Reliability Index Versus Safety Factor of Structures.

Abstract

In measuring structural safety, the reliability index concept is, by far, more explicit than the usual safety factor. The probabilistic reliability index incorporates uncertainty of member load and capacity into a comprehensive model, while the deterministic safety factor is normally the ratio of the two. The result, B, provides the engineer with a probability of failure, independent of the design criteria. The probabilistic method is especially useful in determining reliability under overload conditions; it also provides a transition between the Allowable Stress Design (A SD) mentality and the Load & Resistance Factor Design (LRFD) process. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1995
Accession Number
ADA296558

Entities

People

  • R. B. Wilshusen

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Blood Coagulation Factors
  • Civil Engineering
  • Construction
  • Damage Assessment
  • Elastic Properties
  • Engineering
  • Engineers
  • Failure Mode And Effect Analysis
  • Materials
  • Mechanics
  • Probabilistic Models
  • Probability
  • Random Variables
  • Structural Analysis
  • Structural Engineering
  • Structural Mechanics
  • Yield Strength

Fields of Study

  • Engineering

Readers

  • Aviation Safety Risk Assessment.
  • Regression Analysis.
  • Structural Health Monitoring of Composite Structures.