Modeling of GMA weld pools with consideration of droplet impact
Article Abstract:
A 3-D weld pool model for analyzing the fluid mechanics and thermodynamics during gas metal arc welding is presented. The model takes into account the droplet heat content and impact force in analyzing the effect of droplets on the weld pool formation. The arc pressure and droplet impact force were considered in calculating for the surface deformation of the weld pool. The results obtained from the model were found to agree well with experimental results.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1998
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Upsetting of cylinders: a comparison of two different damage indicators
Article Abstract:
Hancock-Mackenzie-Gunawardena and Atkins has proposed two damage indicators for ductile failure are compared with experimental results from literature for the upsetting process of cylindrical specimens. The study are expected to serve as a practical guideline for the choice of a suitable damage indicator in the simulation of forming processes even when no experimental results of the respective process exist for a validation of the indicator.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2001
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Design and operation of a droplet deposition system for freeform fabrication of metal parts
Article Abstract:
A droplet generator is designed and built to make wax and tin alloy droplets for freeform fabrication. Operating at the optimal frequency is recommended, because it not only produces more uniform droplets but also shortens the time and distance for forming the droplets and in turn, increases the overall productivity.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2001
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