Banca de DEFESA: BRUNO LOBO VAZ DE CARVALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : BRUNO LOBO VAZ DE CARVALHO
DATA : 11/12/2019
HORA: 08:00
LOCAL: Escola Politécnica
TÍTULO:

EXPERIMENTAL STRESS ANALYSIS USING COPUTER VISION TECHNIQUES

PALAVRAS-CHAVES:

Computer Vision, Digital Image Correlation, Meshless Method, Moving Least
Squares, LSF

PÁGINAS: 115
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
ESPECIALIDADE: Mecânica das Estruturas
RESUMO:

Numerical analyzes are constantly advancing in the field of structural engineering. Using
the advantages of today’s computing, increasingly complicated advanced programs are
being modelled in a more simply and quickly way, leading to very reliable results for
the current sizing of structural designs. Experimental analysis, although, did not achieve
the same advance not even worth as much as the benefits of computing. Gradually
being known in the field, the Digital Image Correlation technique has shown excellent
performance for experimental stress analysis by comparing images at successive loading
stages. Concomitantly, a subarea of artificial intelligence, denominated Computer Vision,
it is constantly used in various areas of knowledge to recognize patterns in images and
obtain important information from them, such as biometrics, for example. Recently was
perceived the interdisciplinary of this area with structural mechanics through the work of
Gonzáles (2010 and 2014) using the SIFT technique combined with a Meshless Method for
numerical-experimental analysis. The present work used computational vision algorithms
such as CLAHE, FAST and SIFT for evaluation, coupled with smoothing through Moving
Least Squares Method in a vector approach involving problems related to cold formed LSF
profiles, which is growing in Brazilian Civil Engineering. All steps were programmed in
their own code in the C and C ++ languages, dismissing the need for additional software in
processing or even preprocessing, only using the post processing GID software for viewing
the stress fields. To validate the code, artificially modified images were simulated and
ASTM A-36 reinforced U-section steel profiles were tested in the structural laboratory.

MEMBROS DA BANCA:
Interno - 2479068 - ALBERTO BORGES VIEIRA JUNIOR
Interno - 1333000 - RODRIGO SERNIZON COSTA
Externo ao Programa - 1988620 - RUBISLEY DE PAULA LEMES