NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Optical Detection Of Fractures In Ceramic DiaphragmsSimple optical technique enables quick, nondestructive inspection of surfaces of ceramic diaphragms and disks for fractures and discontinuities. Involves reflecting beam of light from laser at glancing angle of about 20 degrees to 25 degrees off surface inspected and examining pattern of reflected light on suitable viewing surface as beam swept across surface. When fracture present, reflection pattern separates into two or more speckled spots. Technique applied in inspection of ceramic diaphragms bearing electronic circuits. Also useful in detection of fatigue cracks on aircraft.
Document ID
19950070375
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Laue, Eric G.
(Caltech)
Date Acquired
August 16, 2013
Publication Date
November 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 11
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-19131
Accession Number
95B10554
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available