili Hong <yilihong@vt.edu>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Yili",
family = "Hong",
role = c("aut", "cre"),
e
...[truncated]...
t"),
person(given = "Zhongnan",
family = "Jin",
role = "aut"),
person(given = "Caleb",
family = "King",
role = "aut"))
as necessary.