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Effective Visual Criteria for Welded Interconnections
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English
Abstract
One of the most critical aspects affecting the ultimate reliability of welded interconnections is the lack of meaningful visual criteria for crosswire joints. In recognition of this, Autonetics has undertaken a comprehensive program to establish the correlation between visual characteristics and metallurgical and mechanical properties of specific wire combinations.
Significant numbers of welded interconnections were made using 25 wire combinations and employing welding parameters that would produce cold, typical, and overheated welds. The welded joints were critically examined and classified with regard to useful visual characteristics such as embedment, indentation, filleting, bulging, expulsion, pitting, surface fusion, cracks and voids. Also, metallographic studies were conducted to determine the relationship between internal conditions and joint integrity.
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Authors
Citation
Bryant, R. and Bester, M., "Effective Visual Criteria for Welded Interconnections," SAE Technical Paper 670220, 1967, https://doi.org/10.4271/670220.Also In
References
- “Welding, Resistance, Electronic Circuit Modules,” MIL-W-8939 (ASG)
- National Aeronautics and Space Administration Standard “Fabrication of Welded Electronic Modules,” MSFC-STD-271
- “Welding for Electronic Assemblies,” NASA SP-5011 November 1964
- Andre J. M. “Cross-Wire Resistance Welds -Visual Inspection and Quality Control,” Hughes Aircraft Company March 1962