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Ultrasonic and radiographic evaluation of advanced aerospace materials: Ceramic compositesTwo conventional nondestructive evaluation techniques were used to evaluate advanced ceramic composite materials. It was shown that neither ultrasonic C-scan nor radiographic imaging can individually provide sufficient data for an accurate nondestructive evaluation. Both ultrasonic C-scan and conventional radiographic imaging are required for preliminary evaluation of these complex systems. The material variations that were identified by these two techniques are porosity, delaminations, bond quality between laminae, fiber alignment, fiber registration, fiber parallelism, and processing density flaws. The degree of bonding between fiber and matrix cannot be determined by either of these methods. An alternative ultrasonic technique, angular power spectrum scanning (APSS) is recommended for quantification of this interfacial bond.
Document ID
19900012085
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Generazio, Edward R.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Quality Assurance And Reliability
Report/Patent Number
NASA-TM-102540
NAS 1.15:102540
E-5403
Meeting Information
Meeting: Physics Dept. Seminars
Location: University Heights, OH
Country: United States
Start Date: April 11, 1990
Sponsors: John Carroll Univ.
Accession Number
90N21401
Funding Number(s)
PROJECT: RTOP 510-01-1A
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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