Results 31 to 40 of about 1,998,737 (342)

An Advanced Edge-Detection Method for Noncontact Structural Displacement Monitoring

Sensors, 2020
A non-contact vision sensor system for monitoring structural displacements with advanced Zernike subpixel edge detection technique is suggested in this paper. Edge detection can detect features of objects effectively without using templates.
Xin Bai, Mijia Yang, Beena Ajmera
doaj   +1 more source

Experimental Study on the Natural Dynamic Characteristics of Steel-Framed Modular Structures

Buildings, 2022
Corner-supported modular structures are made of repetitive prefurnished, prefinished modular units, which are fabricated in a factory and transported to the site of a building to form a permanent building block.
Mostafa Farajian, Pejman Sharafi, Ali Bigdeli, Hadi Eslamnia, Payam Rahnamayiezekavat   +4 more
doaj   +1 more source

Damage identification in a concrete beam using curvature difference ratio [PDF]

, 2011
Previous studies utilising changes in mode shape or curvature to locate damage rely on the fact that the greatest change occurs around the defect. However, in concrete beams this fact is undermined due to the nature of the defect as distributed multi ...
, Ali A Al-Ghalib, Bayissa W, Farrar C, Fouad A Mohammad, John Chilton, Mujib Rahman, Owen J, Salawu O S, Stubbs N, Zhang Z   +10 more
core   +1 more source

A Noise-Robust, Baseline-Free, and Adaptive Damage Indicator of Plate-like Structures Based on the Multicomponent Information Separation of High-Resolution Mode Shapes Using Wavelets

Sensors
Modal-based damage identification methods, particularly those utilizing mode shapes, excel in damage localization due to their spatial distribution characteristics.
Yuexin Wang, Tongfa Deng, Jinwen Huang, Maosen Cao, Dragoslav Sumarac   +4 more
doaj   +1 more source

A Review on Vibration-Based Damage Detection Methods for Civil Structures

Vibration, 2023
Vibration-based damage detection is a range of methods that utilizes the dynamic response of a structure to evaluate its condition and detect damage.
Xutao Sun, Sinniah Ilanko, Yusuke Mochida, Rachael C. Tighe   +3 more
doaj   +1 more source

Shape-preserving diffusion of a high-order mode

, 2012
The close relation between the processes of paraxial diffraction and coherent diffusion is reflected in the similarity between their shape-preserving solutions, notably the Gaussian modes.
Dimitry Yankelev, Firstenberg, Firstenberg, Firstenberg, Higginbottom, MacAdam, Moshe Shuker, Nir Davidson, Ofer Firstenberg, Porras, Pratesi, Pugatch, Saghafi, Shin, Shuker, Siegman, Takenaka, Yoshikawa, Zauderer   +18 more
core   +1 more source

Epoxy/Polycaprolactone Systems with Triple-Shape Memory Effect: Electrospun Nanoweb with and without Graphene Versus Co-Continuous Morphology [PDF]

, 2013
Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced.
Andrady, Hu, József Karger-Kocsis, Kolos Molnár, Luo, Molnár, Márta Fejős, Xie, Xie   +8 more
core   +2 more sources

Damage Identification of Structures Using Second-Order Approximation of Neumann Series Expansion [PDF]

Journal of Rehabilitation in Civil Engineering, 2020
In this paper, a new method proposed for structural damage detection from limited number of sensors using extreme learning machine (ELM). One of the main challenges in structural damage identification problems is the limitation in the number of used ...
Seyed Sina Kourehli
doaj   +1 more source

Nonequilibrium effects of anisotropic compression applied to vortex lattices in Bose-Einstein condensates [PDF]

, 2002
We have studied the dynamics of large vortex lattices in a dilute-gas Bose-Einstein condensate. While undisturbed lattices have a regular hexagonal structure, large-amplitude quadrupolar shape oscillations of the condensate are shown to induce a wealth ...
E. A. Cornell, I. Coddington, J. R. Abo-Shaeer, P. C. Haljan, P. Engels   +4 more
core   +4 more sources

The Effect of Fiber Orientation and Crack on Dynamic Characteristics of a Unidirectional Composite Cantilevered Wing Plate

International Journal of Technology
Composite materials are becoming key elements in constructing advanced structures such as aircraft. These structures offer the benefit in terms of optimization between strength, stiffness, and weight.
Faisal Ramadhan, Rianto Adhy Sasongko, Leonardo Gunawan, Mahesa Akbar, Djarot Widagdo   +4 more
doaj   +1 more source