J-Integral Testing of Aluminum Alloys: A New Technique for Marking Crack Fronts.

Abstract

An important aspect of the standardized J1C test method is the measurement of the amount of crack extension as a function of load. The usual method of marking crack fronts for subsequent measurement in aluminium alloys is to fatigue cycle after inital static crack extension. In this paper, a new technique for marking crack fronts in aluminium alloys is described. This new technique, based on liquid metal embrittlement of grain boundaries in aluminium by gallium, is, for the alloys examined in this work, a more effective method of crack front marking than fatigue cycling.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA173952

Entities

People

  • P. W. Beaver

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aircraft Industry
  • Aircrafts
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Diffusion Coefficient
  • Engineering
  • Failure Mode And Effect Analysis
  • Geometry
  • Grain Boundaries
  • J Integrals
  • Liquid Metals
  • Materials
  • Mechanical Properties
  • Mechanics
  • Test Methods

Readers

  • Materials Science (Mechanical Engineering).

Technology Areas

  • Microelectronics