Dynamic and Quasi-Static Multiaxial Response of Ceramics and Constitutive/Damage Modeling
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2001-01-02
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Khan, Akhtar S.; Dynamic and Quasi-Static Multiaxial Response of Ceramics and Constitutive/Damage Modeling; https://apps.dtic.mil/sti/pdfs/ADA386944.pdf
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This is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0
This is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
Acoustic emission (AE) waveforms were recorded during compression of the ceramic Alumina AD995. The frequency contents of the wave form were determined using FFT technique. It was found that signals which represented damage/crack growth had frequencies between 39 and 80 kHz. Experiments were also performed on post-shocked AD995 speciments. Significant differences were observed which demonstrated that AE technique could be used for damage evolution determination.