Characterization of delamination and transverse cracking in graphite/epoxy laminates by acoustic emissionEfforts to characterize and differentiate between two major failure processes in graphite/epoxy composites - transverse cracking and Mode I delamination - are described. Representative laminates were tested in uniaxial tension and flexure. The failure processes were monitored and identified by acoustic emission (AE). The effect of moisture on AE was also investigated. Each damage process was found to have a distinctive AE output that is significantly affected by moisture conditions. It is concluded that AE can serve as a useful tool for detecting and identifying failure modes in composite structures in laboratory and in service environments.
Document ID
19850047796
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Garg, A. (NASA Ames Research Center Moffett Field, CA, United States)
Ishai, O. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Subject Category
Composite Materials
Meeting Information
Meeting: International Symposium on Acoustic Emission from Reinforced Plastics