Hybrid transient-parametric AE analysis of histories of damage micromechanisms in composites

Y. Dzenis, J. Qian

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

The problem of microdamage evolution in advanced composites is addressed in this paper. A combination of transient waveform classification and multiparametric filtering is used to extract the histories of damage evolution in a unidirectional graphite/epoxy composite loaded in the fiber and transverse directions. Three characteristic AE waveforms with different amplitudes, durations, and frequency spectra are identified based on the transient analysis. The waveforms are associated with matrix cracks, fiber breaks, and longitudinal splitting in the composite. Parametric regions for the characteristic waveforms are identified in the amplitude-risetime parametric space. Multiparametric filtering is applied to extract the microdamage evolution histories. The method is expected to be advantageous for the real-time damage and fracture monitoring of composite structures.

Original languageEnglish (US)
Pages (from-to)361-370
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4335
DOIs
StatePublished - 2001
EventAdvanced Nondestructive Evaluation for Structural and Biological Health Monitoring - Newport Beach, CA, United States
Duration: Mar 6 2001Mar 8 2001

Keywords

  • Acoustic emission analysis
  • Composites
  • Damage evolution histories
  • Damage mechanisms

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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