Internal Structural Characterization
Abstract
The nondestructive evaluation (NDE) techniques most appropriate for the detection of a variety of defects in metal-and ceramic matrix composites (MMC and CMC's) are described. NDE techniques which were investigated for application to these materials include acoustic microscopy, ultrasonic pulse- echo, ultrasonic through-transmission, ultrasonic velocity, ultrasonic backscatter, ultrasonic surface wave velocity, ultrasonic surface wave attenuation, film radiography, microtomographic radiography, and dual-energy microtomographic radiography. Types of defects for which optimized techniques are summarized include delaminations, broken fibers, fiber spacing, fiber orientation, fiber/matrix interface, matrix cracks and voids/porosity. Further NDE development is needed for these materials in the areas of basic development for other NDE modalities, advanced development for nondestructive material characterization, and the scale-up of proven NDE techniques for full scale components, to accommodate cost and geometry limitations. Ultrasonics, Radiography, Cracks, Characterization, Metal Matrix Composite, Nondestructive Evaluation(NDE), Defect, Ceramic Matrix Composite, Computed Tomography Detection
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1992
- Accession Number
- ADA264762
Entities
People
- M. Bashyam
- R. Klaassen
Organizations
- General Electric