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A new mechanical structural damage feature index based on HHT [PDF]
, 2018 A new damage feature index is presented for the structural health monitoring based on Hilbert-Huang transform (HHT). The energy marginal spectrum of the dynamic signal is used to construct damage characteristic parameter, which can reflect the signal ...
Hua, Lin, Wang, Fusheng, Yue, Zhufeng
core +3 more sources
Journal of Civil Structural Health Monitoring, 2021 There is a need for reliable structural health monitoring (SHM) systems that can detect local and global structural damage in existing steel bridges. In this paper, a data-based SHM approach for damage detection in steel bridges is presented.
B. T. Svendsen +3 more
semanticscholar +1 more source
Damage detection using in-domain and cross-domain transfer learning [PDF]
Neural computing & applications (Print), 2021 We investigate the capabilities of transfer learning in the area of structural health monitoring. In particular, we are interested in damage detection for concrete structures. Typical image datasets for such problems are relatively small, calling for the
Z. Bukhsh, N. Jansen, Aaqib Saeed
semanticscholar +1 more source
Shaking Table Tests and Validation of Multi-Modal Sensing and Damage Detection Using Smartphones
Buildings, 2021 Structural health monitoring (SHM) systems using modal- and vibration-based methods, particularly wireless systems, have been widely investigated in relation to the monitoring of damage states in civil infrastructures such as bridges and buildings ...
Ruicong Han, Xuefeng Zhao
doaj +1 more source
Vibration Analysis of Laminated Composites Using Experimental and Genetic Algorithms Optimization Technique [PDF]
Engineering and Technology Journal, 2012 In this paper, damage detection for different types of defects (delamination, crackand hole) in the composite laminate plate and cylindrical shell be used to characterizethe vibration behavior experimentally which used two types of load (plus and ...
Nabil Hassan Hadi, Kayser Aziz Ameen
doaj +1 more source
Fatigue Crack Monitoring of T-Type Joints in Steel Offshore Oil and Gas Jacket Platform
Sensors, 2021 Several approaches have been used in the past to predict fatigue crack growth rates in T-joints of the offshore structures, but there are relatively few cases of applying structural health monitoring during the non-destructive testing of jacket platforms.
Liaqat Ali +5 more
doaj +1 more source
Bridge damage detection based on vibration data: past and new developments [PDF]
, 2017 Overtime, bridge condition declines due to a number of degradation processes such as creep, corrosion, and cyclic loading, among others. Traditionally, vibration-based damage detection techniques in bridges have focused on monitoring changes to modal ...
Casas Rius, Joan Ramon +1 more
core +2 more sources
Principal component analysis and perturbation theory–based robust damage detection of multifunctional aircraft structure [PDF]
, 2013 A fundamental problem in structural damage detection is to define an efficient feature to calculate a damage index. Furthermore, due to perturbations from various sources, we also need to define a rigorous threshold whose overtaking indicates the ...
HAJRYA, Rafik, MECHBAL, Nazih
core +5 more sources
Damage Detection of Axially Loaded Beam: A Frequency-Based Method [PDF]
Civil Engineering Infrastructures Journal, 2016 The present study utilizes an analytical method to formulate the three lowest modal frequencies of axially-loaded notched beam through both crack location and load level in a specific format that can be used in existing frequency-based crack ...
Omid Rezaifar +1 more
doaj +1 more source
Sensor placement with optimal damage detectability for statistical damage detection
Mechanical Systems and Signal Processing, 2022 Damage diagnosis based on global structural vibrations critically depends on the sensor layout, in particular when a small number of sensors is used for large structures under unknown excitation. This paper proposes a sensor placement strategy that yields an optimized sensor layout with maximum damage detectability in selected structural components ...
Alexander Mendler +2 more
openaire +2 more sources