Banca de DEFESA: Wilson Emilio David Sanchez

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Wilson Emilio David Sanchez
DATE: 26/01/2023
TIME: 14:00
LOCAL: Plataforma Teams
TITLE:

METHODOLOGY FOR STRUCTURAL HEALTH MONITORING OF CIVIL CONSTRUCTION PROJECTS BASED ON SYNCHROSQUEEZED WAVELET TRANSFORM.

KEY WORDS:

Structural health monitoring; Modal properties identification; Damage detection; Synchrosqueezed Wavelet Transform; Benchmark examples.

PAGES: 114
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

Many buildings around the world are aging, suffering damage from various factors, and presenting serious structural problems. Knowing the health state of these structures is a challenge for engineering and a necessity for countries and entities in order to optimize resource management. Thus, damage detection methodologies based on Structural Health Monitoring (SHM) have gained prominence in the last two decades. SHM provides real-time information about the health of a structure via data collected via a sensor network. In this work, a methodology for SHM based on Synchrosqueezed Wavelet Transform (SWT) is proposed. The proposed methodology consists of three steps: (1) noise elimination, (2) signal processing, and (3) processing of the results. The robustness of the proposed methodology was tested on two reference structures: the Benchmark Phase I designed by the SHM group of IASC-ASCE and the Tianjin Yonghe Bridge monitored by the Harbin Institute of Technology. The accuracy in the identification of natural frequencies and the number of sensors involved in the acquisition of the records were established as efficiency criteria. The results obtained show that the proposed methodology is reliable for structural health monitoring. The calculated natural frequencies were very close to the reference values in both structures analyzed. Moreover, the proposed methodology identified all the frequency content from a single record, i.e., using only one sensor.

BANKING MEMBERS:
Presidente - 707.843.298-34 - JOSE LUIS VITAL DE BRITO - UFRGS
Interna - 1225412 - GRACIELA NORA DOZ DE CARVALHO
Interno - 1550512 - RODRIGO DE MELO LAMEIRAS
Externo à Instituição - ROBERTO LEAL PIMENTEL - UFPB
Externo à Instituição - ZENÓN JOSÉ GUZMÁN NÚÑEZ DEL PRADO - UFG