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A nondestructive approach to correlate the interfacial defects induced during processing of MMCs and CMCs with the consolidation parameters

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Abstract

An ultrasonic nondestructive methodology for evaluating the consolidation and microstructure of advanced fiber-reinforced composites has been developed to aid in their design and fabrication. The use of this nondestructive evaluation (NDE) technique can enable optimization of the processing parameters to obtain complete densification around the fibers. In addition, the methodology can be used to ensure that the composite panels are devoid of any global problems such as fiber swimming, ply delamination, embedded manufacturing anomalies such as voids, etc. Such a post processing NDE is also essential before any interfacial characterization is performed. The technique described in this paper, being generic, is applicable to both metal matrix and ceramic matrix composites.

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This work was supported by and performed on-site in the Materials Directorate, Wright Laboratory, Materiel Command, Wright-Patterson Air Force Base, Ohio, USA. Contract nos. F33615-94-C-5213 (T. E. Matikas and P. Karpur), F33615-91-C-5663 (S. Krishnamurthy).

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Matikas, T.E., Karpur, P., Krishnamurthy, S. et al. A nondestructive approach to correlate the interfacial defects induced during processing of MMCs and CMCs with the consolidation parameters. Appl Compos Mater 2, 293–311 (1995). https://doi.org/10.1007/BF00568766

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  • DOI: https://doi.org/10.1007/BF00568766

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