Development of a biaxial tensile device in the plane for monotonic mechanical tests and cruciform specimens / Desenvolvimento de um dispositivo de tração biaxial no plano para ensaios mecânicos monotônicos e de corpos de prova cruciformes

Abstract

This work deals with the development of a coupling device for performing biaxial tensile tests with cruciform specimens. For the project, a methodology consisting of six phases was used, that is, informational design, conceptual design, preliminary design, detailed design, manufacturing and testing. Thus, the design and sizing of two coupling devices was carried out, and the model chosen for manufacturing was based on that proposed by Rohr, Harwick, and Nahme. In addition, the design, sizing and fabrication of cruciform specimens in MDF and PS, with geometry similar to that of ISO 16842:2014, was also carried out for the device validation tests. The tests were divided into 1) device stiffness test and 2) specimen deformation test for equibiaxial testing. The proposed test setup was designed to test cruciform specimens with dimensions up to 350 x 350 x 4 mm and support a maximum vertical load of up to 30 kN.