Electric heating – Inductive heating – With heat exchange
Patent
1994-08-05
1996-03-19
Leung, Philip H.
Electric heating
Inductive heating
With heat exchange
219634, 219759, 1562724, 1563802, H05B 610
Patent
active
055005110
ABSTRACT:
To obtain more uniform heating across the susceptor when welding composite parts using induction heating, we create edge regions of lower absolute impedance or a lower longitudinal impedance than the transverse impedance to counterbalance the higher current density and current that occurs near the edges. We achieve lower impedance at the edges by altering the aspect ratio (length/width) of openings in the susceptor, by folding the susceptor over onto itself, or both. Uniform heating is important to obtaining a uniform, consistent weld on which aerospace designers can rely.
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J. Giachino, Welding Skills and Practices, Am. Tech. Soc., Chicago, IL (1960,1965,1967,1971,1976) 393-401.
Hansen Karl A.
Lunden C. David
Hammar John C.
Leung Philip H.
The Boeing Company
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