Structure damage localization using a reliable wave damage detection technique

2016 ◽  
Author(s):  
Khalil M. Qatu ◽  
Ahmed Abdelgawad ◽  
Kumar Yelamarthi
Keyword(s):  
Damage Detection ◽  
Detection Technique ◽  
Damage Localization ◽  
Structure Damage

Structure Damage Detection via the Behavior of Substructure

1991 ◽  
Author(s):  
J. H. Wang ◽  
C. S. Liou
Keyword(s):  
Damage Detection ◽  
Mechanical System ◽  
Dynamic Behavior ◽  
Structural Damage ◽  
Structure Damage

Abstract A mechanical system generally consists of many substructures. However, it is impossible to observe the dynamic behavior of any substructure directly when the whole structure is in operation. A method was proposed in this work to determine the FRFs of a substructure by using the measured FRFs of the whole structure and the priorly known FRFs of another substructure With this method, one can detect the structural damage more easily by observing the change of the FRFs of the damaged substructure.

A hybrid methodology for structure damage detection uniting FEM and 1D-CNNs: Demonstration on typical high-pile wharf

2022 ◽  
Vol 168 ◽  
pp. 108738
Author(s):  
Yujue Zhou ◽  
Yonglai Zheng ◽  
Yongcheng Liu ◽  
Tanbo Pan ◽  
Yubao Zhou
Keyword(s):  
Damage Detection ◽  
Structure Damage ◽  
Hybrid Methodology

scholarly journals Vibration Based Damage Detection of Rotating Beams

2018 ◽  
Vol 148 ◽  
pp. 14008 ◽  
Author(s):  
Stanislav Stoykov ◽  
Emil Manoach ◽  
Maosen Cao
Keyword(s):  
Damage Detection ◽  
Selection Criteria ◽  
Excitation Frequency ◽  
Real Life ◽  
Equation Of Motion ◽  
Damage Localization ◽  
Rotating Beam ◽  
Free Boundary Conditions ◽  
Wide Range ◽  
Detection And Localization

The early detection and localization of damages is essential for operation, maintenance and cost of the structures. Because the frequency of vibration cannot be controlled in real-life structures, the methods for damage detection should work for wide range of frequencies. In the current work, the equation of motion of rotating beam is derived and presented and the damage is modelled by reduced thickness. Vibration based methods which use Poincaré maps are implemented for damage localization. It is shown that for clamped-free boundary conditions these methods are not always reliable and their success depends on the excitation frequency. The shapes of vibration of damaged and undamaged beams are shown and it is concluded that appropriate selection criteria should be defined for successful detection and localization of damages.

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