Results 51 to 60 of about 1,822,978 (208)

Real-time damage detection of bridges using adaptive time-frequency analysis and ANN [PDF]

open access: yesNumerical Methods in Civil Engineering, 2019
Although traditional signal-based structural health monitoring algorithms have been successfully employed for small structures, their application for large and complex bridges has been challenging due to non-stationary signal characteristics with a high ...
V. Ahmadian   +2 more
doaj   +1 more source

A Framework for Long-Term Vibration-Based Monitoring of Bridges

open access: yesSensors, 2021
A new framework for long-term monitoring of bridges is proposed in order to negate (i) the impact of measurement uncertainties on damage detection in vibration-based structural health monitoring and (ii) the low sensitivity of damage indicators to low ...
Emrah Erduran   +2 more
doaj   +1 more source

Interfacial nanocomposite sensors (sQRS) for the core monitoring of polymer composites’ fatigue and damage analysis

open access: yesNanocomposites, 2018
The quick development of the smart factory and prognostic and health management (PHM), in the fields of aeronautic, automotive and green energies, is evidencing a need for sensors able to monitor the behavior of composite materials all along their life ...
Suvam Nag-Chowdhury   +5 more
doaj   +1 more source

Damage Detection of Truss Structures by Reduction of Degrees of Freedom Using the Serep Method

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2020
Damage detection of bridge structures during their operating lifetime is essential. In this paper, two approaches, All Degrees of Freedom and Reduction of the Degrees of Freedom methods, are used to detect the damages in structures.
Shahin Lale Arefi, Amin Gholizad
doaj   +1 more source

Damage identification of structures using experimental modal analysis and continuous wavelet transform [PDF]

open access: yesNumerical Methods in Civil Engineering, 2017
:Modal analysis is a powerful technique for understanding the behavior and performance of structures. Modal analysis can be conducted via artificial excitation, e.g. shaker or instrument hammer excitation.
A. Gholizad, H. Safari
doaj   +1 more source

Damage Detection for Conveyor Belt Surface Based on Conditional Cycle Generative Adversarial Network

open access: yesSensors, 2022
The belt conveyor is an essential piece of equipment in coal mining for coal transportation, and its stable operation is key to efficient production. Belt surface of the conveyor is vulnerable to foreign bodies which can be extremely destructive.
Xiaoqiang Guo   +6 more
doaj   +1 more source

Perturbation Analysis for Robust Damage Detection with Application to Multifunctional Aircraft Structures [PDF]

open access: yes, 2014
The most widely known form of multifunctional aircraft structure is smart structures for structural health monitoring (SHM). The aim is to provide automated systems whose purposes are to identify and to characterize possible damage within structures by ...
HAJRYA, Rafik, MECHBAL, Nazih
core   +3 more sources

A comparison of modal flexibility method and modal curvature method in structural damage detection [PDF]

open access: yes, 2010
Vibration based damage detection techniques examines the changes in dynamic properties of a structure such as frequency, mode shape and damping to indicate the presence of damage.
Zaharudin, Noor Sabrina
core  

Mobile Image Ratiometry for the Detection of Botrytis cinerea (Gray Mold) [PDF]

open access: yes, 2012
Mobile Platform Informatics (MPI) and Smartphone Informatics (SPI) methods like Mobile Image Ratiometry (MIR) are potentially transformative point-of-use instantaneous analysis tools that are useful across a variety of industries.
Donald C. Cooper
core   +2 more sources

Dynamic characterisation of a damaged composite structure with stiffeners employing fibre bragg gratings [PDF]

open access: yes, 2011
One of the key issues in composite structures for aircraft applications is the early detection and localisation of damage. Often service induced damage does not involve visible plastic deformation, but internal matrix related damage, like transverse ...
Akkerman, R.   +5 more
core   +1 more source

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