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Synergy between Advanced Composites and New NDI Methods

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Advanced Performance Materials

Abstract

A D Sight Aircraft Inspection System (DAIS 500) large area composite impact damage detection capability has been demonstrated using several structures. In order to obtain equivalent impact damage depths, the IM7/5250-4 structures had to be subjected to much higher impact energies than conventional AS4/3501-6 structures. It is postulated that the application of DAIS with its better than visual inspection sensitivity could lead to both increased design allowables and an alternate approach to certification of composite structures based on impact cumulative probability of occurrence. Further evidence of impact indent depth relaxation (over 30%) was observed. Indent relaxation may have significant implications with respect to the airworthiness of composite structures designed to BVID (barely visible impact damage) limits since this relaxation makes the damage site less apparent.

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References

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Authors and Affiliations

  1. Structures, Materials and Propulsion Laboratory, Institute for Aerospace Research, National Research Council Canada, Montreal Rd. M-14, Ottawa, Ontario, K1A OR6, Canada

    Jerzy P. Komorowski, Ronald W. Gould & David L. Simpson

Authors
  1. Jerzy P. Komorowski
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  2. Ronald W. Gould
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  3. David L. Simpson
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Komorowski, J.P., Gould, R.W. & Simpson, D.L. Synergy between Advanced Composites and New NDI Methods. Advanced Performance Materials 5, 137–151 (1998). https://doi.org/10.1023/A:1008694223117

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  • DOI: https://doi.org/10.1023/A:1008694223117

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