Mechanics of Widespread Fatigue Damage & Life Enhancement Methodologies for Aging Aerospace Structures.

Abstract

The major aircraft structural situation considered in this research is that of a thin skin stiffened by orthogonal frames and stringers, with the possibility of a lap joint. Effects on this situation considered in this research are: (1) impact by foreign objects, (2) fatigue damage due to repetitive loading, and (3) corrosion damage. Various theoretical models, pertaining to the response of the subject aircraft structure to these effects, have been considered: (1) the Finite Element Alternating Method (FEAM) applied to a single crack, (2) FEAM applied to Multiple Site Damage (MSD), and others. An analysis is also presented which pertains to the repair of cracks by application of a composite patch using adhesive.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1997
Accession Number
ADA329633

Entities

People

  • Satya N. Atluri

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aircraft Industry
  • Aircrafts
  • Commercial Aircraft
  • Computational Fluid Dynamics
  • Computational Science
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Fuselages
  • Materials
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Stress Strain Relations
  • Three Dimensional
  • Two Dimensional
  • Yield Strength

Readers

  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space