Abstract:
Digital X-ray detector technology has paved the way for two powerful nondestructive evaluation (NDE) techniques, namely digital radiography (DR) and computed tomography (CT). These techniques provide several advantages over conventional filmbased radiographic techniques. Some of these advantages include increased contrast sensitivity, more convenient data storage and transfer, and improved implementation of image processing algorithms. This last advantage is critical for the implementation of automatic detection capabilities for use during in-process inspection and post-production monitoring and examination. This paper will provide an overview of digital radiography and computed tomography of advanced composites including polymer-, ceramic-, and metal-matrix composites. Techniques for detecting fiber orientation, fiber waviness, fiber breakage, and matrix consolidation will be reviewed. The paper will also review plans to implement this technology for the advanced characterization and analysis of composites and to eventually develop advanced automatic detection systems.
Source: Proceedings of the 'NDE applied to Process Control of Composite Fabrication' - Conference, 4-5 Oct 1994 St. Louis, Missouri. Publisher and Organizer: Nondestructive Testing Information Analysis Center (NTIAC) Texas Research Institute Austin, Inc. Austin, Texas [http://www.ntiac.com] [Buying the Proceedings]
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