Output-only modal identification based on hierarchical Hough transform

2016 ◽  
Vol 30 (7) ◽  
pp. 2941-2951 ◽  
Author(s):  
Yi Jin ◽  
Shaoqian Qin ◽  
Jie Guo ◽  
Chang’an Zhu
Keyword(s):  
Hough Transform ◽  
Modal Identification ◽  
Output Only

Modal Identification of Crane Structure Based on Output-Only Data

2012 ◽  
pp. 557-565
Author(s):  
Weiguo Zhang ◽  
Huiqing Qiu ◽  
Kailiang Lu ◽  
Zhiyong Hao ◽  
Yuan Liu
Keyword(s):  
Modal Identification ◽  
Output Only

scholarly journals DETERMINATION OF THE EFFECT OF TiO2 ON THE DYNAMIC BEHAVIOR OF SCALED CONCRETE CHIMNEY BY OMA

2021 ◽  
Vol 55 (3) ◽  
Author(s):  
Sertaç Tuhta ◽  
Furkan Günday
Keyword(s):  
Titanium Dioxide ◽  
Outer Surface ◽  
Ground Level ◽  
Modal Identification ◽  
Ambient Vibration ◽  
Mode Shapes ◽  
Dynamic Parameters ◽  
Vibration Data ◽  
Output Only ◽  
Frequency Domain Decomposition

In this article, the dynamic parameters (frequencies, mode shapes, damping ratios) of a scaled concrete chimney and the dynamic parameters (frequencies, mode shapes, damping ratios) of the entire outer surface of the 80-micron-thick titanium dioxide are compared using the operational modal analysis method. Ambient excitation was provided from micro tremor ambient vibration data at ground level. Enhanced Frequency Domain Decomposition (EFDD) is used for the output-only modal identification. From this study, very best correlation is found between the mode shapes. Titanium dioxide applied to the entire outer surface of the scaled concrete chimney has an average of 16.34 % difference in frequency values and 9.81 % in damping ratios, proving that nanomaterials can be used to increase the rigidity in chimneys, in other words, for reinforcement. Another important result determined in the study is that it has been observed that the adherence of titanium dioxide and similar nanomaterials mentioned in the introduction to concrete chimney surfaces is at the highest level.

Output-Only Modal Identification of Ancient L’Aquila City Hall and Civic Tower

2012 ◽  
Vol 138 (4) ◽  
pp. 481-491 ◽  
Author(s):  
G. P. Cimellaro ◽  
S. Piantà ◽  
A. De Stefano
Keyword(s):  
Modal Identification ◽  
City Hall ◽  
Output Only

scholarly journals Damping estimation of a double layer grid with ball joint system by output-only modal identification

2019 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Seyed Rasoul Nabavian ◽  
Mohammad Reza Davoodi ◽  
Bahram Navayi Neya ◽  
Seyedamin Mostafavian
Keyword(s):  
Double Layer ◽  
Modal Identification ◽  
Ball Joint ◽  
Joint System ◽  
Output Only ◽  
Damping Estimation
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