Metal matrix composites (MMC) and intermetallic matrix composites (IMC) are materials of complex structure. Nominally defect-free, as-manufactured MMC requires nondestructive evaluation (NDE) for quality assurance and process monitoring purposes. In this work, three NDE techniques — ultrasonics, eddy current, and X-ray radiography — were applied to un-damaged NiFeAI/Wf coupons. Images of the coupons were obtained using the three techniques. The NDE results were compared among themselves, and correlations were sought between these results and microstructural features of the specimen. Consistencies were found among the NDE results and a strong correlation was found between the spatial variation of fiber density and the NDE signals.

Volume Subject Area:
Ceramics
Topics:
Nondestructive evaluation, Composite materials, Density, Eddies (Fluid dynamics), Eddy currents (Electricity), Fibers, Intermetallic compounds, Metal matrix composites, Process monitoring, Quality control, Signals, Ultrasonics, X-rays
This content is only available via PDF.
Copyright © 1994 by ASME