Tools for Structural Reliability Analysis

A variety of tools useful for performing structural reliability analysis, such as with structure function and system signatures. Plans to expand more widely.

Project Status: Active - The project has reached a stable, usable state and is being actively developed. license metacran version metacran downloads CRAN check result

The ReliabilityTheory package provides a variety of tools useful for performing structural reliability analysis, such as when using the structure function, system signature or survival signature.


Please feel free to:


You can install the latest release directly from CRAN.


Install development version (not recommended)

Installing directly from GitHub is not supported by the install.packages command. You could use the devtools package to install the development version if desired.


Under releases, the tree/commit from which CRAN releases were made are recorded, so historic source can be downloaded from there.


If you use this software, please cite one of the following:

Aslett, L. J. M. (2012), ReliabilityTheory: Tools for structural reliability analysis. R package,

Aslett, L. J. M. (2012), MCMC for Inference on Phase-type and Masked System Lifetime Models, PhD thesis, Trinity College Dublin.



ReliabilityTheory 0.1.5

  • Fix bug in minimal s-t vertex separation code (thanks to Alexis van Lennep for the bug report)

ReliabilityTheory 0.1.4

  • Fix bug when naming of component types in survival signature is discordant with component order
  • Fix bug when using survival signature with only one component type
  • Updated contact details
  • PDF manual should no longer have truncated lines

ReliabilityTheory 0.1.1

  • Fix edge case bug in cut set computation
  • New function to compute survival signature

ReliabilityTheory 0.1.0

  • First public release

Reference manual

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0.1.5 by Louis Aslett, 4 years ago

Browse source code at

Authors: Louis Aslett <[email protected]>

Documentation:   PDF Manual  

GPL-2 | GPL-3 license

Imports sfsmisc, combinat, FRACTION, mcmc, PhaseType, actuar, HI

Depends on igraph

Suggests testthat

See at CRAN