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Title of Journal: Appl Math MechEngl Ed

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Abbravation: Applied Mathematics and Mechanics

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Shanghai University Press

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DOI

10.1016/0142-1123(93)90005-b

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ISSN

1573-2754

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Damage detection method in complicated beams with

Authors: Kan Feng Zheng Li Guiyun Gao Xianyue Su
Publish Date: 2011/04/06
Volume: 32, Issue: 4, Pages: 469-478
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Abstract

A damage detection method for complicated beamlike structures is proposed based on the subsection strain energy method SSEM and its applicability condition is introduced For a beam with the continuously varying flexural stiffness and an edge crack the SSEM is used to detect the crack location effectively by numerical modal shapes As a complicated beam the glass fiberreinforced composite model of a wind turbine blade is studied based on an experimental modal analysis The SSEM is used to calculate the damage index from the measured modal parameters and locate the damage position in the blade model successfully The results indicate that the SSEM based on the modal shapes can be used to detect the damages in complicated beams or beamlike structures for engineering applications

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