Flaw Growth in Complex Structure. Volume 1. Technical Discussion

Abstract

Fatigue crack growth testing and analysis were conducted to evaluate the effects of initial flaw location and multiplicity on fatigue crack growth life and element failure sequence in multiple element, mechanically fastened metallic structure. The test program, which included 68 precracked structural specimens consisting of 26 joints and 42 stringer-reinforced panels, is described in detail. Stress intensity factor analyses and stress severity factor equations and the results of baseline static, fatigue, crack growth, and fracture tests are presented for use in making crack growth predictions for the structural specimens. Procedures are described for machining, precracking, assembling and testing the structural specimens. The test results and corresponding analytical results are presented and compared.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA056372

Entities

People

  • M. Creager
  • S. T. Chiu
  • T. R. Brussat

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aircrafts
  • Assembly
  • Blood Coagulation Factors
  • Engineering
  • Fabrication
  • Factor Analysis
  • Fatigue Tests (Mechanics)
  • Finite Element Analysis
  • Manufacturing
  • Materials
  • Mathematical Analysis
  • Mechanical Working
  • Mechanics
  • Plastic Explosives
  • Two Dimensional

Readers

  • Software Engineering
  • Structural Health Monitoring of Composite Structures.