A random-fuzzy analysis of existing structures

Achintya Haldar, Rajasekhar K. Reddy

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Two approaches are proposed to estimate the reliability of existing structures by considering both the randomness in some of the design parameters and the fuzzy imprecision in some other parameters representing the in-place condition of the aged structures. In the first approach, the fuzzy imprecision is transformed into random uncertainty using the entropy concept, and the reliability of existing structures is estimated using well-established theories of probability. In the second approach, a hybrid approach in the random-fuzzy domain is used to evaluate the reliability using an α-level concept. The multiple fuzzy variables case is also considered. Both discrete and continuous fuzzy variables are considered. The results obtained from the proposed approaches are compared with other techniques available in the literature whenever possible. Both methods are applied to civil structural engineering problems in this paper. The results obtained are very encouraging and demonstrate the applicability and robustness of the algorithms.

Original languageEnglish (US)
Pages (from-to)201-210
Number of pages10
JournalFuzzy Sets and Systems
Volume48
Issue number2
DOIs
StatePublished - Jun 10 1992

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Fuzzy Variable
Imprecision
Continuous Variables
Hybrid Approach
Civil engineering
Parameter Design
Structural design
Randomness
Entropy
Robustness
Engineering
Uncertainty
Evaluate
Estimate
Demonstrate
Concepts

Keywords

  • analysis
  • engineering
  • linguistic modeling
  • Measure of fuzziness
  • probability theory and statistics

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Computer Vision and Pattern Recognition
  • Information Systems and Management
  • Statistics, Probability and Uncertainty
  • Electrical and Electronic Engineering
  • Statistics and Probability

Cite this

A random-fuzzy analysis of existing structures. / Haldar, Achintya; Reddy, Rajasekhar K.

In: Fuzzy Sets and Systems, Vol. 48, No. 2, 10.06.1992, p. 201-210.

Research output: Contribution to journalArticle

Haldar, Achintya ; Reddy, Rajasekhar K. / A random-fuzzy analysis of existing structures. In: Fuzzy Sets and Systems. 1992 ; Vol. 48, No. 2. pp. 201-210.
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