Diseño y construcción de un dispositivo para caracterizar las propiedades mecánicas de materiales metálicos y plásticos a través de la técnica de excitación por impulso

This report explains the design, construction, methodology and results obtained from the characterization of the mechanical properties of materials, in accordance with the international standard ASTM E1876-01. The measurement method consists of a device that acts as a support for the sample of material, which is impulsively excited by the effect of a solenoid; finally, by audio capture and digital signal processing in the MATLAB® software, three mechanical characteristics of said material sample are obtained (Young's modulus, Shear modulus and the estimated Poisson ratio). After comparing the standardized values with the experimentally obtained values, it was obtained: for the Young modulus there are errors less than 20% and with an average error of 10%, for the shear modulus there are errors less than 49% and with an average error of 25% and for the estimated Poisson coefficient there are errors greater than 27% and with an average error of 56%. In order to obtain more precise results, it is recommended to pay special attention to the geometry and mass of the sample used, as well as the measuring instruments and the positioning of the components

• Autores: Higuita Caro, Paulina; Echavarría Rúa, David Alonso
• Fecha de publicación: 2020
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/7965
• Acceso en línea: http://hdl.handle.net/10819/7965
• Palabra clave: Características mecánicas de materiales; Módulo de young; Módulo cortante; Coeficiente de Poisson; Modo de vibración flexural; Modo de vibración torsional; Transformada discreta de fourier; Generador de impulsos; Mechanical characteristics of materials; Young's modulus; Shear modulus; Poisson's ratio; Flexural vibration mode; Torsional vibration mode; Discrete fourier transform; Impulse generator; Materiales (ingenierías)
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia