Ultrasonic Inspection and Fatigue Evaluation of Critical Pore Size in Welds.

Abstract

Controlled amounts of weld porosity were introduced into double-vee butt weld joints of low-alloy, high strength structural steel using a gas metal arc weld method. The weld zones were inspected radiographically and ultrasonically to detect and classify porosity severity. Subsequent uniaxial fatigue tests indicated that mean fatigue life of 'water clear' weld was superior to the mean fatigue life of weldments of all pore sizes. Fracture toughness (KIC) as measured by Charpy impact under dynamic loading was noted to improve with weld specimens containing fine pores (0.024 inch diameter and under).

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1981
Accession Number
ADA124668

Entities

People

  • Clarence J. Carter
  • John J. Connelly
  • Raymond A. Cellitti

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Frequency
  • Illinois
  • Inspection
  • Materials
  • Materials Testing
  • Measurement
  • Mechanics
  • Military Research
  • Test And Evaluation
  • Test Methods
  • Toughness
  • Ultrasonic Inspection
  • United States
  • Welds

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy