A Crack Growth Gage for Assessing Flaw Growth Potential in Structural Components

Abstract

A new concept for monitoring the potential for damage accumulation in structural materials is presented. Briefly, the method proposed is to install a preflawed gage on a critical component and to monitor its flaw growth nondestructively. The relationship between this flaw size and the potential flaw in the structure is derived using linear elastic fracture mechanics principles. Experimental flaw growth data produced by an aircraft spectrum was used to demonstrate the validity of a degenerate case of this concept. A discussion is also presented to show how this method could be implemented in fulfillment of the Mil-Std-1530 requirement to track potential flaw growth.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1976
Accession Number
ADA033574

Entities

People

  • A. F. Grandt
  • J. P. Gallagher
  • R. L. Crane

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Airframes
  • Composite Materials
  • Composite Structures
  • Fracture (Mechanics)
  • Government Procurement
  • Governments
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Mechanics
  • Modulus Of Elasticity
  • Monitoring
  • Security
  • Structural Components

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Software Engineering
  • Structural Health Monitoring of Composite Structures.