Identification of delaminations in composite: structural health monitoring software based on spectral estimation and hierarchical genetic algorithm

Author(s):  
A. Nag ◽  
D. Roy Mahapatra ◽  
S. Gopalakrishnan
2016 ◽  
Vol 07 (06) ◽  
pp. 814-823 ◽  
Author(s):  
U. Muthuraman ◽  
M. M. Sai Hashita ◽  
N. Sakthieswaran ◽  
P. Suresh ◽  
M. Raj Kumar ◽  
...  

2018 ◽  
Vol 20 (1) ◽  
pp. 202-214
Author(s):  
M. Abdel Wahab ◽  
S. Tiachacht ◽  
A. Bouazzouni ◽  
S. Khatir ◽  
A. Behtani ◽  
...  

2015 ◽  
Author(s):  
Dustin Yewell Harvey ◽  
Eric Brian Flynn ◽  
Stuart Glynn Taylor ◽  
Charles Reed Farrar ◽  
Octavio Jr. Ramos ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Can He ◽  
Jianchun Xing ◽  
Juelong Li ◽  
Qiliang Yang ◽  
Ronghao Wang ◽  
...  

Optimal sensor placement (OSP) is an important part in the structural health monitoring. Due to the ability of ensuring the linear independence of the tested modal vectors, the minimum modal assurance criterion (minMAC) is considered as an effective method and is used widely. However, some defects are present in this method, such as the low modal energy and the long computation time. A new OSP method named IAGA-MMAC is presented in this study to settle the issue. First, a modified modal assurance criterion (MMAC) is proposed to improve the modal energy of the selected locations. Then, an improved adaptive genetic algorithm (IAGA), which uses the root mean square of off-diagonal elements in the MMAC matrix as the fitness function, is proposed to enhance computation efficiency. A case study of sensor placement on a numerically simulated wharf structure is provided to verify the effectiveness of the IAGA-MMAC strategy, and two different methods are used as contrast experiments. A comparison of these strategies shows that the optimal results obtained by the IAGA-MMAC method have a high modal strain energy, a quick computational speed, and small off-diagonal elements in the MMAC matrix.


2011 ◽  
Vol 328-330 ◽  
pp. 350-353
Author(s):  
Zhi Hao Zhou ◽  
Qi Lin Zhang ◽  
Hui Zhu Yang ◽  
Lu Chen

Shanghai Center Tower is the tallest skyscraper under construction in China with the height of 642 meters. In order to reflect the real structural status of Shanghai Center Tower during the construction period and running period in three dimensional graphics, a Structural Health Monitoring Software System (SHMSS) is developed. The CAE software system consists of three function modules such as Modeling module, Data Management module, Post-Processing module. The Modeling module could build a 3D model confirming to the real Shanghai Center Tower based on the Building Information Modeling (BIM) concept; the Data Management module could access the engineering data produced by the sensors; then in the Post -Processing module, various data about the Shanghai Center Tower could be processed and structural parameters such as member force, displacement, wind pressure would be displayed in the 3D model.


2018 ◽  
Vol 20 (2) ◽  
pp. 1272-1272 ◽  
Author(s):  
M. Abdel Wahab ◽  
S. Tiachacht ◽  
A. Bouazzouni ◽  
S. Khatir ◽  
A. Behtani ◽  
...  

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