Current Practice on Estimating Crack Growth Damage Accumulation with Specific Application to Structural Safety Durability and Reliability

Abstract

This report provides a brief summary of current practice on predicting crack growth damage accumulation with specific applications to current USAF policies on Safety and Durability. Analytical procedures are required to determine safe crack growth-life intervals and to estimate economic limits of crack growth. Reliability and risk analyses are discussed to illustrate their impact on structural decisions. The life prediction methodology will be examined to illustrate the major effects of the structural parameters (geometry), the material parameters (basic crack growth rate) and loading (usage patterns). Examples are cited to give indication of confidence in making life predictions. A summary of procedures for estimating service loads and chemical-thermal environments is included as they relate to simulating usage effects in the laboratory.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1976
Accession Number
ADA025499

Entities

People

  • Howard A. Wood
  • John M. Potter
  • Joseph Gallagher
  • Robert M. Engle

Organizations

  • Flight Dynamics Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Computer Programs
  • Databases
  • Fatigue Tests (Mechanics)
  • Fracture (Mechanics)
  • Geometry
  • Materials
  • Mechanics
  • Reliability
  • Risk
  • Risk Analysis
  • Structural Integrity
  • Structural Properties
  • Test And Evaluation
  • Transport Aircraft

Readers

  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design