Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Preliminary constituent analysis for the manufacture of a composite with active potential
Submission Author:
João Pedro Rodrigues Deodato , CE
Co-Authors:
João Pedro Rodrigues Deodato, Ramon Rudá Brito Medeiros, Talita Rebouças de Araújo Cortez, Michelle Queiroz Nunes , Zoroastro Vilar, Rodrigo Nogueira de Codes
Presenter: Rodrigo Nogueira de Codes
doi://10.26678/ABCM.COBEM2023.COB2023-1072
Abstract
Active composites give us the ability to obtain structures that are able to adapt to the changes in their environment, changing their properties in certain operational circumstances. These properties are desirable in increasingly advanced technological applications, such as compact, powerful and lightweight actuators in devices for various segments, such as biomedicine, oil and gas, aerospace industry, automotive, mechatronics, and electronics. In this study, a polymer reinforced with glass fiber (GFRP) was fabricated and characterized, together with the thermomechanical characterization of wires made of a shape memory alloy (SMA) of Ni-Ti, with the aim of incorporating the wires into this matrix for the manufacture of an active composite. The studies and characterizations of the constituents are presented, such as the thermal analysis of the synthesis of the resin, through the thermogravimetric technique (TG), the Ni-Ti wire was characterized through the electrical resistance x temperature test (RET). From these analyses, the Thermal Deflection Temperature of the resin (HDT) and the phase transformation temperatures of the Ni-Ti wire could be obtained. For the mechanical characterization of the components, tensile tests were performed on the wire, the resin, and the composites, with the help of the digital image correlation technique (DIC), which was used to obtain information about the deformation, the behavior of the modulus of elasticity, and the limit of resistance to tensile stress of all the components. With the results obtained, it was verified that the Thermal Deflection Temperature of the resin and the phase transformation temperatures of the wire allow for the incorporation of the wire into the composite, and that the Ni-Ti wire exhibited a considerable increase in the value of stiffness during heating, making it possible to construct the design of a composite that has the ability to transfer and measure the load between the Ni-Ti wires and the GFRP.
Keywords
Composite, Digital Image Correlation (DIC), characterization, Shape Memory Alloy, Thermomechanical analysis
