APLICAÇÃO DA CORRELAÇÃO DE IMAGEM DIGITAL NO ESTUDO DO COMPORTAMENTO ESTRUTURAL DE VIGAS DE CONCRETO ARMADO SEM ARMADURA TRANSVERSAL

Abstract

The construction industry has experienced technological advances in data acquisition, storage, processing, utilization and transmission. Among the range of existing methods, digital image correlation (DIC) is an optical technique that measures displacements and deformations of a surface through digital image processing and has become one of the most promising technologies for monitoring structural integrity. Unlike conventional measurement techniques, DIC is a versatile and cost-effective tool for structural analysis in civil engineering, making it an attractive option. In this context, the methodology of this work combines the DIC with the study of steel fibers reinforced concrete, monitoring the propagation and measuring the relative displacements of critical shear cracks. This approach enables the application of robust models based on well-founded theories, rather than empirical variables adjusted by experiments. The experimental research presented in this work highlights the benefits of using DIC, such as the monitoring of the cracking process and measuring with digital extensometers. This enables a more accurate analysis of the structural integrity of concrete, with and without steel fibers, helping to prevent potential structural failures that can result in significant repair and maintenance costs.