Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ELABORATION OF HIGH PRESSURE TORSION DEVICE ADAPTED TO A COMPRESSION TESTING MACHINE AND INTEGRATED BY A TRANSMISSION SYSTEM
Submission Author:
Marcell Ferreira , MG , Brazil
Co-Authors:
Marcell Ferreira, Adriano Trajano
Presenter: Adriano Trajano
doi://10.26678/ABCM.COBEM2019.COB2019-0536
Abstract
Acquisition of laboratory testing equipment might be expensive for an academic institution or a company. Therefore, this article presents the project of High Pressure Torsion (HPT) testing equipment adapted to 200T capacity compression testing machine; the project is developed in 3D CAD software virtual environment. In short, HPT is a Severe Plastic Deformation (SPD) material forming technique. HPT processing is considered the best SPD technique in terms of decreasing the crystallographic grain size down to nanoscale. Generally speaking, during the HPT processing, a small cylindrical sample of polycrystalline material is simultaneously submitted to compressive and torsional stress without fracture due to plastic deformation. The designing methodology of the equipment takes into account main technical parameters required during the sample processing, like torque, hydrostatic pressure, sample diameter, and material types. To dimension the components of the project, the analytical methods and finite element analysis based on theory of machine elements were employed. One of the fundamental features of the proposed HPT equipment is that the twisting moment applied to the specimen is transmitted using spur gear train. A movement system with linear guides is used to remove the projected components from the compression testing machine, thus allowing performing two different tests in the same equipment.
Keywords
Severe Plastic Deformation (SPD), High Pressure Torsion (HPT), Mechanical Project of HPT Equipment
