The first-order reliability method, (FORM), is a semi-
probabilistic
Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, ...
reliability analysis
Reliability, reliable, or unreliable may refer to:
Science, technology, and mathematics Computing
* Data reliability (disambiguation), a property of some disk arrays in computer storage
* High availability
* Reliability (computer networking), a ...
method devised to evaluate the reliability of a system. The accuracy of the method can be improved by averaging over many samples, which is known as
Line Sampling.
The method is also known as the Hasofer-Lind Reliability Index, developed by Professor
Michael Hasofer
Abraham Michael Hasofer (1927-2010) was an Australian statistician. Professor Hasofer held the position of the Chair of Statistics within the Mathematics Department in the University of New South Wales in Sydney from 1969 to 1991. He subsequent ...
and Professor
Neil Lind
Neil is a masculine name of Gaelic and Irish origin. The name is an anglicisation of the Irish '' Niall'' which is of disputed derivation. The Irish name may be derived from words meaning "cloud", "passionate", "victory", "honour" or "champion".. ...
in 1974. The index has been recognized as an important step towards the development of contemporary methods to effectively and accurately estimate structural safety.
The analysis method depends on a "Most Probable Point" on the limit state
[C Annis]
"How FORM/SORM is Supposed to Work"
/ref>
See also
* EN 1990
En or EN may refer to:
Businesses
* Bouygues (stock symbol EN)
* Esquimalt and Nanaimo Railway (reporting mark EN, but now known as Southern Railway of Vancouver Island)
* Euronews, a news television and internet channel
Language and writing
* ...
* Fast probability integration Fast probability integration (FPI) is a method of determining the probability of a class of events, particularly a failure event, that is faster to execute than Monte Carlo analysis. It is used where large numbers of time-variant variables contrib ...
* Stress–strength analysis
Stress–strength analysis is the analysis of the strength of the materials and the interference of the stresses placed on the materials, where "materials" is not necessarily the raw goods or parts, but can be an entire system. Stress-Strength ...
References
Probabilistic models
Reliability engineering
{{engineering-stub