ANALYSIS OF TWO DIMENSIONAL THERMAL STRAINS AND METAL MOVEMENT DURING WELDING

The strain response of metal plates during welding is discussed and current state-of-the-art efforts to analyze the phenomena are reviewed. Mechanical and physical temperature dependent properties; transient strain and temperature distribution data obtained from experiments on 6061 aluminum alloy in the T651 condition; and a data reduction computer program are presented. The experiments were designed to look at the macroscopic effects of welding upon heat treatable age hardened alloys while at the same time approximating ship structural weldments. The transient strain response was found to be predominantly longitudinal but transverse strains were significant in the region of the welding arc. It was also found that residual strains correlated reasonably between similar experiments with a variation of the second stress deviator tensor invariant J sub 2 representing the "state of stress" rather than by individual strain components. Several recommendations are made concerning continued experimental investigation aimed at further development of the National Aeronautics and Space Administration programs.

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Ocean Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Bryan, J J
• Publication Date: 1973-5

Subject/Index Terms

• TRT Terms: Aluminum; Defects; Quality control; Shipbuilding; Stresses; Thermal stresses; Welding; Welds
• Uncontrolled Terms: Aluminum welding; Weld defects
• Old TRIS Terms: Ship construction quality control; Weld stresses
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00048360
• Record Type: Publication
• Source Agency: Massachusetts Institute of Technology
• Report/Paper Numbers: MS Thesis
• Files: TRIS
• Created Date: Nov 14 1976 12:00AM