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Proceedings 2018, 2(8), 448; https://doi.org/10.3390/ICEM18-05330

On the Influence of Experimental Parameters on the Consistency of the LDR-Based Defect Detection Approach Applied to Composite Material Structures

1
Mechanical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium
2
SIM M3 Program, Technologiepark 935, 9052 Zwijnaarde, Belgium
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 11 June 2018
PDF [1673 KB, uploaded 28 June 2018]

Abstract

The Local Defect Resonance (LDR) approach is a technique which is used to detect and localize defects in structural components in a non-invasive way. In this contribution, we will assess whether the local resonance frequencies changes by altering a set of experimental testing conditions (i.e., imposed boundary condition, number of excitation points and excitation location). The specimen is made of a carbon fiber reinforced polymer and contains multiple flat bottom holes. However, here, we will focus on three detectable defects. The measured response analyzed through a parametric data-processing approach confirms that the local resonance frequencies are independent of the proposed changes.
Keywords: local defect resonance; composites; defect characterization; laser doppler vibrometer; non-destructive inspection local defect resonance; composites; defect characterization; laser doppler vibrometer; non-destructive inspection
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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Arroud, G.; El-Kafafy, M.; Guillaume, P. On the Influence of Experimental Parameters on the Consistency of the LDR-Based Defect Detection Approach Applied to Composite Material Structures. Proceedings 2018, 2, 448.

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