Ciencias Exactas y Ciencias de la Salud

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Evaluation of carbon fiber reinforced polymer composites produced by additive manufacturing for design guidelines
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2018-05-11) Naranjo Lozada, Juan Miguel; Ahuett Garza, Horacio; Orta Castañon, Pedro; Kurfess, Thomas; Urbina Coronado, Pedro
The use of additive manufacturing (AM) in many industries start to be a trend. The flexibility to manufacture complex geometries and the development of new AM materials and systems open new research fields. Recently, a family of technologies that produce fiber reinforced components has been introduced, widening the options available to designers. To find optimal structures using new AM technologies, guidelines for the design of 3D printed composite parts are needed. This thesis presents an evaluation of the effects that different geometric parameters have on the tensile properties of 3D printed composite. Two methods for manufacturing 3D printing composites, chopped and continuous fiber reinforcement (CFR), were analyzed. Parameters such as infill density and infill geometric patterns of chopped composite material, as well as fiber volume fraction and fiber arrangement of CFR composites are varied. The effect of the location of initial deposit point of reinforcement fibers on the tensile properties of the test specimens is also explored. From the findings, some design guidelines are proposed. Using these guidelines two application cases for Industry 4.0 systems were completed. A variation of the Rule of Mixtures (ROM) that provides a way to estimate the elastic modulus of a 3D printed composites is presented. Findings may be used by designers to define the best construction parameters for 3D printed composite parts.
Convergence of Industry 4.0 and Regenerative Engineering to boost development of scaffolds created by hybrid additive manufacturing
(2017-12-05) Camargo Camrgo, Belinda; Rodríguez González, Ciro Ángel; Romero Díaz, David Carlos
Industry 4.0 and its underlying technologies, such as Internet of Things (IoT) and Cyber-Physical Systems (CPS), are usually portrayed as a way to enable communication in a workshop between the machinery and an intelligent control system, handle consumer demand for customized products, achieve a near-zero defect manufacturing process, and handle materials, energy consumption, and waste more efficiently, amongst others. Case studies on how the automotive, electronics, or aerospace industry benefit from Industry 4.0 implementation are readily available and surely, there are more to come. By contrast, scaffolds of Regenerative Engineering, are still in Research and Development and yet to be approved as a commercial regenerative procedure. A thorough analysis of the requirements was developed and the product manufacturing phases were modeled using Unified Modeling Language (UML). Business, structure, activity, class, and sequence diagrams, amongst others, are modeled using this standard and an ontology that converges Industry 4.0 technologies applied on Regenerative Engineering is established under the Ontology Web Language Description Logic (OWL-Dl). An architecture to augment a scaffold manufacturing cell with Industry 4.0 technologies is proposed. By using smart sensors, actuators, and the information they generate, a database with material and process variables is populated. This database can then be analyzed by smart algorithms to find the most effective parameters to manufacture a successful scaffold for tissue regeneration. Initial testing shows the feasibility of the proposed architecture and its ability to store relevant information of the produc
Development of methodological process to customize and manufacture cranial implants with high density polyethylene by means of Single Point Incremental Forming
(2017-04) Salas Luna, Eduardo; Martínez Romero, Oscar; Perales Martínez. Imperio Anel; Zuñiga, Alex Elías; Caro Osorio, Enrique
The aim of the present thesis is to evaluate the feasibility of manufacturing customized cranial implants applying the Single Point Incremental Forming (SPIF) technique on a bio compatible polymer such as High Density Poly Ethylene (HDPE). The following research focuses on a CAD/CAM aided process that will help to find the optimal parameters to secure the best precision of the manufactured piece. This technique offers a sustainable, cheap and highly accurate process that will allow a bigger number of patients the possibility to have access to a high quality, aesthetic prosthesis that will improve their life quality

Ciencias Exactas y Ciencias de la Salud

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