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a) The heat energy generated at the source b) The minimum current level required in this operation c) Assuming the heat transfer factor is 0.9, what would the melting factor be? d) The power density of the process, and comment on the value.

a) The heat energy generated at the source b) The minimum current level required in this operation c) Assuming the heat transfer factor is 0.9, what would the melting factor be? d) The power density of the process, and comment on the value.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The below Figure Q1 shows an aluminium alloy sheet metal requires to be spot welded. In order

for the weld to achieve its required strength, it has to be 2mm thick and the weld duration will be

set at 0.3 sec. If it is assumed that the electrical resistance between the surfaces is 160 micro-ohms,

and that only 40% of the electrical energy generated will be used to form the weld nugget (the rest

being dissipated into the work), determine:

  1. a) The heat energy generated at the source
  2. b) The minimum current level required in this operation
  3. c) Assuming the heat transfer factor is 0.9, what would the melting factor be?
  4. d) The power density of the process, and comment on the value.
100 38 38 55 Ø10.4 Spacer Figure Q1 (All dimensions in mm)
Transcribed Image Text:100 38 38 55 Ø10.4 Spacer Figure Q1 (All dimensions in mm)
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