Fatigue Evaluation of Auto-TIG Weld Joints for Heat Exchanger Applications.

Abstract

Fatigue tests were performed to compare the dynamic load response of auto-TIG step pulse welds with currently used manual electric arc welds in heat exchanger joint applications. The new auto-TIG weld technique for fabricating the joints, designed by Naval Ship Engineering Center, Philadelphia Division has been shown to be more time and cost effective. Full-scale joints were used to test specimens representing the heat exchanger cooling tube to end wall assembly and consisted of a 2.25 Cr - 1.0 Mo heat resistant steel tube of 3.18 cm (1.25 in.) outside diameter welded to a 1.25 Cr - 1.0 Mo end wall section containing an oversized 3.18 cm (1.25 in.) diameter hole.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1977
Accession Number
ADA041679

Entities

People

  • J. J. Bethke

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Cyclic Loads
  • Diameters
  • Dynamic Loads
  • Electric Arcs
  • Engineering
  • Fatigue Tests (Mechanics)
  • Heat Exchangers
  • Joints
  • Materials
  • Mechanical Properties
  • Stress Tests
  • Stresses
  • Test And Evaluation
  • Wave Functions
  • Welded Joints
  • Welds

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