Improving identifiability of structural damage using higher order responses and phase space technique

2021 ◽  
Author(s):  
Zhen Peng ◽  
Jun Li ◽  
Hong Hao ◽  
Zhenhua Nie
Keyword(s):  
Phase Space ◽  
Structural Damage ◽  
Higher Order ◽  
Space Technique

Higher order point and continuum mechanics from phase-space action

2002 ◽  
Vol 305 (3-4) ◽  
pp. 93-99 ◽  
Author(s):  
J Shamanna ◽  
B Talukdar ◽  
U Das
Keyword(s):  
Phase Space ◽  
Continuum Mechanics ◽  
Higher Order ◽  
Space Action

Structural interrogation using phase space topology of the wind-induced responses

2017 ◽  
Vol 24 (14) ◽  
pp. 3148-3172
Author(s):  
Riya C George ◽  
Sudib K Mishra
Keyword(s):  
Phase Space ◽  
Structural Damage ◽  
Model Building ◽  
Chaotic Signal ◽  
Experimental Investigations ◽  
Damage Scenarios ◽  
Space Topology ◽  
Frame Building ◽  
Low Dimensional ◽  
Phase Space Topology

The applicability of the phase space interrogation (PSI) methodology for structural health monitoring (SHM) is limited on account of the fact that the structure needs to be excited by a low dimensional chaotic signal. The present study demonstrates that the phase space interrogation can still be applied to structures subjected to ambient/moderate wind excitations. Key to this extension is the relative low dimensionality of the wind-induced structural responses, amenable to phase space embedding by virtue of Takens’ embedding theorem. The so-formed pseudo-attractor is shown to sufficiently reflect the changes in system dynamics induced by structural damage(s). A widely employed damage feature, namely, the changes in phase space topology (CPST) is subsequently employed to the reconstructed attractor to link it with the presence, severity, as well as localization of damage(s). The CPST is established as a legitimate damage-sensitive feature by studying its variability with alternative damage scenarios in a multistoried frame building subjected to wind excitations. The performance of the methodology is demonstrated under different degrees of noise contamination in the measured responses as well as varying intensity of wind speed. The statistical robustness of the procedure is also assessed. The numerical findings are supported by the evidence from a limited number of experimental investigations carried out on a model building with inflicted damage scenarios. The wind loadings for the tests are simulated using a wind tunnel testing facility. Finally, a simple analysis is presented that establish the viability of the phase space analysis analytically.

scholarly journals Group-classified polynomials of phase space in higher-order aberration expansions

1991 ◽  
Vol 12 (6) ◽  
pp. 673-693 ◽  
Author(s):  
Kurt Bernardo Wolf ◽  
Guillermo Krötzsch
Keyword(s):  
Phase Space ◽  
Higher Order ◽  
Higher Order Aberration

scholarly journals Very-High-Eccentricity Librations at Some Higher Order Resonances

1992 ◽  
Vol 152 ◽  
pp. 153-158 ◽  
Author(s):  
J.C. Klafke ◽  
S. Ferraz-Mello ◽  
T. Michtchenko
Keyword(s):  
Phase Space ◽  
Numerical Integration ◽  
Higher Order ◽  
Planar Problem ◽  
High Eccentricity ◽  
Disturbing Potential ◽  
Numerical Exploration ◽  
Numerical Integrations ◽  
Short Period ◽  
Very High

Motions near the 3:1, 4:1 and 5:2 resonances with Jupiter are studied by means of numerical integrations of a semi-analytically averaged Sun-Jupiter-asteroid planar problem. In order to have a model including the very-high-eccentricity regions of the phase space, we adopted a set of local expansions of the disturbing potential, adequate to perform the numerical exploration of regions in the phase space with eccentricities higher than 0.9 (Ferraz-Mello and Klafke, 1991). Individual solutions and qualitative results thus obtained are completely reproduced by numerical integration of the complete equations by filtering off the short-period components of these solutions.

Using vibration phase space topology changes for structural damage detection

2012 ◽  
Vol 11 (5) ◽  
pp. 538-557 ◽  
Author(s):  
Zhenhua Nie ◽  
Hong Hao ◽  
Hongwei Ma
Keyword(s):  
Phase Space ◽  
Damage Detection ◽  
Structural Damage ◽  
Structural Damage Detection ◽  
Space Topology ◽  
Topology Changes ◽  
Phase Space Topology

scholarly journals Higher order QCD effects and particle density in full phase space from highp T interactions at the ISR

1991 ◽  
Vol 52 (4) ◽  
pp. 551-557 ◽  
Author(s):  
◽  
A. Breakstone ◽  
C. D. Buchanan ◽  
R. Campanini ◽  
H. B. Crawley ◽  
...  
Keyword(s):  
Phase Space ◽  
Particle Density ◽  
Higher Order ◽  
Full Phase Space

A phase‐space technique for the perturbation expansion of Schrödinger propagators

1995 ◽  
Vol 36 (1) ◽  
pp. 30-61 ◽  
Author(s):  
A. O. Barvinsky ◽  
T. A. Osborn ◽  
Yu. V. Gusev
Keyword(s):  
Phase Space ◽  
Perturbation Expansion ◽  
Space Technique

Islanding detection in a distributed generation integrated power system using phase space technique and probabilistic neural network

2015 ◽  
Vol 148 ◽  
pp. 587-599 ◽  
Author(s):  
Aziah Khamis ◽  
Hussain Shareef ◽  
Azah Mohamed ◽  
Erdal Bizkevelci
Keyword(s):  
Neural Network ◽  
Phase Space ◽  
Power System ◽  
Distributed Generation ◽  
Probabilistic Neural Network ◽  
Islanding Detection ◽  
Space Technique ◽  
Integrated Power System
Sign in / Sign up

Export Citation Format

Share Document