Dynamic and Quasi-Static Multiaxial Response of Ceramics and Constitutive/Damage Modeling

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 specimens. Significant differences were observed which demonstrated that AE technique could be used for damage evolution determination.

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Document Details

Document Type
Technical Report
Publication Date
Jan 02, 2001
Accession Number
ADA386944

Entities

People

  • Akhtar S. Khan

Organizations

  • University of Maryland, Baltimore County

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Acquisition
  • Aluminum Oxides
  • Ceramic Materials
  • Composite Materials
  • Data Acquisition
  • Detectors
  • Electron Microscopy
  • Emission
  • Failure Mode And Effect Analysis
  • Frequency
  • Materials
  • Personal Information Managers
  • Phase Transformations
  • Transducers
  • Waveforms
  • Waves

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.