Evaluation of the -S/N- Fatigue Life Gage under Constant and Variable Amplitude Loading,

Abstract

An experimental program was conducted to evaluate the -S/N- Fatigue Life Gage and a number of gage installations was evaluated for constant and variable amplitude loading. The test results demonstrated that while there was a qualitative relation between gage resistance change and specimen life expended, a usable quantitative correlation was not attainable. Test results also proved that the fraction of specimen life to initial detectable crack was a better indicator of the time for retirement of a structure than was the fatigue life gage, although no estimate of the damage incurred can be obtained prior to crack detection.

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Document Details

Document Type
Technical Report
Publication Date
Sep 05, 1972
Accession Number
ADA326074

Entities

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Detection
  • Detectors
  • Engineering
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Materials
  • Measurement
  • Mechanics
  • Plastic Explosives
  • Stress Concentration
  • Test And Evaluation
  • Test Equipment
  • Test Methods
  • Three Dimensional

Readers

  • Fluid Dynamics.
  • Life Cycle Cost Analysis
  • Materials Science (Mechanical Engineering).