Patents and Technological Developments
Patents
Dispositivo y metodología para determinar la respuesta macro y micromecánica de elastómeros sometidos a tracción biaxial por indentación esférica.
Patente Otorgada Título 406831
The aim of this work was to develop a methodology and a mechanical tester to determine the macro- and micromechanical behaviours of elastomers under biaxial tension by spherical indentation. Combining the Yang and Begley models, in addition to the experimental data obtained from our mechanical tester, a new methodology to understand the mechanical response of elastomers was obtained.
This patent was developed with the colaboration of Dra. I. M. Garnica-Palafox, Dra. M. Álvarez-Camacho.
Sistema Opto-mecánico y metodología para evaluar el comportamiento macro y micromecánico de materiales suaves y tejidos biológicos.
Patente otorgada Título No. 345455.
An apparatus designed for tensile tests of soft and thin materials, incorporating optical and mechanical devices, allows for obtaining the mechanical behavior of the tissue samples. Using both, digital image correlation (DIC) and random laser emission analysis, the apparatus provides information regarding the response of the bovine pericardium under different stress levels. Our results show that changes in the spectral features of the random laser correlate well to the mechanical response obtained with conventional uniaxial tensile analysis coupled with digital image correlation.
This patent was obtained with the colaboration of Celso Briones Herrara, Dr. N. Cuando Espitia, and Dr. Juan Hernádez Cordero .
Technological Developments
Planar biaxial test system to evaluate soft materials under a plane biaxial state of stress.
The main objetive of this work was to obtain a device to evaluate mechanical response of of natural or synthetic polymeric membranes undergoing a biaxial state of stress caused by plane strain. This proyect was developed by one BSc. student: Isis Ibis Arreola Valdez. She designed and manufactured the tester and also she did the instrumentation and programmed the virtual instrument or software to operate the this biaxial tester.
Now this tester is also a powerful tool in our resarch group to determine the elastic properties of natural or synthetic polymeric membranes considreng two perpendicular directions simultanueosly.
Multifunctional module.
In this technological development, a multifunctional module was designed, consisting of two main systems. The first is a uniaxial tester with the dimensions required to perform the mechanical characterization of soft, small-sized samples fabricated in a bioprinter; this is, in fact, the second configuration that this multifunctional device can adopt. A third configuration is possible by integrating a CCD camera with an optical lens, thereby configuring the device as an instrument for determining the contact angle through the sessile drop method.
Bulge inflation tester to evaluate the mechanical behavior of natural or synthetic polymeric membranes.
The main objetive of this work was to obtain a device to evaluate mechanical response of of natural or synthetic polymeric membranes undergoing a biaxial state of stress caused by internal pressure. This proyect was developed by two BSc. students: Aljenadro Rodríguez Prado and Oscar Fabián Jiménez Sánchez. Aljandro designed and manufactured the tester and Oscar did the instrumentation and programmed the software to operate the tester.
Now this tester is a powerful tool in our resarch group to determine the elastic properties of natural or synthetic polymeric membranes.
Mechanical tester to evaluate the micro and macromechanical behaviors of complex materials.
The main objetive of this work was to obtain a device to evaluate the macro and micromechanical behaviors of some hiperelastic materials. It involved the mechanical desing, manufacture, instrumentation as well as the programming of a computational interface to operate the device.
This work was developed by Daniel Flores, who obtain his BSc. with this challenging proyect.