Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
STUDY OF THE INFLUENCE OF STEEL STRIPS WIDTH IN THE BRAZILIAN TEST
Submission Author:
Nadine Machado Ficher , RS , Brazil
Co-Authors:
Nadine Machado Ficher, Francisco Santos, Matthews Bandeira, Camila Cardoso, Ederli Marangon, Luis Kosteski
Presenter: Nadine Machado Ficher
doi://10.26678/ABCM.COBEM2019.COB2019-0770
Abstract
The Brazilian Test, or splitting test, is a method used to determine, in an indirect way, the tensile strength of materials such as concrete, asphalt mixtures, rocks, soils, among others. The test consists of applying a compressive load to cylindrical specimens. The compression load is applied along the length of the cylinder by auxiliary elements, that vary according to the standard and the material studied. Although the transfer mode of loading varies according to the studied material, the calculation of the maximum resistance is the same in all cases, because the theory that bases the method does not consider the influence of the material used in the application process of the loading. The main objective of this study is to evaluate the influence of steel strips width used as load transfer auxiliary elements. For this propose is used digital image correlation to analyze the crack pattern and, indirectly, the distribution of the resulting stresses in the specimens. It was possible to identify that the change in the width of the strips of steel directly influences the results, mainly due to shearing at the contact ends. It was also possible to conclude that the origin of the main crack does not coincide with the center of the cylinder in several tests, which indicates that the rupture did not occur as predicted by the theory underlying the method.
Keywords
Brazilian test, strips of steel, Digital Image Correlation (DIC)
