Fatigue Reliability Method with In-Service Inspections.

Abstract

The first order reliability method (FORM) has traditionally been applied to probabilistic fatigue analyses for single inspection intervals. Accounting for inspections then requires several sequential FORM analyses and that the random distribution of crack lengths be recharacterized following each inspection. The augmented FORM presented here allows the reliability analyses to span several inspection periods without explicit characterization of the crack length distribution subsequent to each inspection. The method thereby preserves the attractive feature of FORM in that relatively few realizations in the random variable space need to be considered. Examples are given which show that the present methodology gives estimates which are in good agreement with the Monte Carlo simulations and is efficient even for complex components. (KAR) P. 3

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1995
Accession Number
ADA295795

Entities

People

  • B. Moran
  • H. Harkness
  • M. Fleming
  • T. Belytschko

Organizations

  • Northwestern University

Tags

DTIC Thesaurus Topics

  • Accounting
  • Agreements
  • Data Science
  • Information Science
  • Inspection
  • Intervals
  • Mathematics
  • Monte Carlo Method
  • Random Variables
  • Reliability
  • Simulations

Readers

  • Approximation Theory.
  • Computer Vision.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space