Journal
COMPOSITE STRUCTURES
Volume 170, Issue -, Pages 26-39Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2017.03.005
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Funding
- Polish National Science Centre - Poland [DEC-2013/11/B/ST8/04358]
- Bulgarian NSF [DUNK-01/3]
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In this paper a new damage index for detection and location of damage is introduced. It is improved version of the earlier developed Poincare map method based on forced response of the structure. The proposed method is compared with the most popular modal based methods for damage detection: the modal displacements, modal curvatures and the strain energy methods. A finite element model of intact and damaged composite beams is used in order to validate correctness and efficiency of the method. Moreover, the modal based and forced response are tested experimentally by using a scanning laser vibrometer. The advantages of the offered method and its application in SHM are demonstrated by numerical simulations and experimental tests. (C) 2017 Elsevier Ltd. All rights reserved.
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