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Materials 2015, 8(12), 8751-8767; doi:10.3390/ma8125490

Failure Progress of 3D Reinforced GFRP Laminate during Static Bending, Evaluated by Means of Acoustic Emission and Vibrations Analysis

1
Faculty of Materials Engineering and Metallurgy, Silesian University of Technology, ul. Krasinskiego 8, 40-019 Katowice, Poland
2
Faculty of Transport, Silesian University of Technology, ul. Krasinskiego 8, 40-019 Katowice, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Mark Whittaker
Received: 9 October 2015 / Revised: 29 November 2015 / Accepted: 3 December 2015 / Published: 14 December 2015
(This article belongs to the Special Issue Failure Analysis in Materials)
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Abstract

The work aimed to assess the failure progress in a glass fiber-reinforced polymer laminate with a 3D-woven and (as a comparison) plain-woven reinforcement, during static bending, using acoustic emission signals. The innovative method of the separation of the signal coming from the fiber fracture and the one coming from the matrix fracture with the use of the acoustic event’s energy as a criterion was applied. The failure progress during static bending was alternatively analyzed by evaluation of the vibration signal. It gave a possibility to validate the results of the acoustic emission. Acoustic emission, as well as vibration signal analysis proved to be good and effective tools for the registration of failure effects in composite laminates. Vibration analysis is more complicated methodologically, yet it is more precise. The failure progress of the 3D laminate is “safer” and more beneficial than that of the plain-woven laminate. It exhibits less rapid load capacity drops and a higher fiber effort contribution at the moment of the main laminate failure. View Full-Text
Keywords: glass fibre reinforced polymer laminate; 3D reinforcement; failure analysis; signal analysis; vibrations analysis; acoustic emission glass fibre reinforced polymer laminate; 3D reinforcement; failure analysis; signal analysis; vibrations analysis; acoustic emission
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Koziol, M.; Figlus, T. Failure Progress of 3D Reinforced GFRP Laminate during Static Bending, Evaluated by Means of Acoustic Emission and Vibrations Analysis. Materials 2015, 8, 8751-8767.

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