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Finding Brazing Voids by HolographyVibration-induced interference fringes reveal locations of defects. Holographic apparatus used to view object while vibrated ultrasonically. Interference fringes in hologram reveal brazing defects. Holographic technique locates small voids in large brazed joints. Identifies unbrazed regions 1 in. to second power (6 cm to the second power) or less in area.
Document ID
19860000087
Document Type
Other - NASA Tech Brief
Authors
Galluccio, R. (United Technologies Corp.)
Date Acquired
August 12, 2013
Publication Date
June 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 1
ISSN: 0145-319X
Subject Category
FABRICATION TECHNOLOGY
Report/Patent Number
MSC-20495
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.