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Acoustic emission from composite-reinforced metals

Acoustic-emission count rates for tensile tests of unidirectional boron-epoxy and for aluminum sheets reinforced with unidirectional boron-expoxy

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Abstract

Acoustic-emission (AE) count rates are presented for tensile loading of unidirectional boron-epoxy and for aluminum sheets reinforced with unidirectional boron-epoxy. It is shown that different prepreg materials have different characteristic AE patterns. Results from composite-reinforced metal specimens show that early failures are accompanied by a sharp increase in AE count rate at the knee of the bilinear stress-strain diagram. It is further shown that the count rates are a function of specimen fabrication and that higher total counts do not necessarily correspond to early failures.

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References

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Authors and Affiliations

  1. Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, 24061, Blacksburg, VA

    E. G. Henneke II (Associate), C. T. Herakovich (Associate Professors), G. L. Jones (Graduate Students) & M. P. Renieri (Graduate Students)

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  1. E. G. Henneke II
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  2. C. T. Herakovich
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  3. G. L. Jones
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  4. M. P. Renieri
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Additional information

Work was supported by NASA NAS1-10646-17 and NASA NGR-47-004-101.

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Henneke, E.G., Herakovich, C.T., Jones, G.L. et al. Acoustic emission from composite-reinforced metals. Experimental Mechanics 15, 10–16 (1975). https://doi.org/10.1007/BF02318519

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  • DOI: https://doi.org/10.1007/BF02318519

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