Innovación y tecnología
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DR. RAFAEL CARRERA ESPINOZA, DR. PABLO MORENO GARIBALDI, DR. MELVYN ÁLVAREZ VERA, DAMIÁN GUTIERREZ SOSA, ISMAEL LÓPEZ RODRÍGUEZ, VALERIA LÓPEZ LÓPEZ, FRANCISCO JAVIER ROMERO ÁLVAREZ
Dr. Rafael Carrera Espinoza, Dean of the School of Engineering. Dr. Pablo Moreno Garibaldi, Academic Director of the Industrial and Mechanical Engineering program Dr. Melvyn Álvarez Vera, full-time professor at Universidad de las Américas Puebla since 2021. Damián Gutierrez Sosa, Mechanical Engineering graduate at Universidad de las Américas Puebla and Honors Program member. Ismael López Rodríguez, undergraduate Mechanical Engineering student at Universidad de las Américas Puebla and Honors Program member. Valeria López López, Mechanical Engineering graduate at Universidad de las Américas Puebla as an Honors Program member. Francisco Javier Romero Álvarez, undergraduate student in Mechatronics, Robotics, and Automation Engineering at Universidad de las Américas Puebla and Honors Program member.
DESIGN AND FABRICATION OF A PIN ON DISC under standard G99-01 and with diamond indenter
T
he following article presents the development of a pin on disc machine that works under standard astm G99. The outline for its parameters was established according to the necessities and the characteristics of the design when it is compared with the competitions. Also, an implement was added to allow it to increase the pressure contact of area, resulting in bigger stresses. This was the case for the spherical tungsten carbide 85.035 MPa, while, for the diamond indenter, it was 410.29 MPa. Henceforth, this changed the wear mechanism, from abrasion to a combined effect of abrasion and micro-ploughing. In the study of the mechanical properties of a material, friction is a common characteristic to measure. However, it is not a simple task since there are a lot of variables that can affect the final measure. Machines that can determine the force friction and the coefficient of friction have been developed. These instruments are called tribometers (Hidalgo et al., 2022). To normalize the process to determine the measure of coefficient of friction and wear rate values, the standard astm G99 is used to determine the main characteristics of design (astm International, n. d.). There is another mechanism to characterize materials, a scratch test is useful to determine the resistance to abrasion and wear for a lot of different materials (Saba, Jawaid & Sultan, 2018). Parameters for load, distance, and humidity are mentioned in astm c-1624 (astm International, n. d.). However, there is no information that exposes the uses of a scratch test using the configuration of a pin on a disc machine. Hence, the aim of this work is to develop a machine that can perform an standardized pin on disc test, with the chance to use, in the same configuration, a diamond indenter to increase the contact and wear damage, by changing the wear mechanism from only abrasion present by the spherical tungsten carbide to abrasion and