Results 201 to 210 of about 7,408,303 (251)

Substructure damage identification using damage tracking technique

SPIE Proceedings, 2007
A challenging problem in structural damage detection based on vibration data is the requirement of a large number of sensors and the numerical difficulty in obtaining reasonably accurate results when the system is large. To address this issue, the substructure identification approach may be used.
Jann N. Yang, Hongwei Huang
openaire   +1 more source

Machine-learning-based damage identification methods with features derived from moving principal component analysis

Mechanics of Advanced Materials and Structures, 2020
This paper aims to propose machine-learning-based damage identification methods with features derived from moving principal component analysis (MPCA) to improve the damage identification performance for engineering structures.
Ge Zhang, Liqun Tang, Zejia Liu, Licheng Zhou, Yiping Liu, Zhenyu Jiang   +5 more
semanticscholar   +1 more source

Tuning metaheuristic algorithms using mixture design: Application of sunflower optimization for structural damage identification

Advances in Engineering Software, 2020
This paper presents an efficient inverse global optimization approach for damage identification of plate-like structures. In this approach, the damage identification process is performed by minimizing an objective function based on modal parameters of ...
G. Gomes, F. A. Almeida
semanticscholar   +1 more source

Non-probabilistic method to consider uncertainties in structural damage identification based on Hybrid Jaya and Tree Seeds Algorithm

, 2020
This paper proposes a novel non-probabilistic structural damage identification approach by developing a hybrid swarm intelligence technique based on Jaya and Tree Seeds Algorithm (TSA), taking into account the high-level uncertainties in the measurements
Z. Ding, Jun Li, H. Hao
semanticscholar   +1 more source

Damage Identification in 1D Structures

47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006
The paper summarizes experimental and numerical analysis directed towards identification of damages in one-dimensional constructional elements. The presented method of structural damage identification makes use of high frequency signals, which are sensitive to small discontinuities in structures. The experimental set is presented.
Magdalena Palacz, P. Kudela, Marek Krawczuk, Wieslaw Ostachowicz   +3 more
openaire   +1 more source

Optimal Sensor Placement Method Considering the Importance of Structural Performance Degradation for the Allowable Loadings for Damage Identification

, 2020
Considering the importance of damage for the structural performance and for decreasing the identification error, this paper proposes an optimal sensor placement method based on a weighted standard deviation norm (WSDN) index.
Qinghe Shi, Xiaojun Wang, Wenpin Chen, Kejun Hu   +3 more
semanticscholar   +1 more source

The role of curvatures in damage identification

2022
Natural frequencies are the observed quantities in most of the pioneering works in vibration-based damage identification; they can be reliably measured, but as a global property exhibit a limited sensitivity to local damage, mainly in the early damage state.
vestroni F, pau A, ciambella j
openaire   +1 more source

Damage identification by wavelet analysis

Mechanical Systems and Signal Processing, 2008
Structural health monitoring (SHM) has been related to damage monitoring with operational loads playing a significant role in terms of fatigue life and damage accumulation prognostics. A lot of different techniques like acoustic emission, ultrasonic, acousto-ultrasonic, guided ultrasonic waves or Lamb waves are nowadays investigated in terms of ...
J. Grabowska, M. Palacz, M. Krawczuk
openaire   +1 more source

Damage identification in a parabolic arch

2007
A parabolic arch has been studied in its undamaged and damaged states. The damage consists in a notch that reduces the height of the cross section at a given abscissa. A damage identification technique, based on the minimization of an objective function which measures the differences between numerical and experimental variations of natural frequencies ...
A. GRECO, PAU, Annamaria, VESTRONI, Fabrizio   +2 more
openaire   +2 more sources

An efficient approach for damage identification based on improved machine learning using PSO-SVM

Engineering computations, 2021
Thanh Cuong‐Le, Trong Nghia-Nguyen, S. Khatir, Phuoc Trong-Nguyen, S. Mirjalili, Khuong D. Nguyen   +5 more
semanticscholar   +1 more source