Data Controller System for Fatigue Crack Monitoring Using a Potential Drop Technique.

Abstract

This report describes the design of a control unit to interface with (1) a digital voltmeter calibrated to respond to fatigue crack growth, (2) load and cycle data from a servo hydraulic system, and (3) a desk calculator. The calculator is programmed to determine crack length, crack growth rate and stress intensity factors. Pre-set limits on the load and number of cycles permits termination of the test when the levels have been exceeded. Appropriate power supplies for the units have also been designed and are described. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1979
Accession Number
ADA090953

Entities

People

  • Barry J. Baxter

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Australia
  • Calculators
  • Circuit Boards
  • Circuits
  • Control Systems
  • Crack Tips
  • Engineering
  • Intensity
  • Materials
  • Materials Testing
  • Measurement
  • Munitions
  • Power Supplies
  • Printed Circuits
  • Security
  • Stress Intensity Factors
  • Stresses

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science (Mechanical Engineering).