Apparatus and method for automatic evaluation of a bond created

Details Apparatus and method for automatic evaluation of a bond created Apparatus and method for automatic evaluation of a bond created

1982-08-24

1986-08-19

Godici, Nicholas P.

Metal fusion bonding

Process

With measuring, testing, indicating, inspecting, or...

228110, 228 11, 364477, B23K 2102

Patent

active

046064907

ABSTRACT:
Apparatus and method for determining if a lead bond created by an ultrasonic transducer has the characteristics of a good bond. The current supplied to the transducer is monitored and the envelope of the supplied current is sampled periodically and supplied to a computing means. The computing compares selected characteristics of the sampled signal with characteristics previously determined to create good lead bonding. The results of this comparison are stored in a bond quality control data processing system and supplied to a host data processing system. The host data processing system can take appropriate action. The bond quality control data processing system can control the power supplied to the ultrasonic transducer to provide better characteristics.

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Automatic Welding, (Great Britain), vol. 34, No. 5, May 1981, pp. 31-33, Kozich et al., "An Analysis of Systems for the Active Inspection of Ultrasonic Micro-Welded Joints".

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