Modal Strain Energy Based Structural Health Monitoring on Rib Stiffened Composite Panels

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Abstract

Previously, an evaluation study has been conducted on a Structural Health Monitoring (SHM) strategy applied to a composite aileron by deriving the Modal Strain Energy Damage Indicator (MSE-DI). MSE-DI was used to localize the impact damage location. However, this study has also shown that the damage type may have had influence on the performance of the algorithm. To test this hypothesis, two identical composite stiffened panels have been manufactured. In this paper, the one-dimensional MSE formulation is used to extract damage indicators from two identically produced panels. A Laser Doppler Vibrometer is used to measure vibrations from 253 points on each panel. Both panels were identically damaged by impacting the skin causing a delamination of the stiffener. The damage indicators for the two panels are extracted and compared to each other. The results from confirm that the MSE-DI can successfully detect damage. However, for this specific case, the localization of the damage was not accurate due to a limited number of measured bending moment mode shapes.
Original languageEnglish
Publication statusPublished - 23 Aug 2016
Event3rd International Conference on Advances in Structural Health Management and Composite Structures - Chonbuk National University, Jeonju-si, Korea, Republic of
Duration: 23 Aug 201625 Aug 2016

Conference

Conference3rd International Conference on Advances in Structural Health Management and Composite Structures
Abbreviated titleASHMCS 2016
CountryKorea, Republic of
CityJeonju-si
Period23/08/1625/08/16

Keywords

  • IR-103712
  • METIS-317169

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    Hwang, J. S., Loendersloot, R., & Tinga, T. (2016). Modal Strain Energy Based Structural Health Monitoring on Rib Stiffened Composite Panels. Paper presented at 3rd International Conference on Advances in Structural Health Management and Composite Structures, Jeonju-si, Korea, Republic of.