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Effect of propagation distance on acoustic emission of carbon fiber/epoxy composites

Author(s):



Medium: journal article
Language(s): English
Published in: Structural Health Monitoring, , n. 6, v. 20
Page(s): 147592172098615
DOI: 10.1177/1475921720986156
Abstract:

This study examined the change in acoustic emission as a function of measurement position of fiber-reinforced composites. Single-edge-notched carbon fiber/epoxy composites were prepared and tested under cyclic loading, with sensors located at specific distances from the end of the notch. Although the I b-value increased overall, the degree of increase significantly varied with position and acoustic emission frequency. Notably, the proportion of acoustic emission signals for each failure mode varied due to a high attenuation rate at high frequencies, which increased the I b-value. Accordingly, the high-frequency fiber-failure signals significantly affected the I b-value. This study focused on the importance of analyzing acoustic emission signals by considering the crack location and frequency-dependent attenuation rate. We concluded that an acoustic emission sensor should be located 20–40 mm from the crack location for woven carbon fiber/epoxy composites.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1177/1475921720986156.
  • About this
    data sheet
  • Reference-ID
    10562576
  • Published on:
    11/02/2021
  • Last updated on:
    29/11/2021
 
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