Programa del congreso

This work focuses on designing and developing a 3-UPS parallel mechanism for passive rehabilitation of lateral ankle sprains in ball sport athletes. The study analyzes the high incidence of this musculoskeletal injury and its functional and social impact. The proposed mechanism seeks to accurately replicate the physiological movements of the ankle through the integration of advanced inverse kinematics methods and screw theory. The required ranges of motion were defined to ensure adequate recovery, prioritizing the safety and effectiveness of the device. Additionally, the singularities and workspace of the mechanism were explored to optimize its performance and avoid critical configurations. The results highlight the mechanism's ability to meet the physiological ranges of the ankle, its portability requirements, and the necessary structural robustness. This development provides an accessible and efficient solution to enhance rehabilitation and prevent future complications, such as chronic instability.

This article addresses the characterization of the mechanical properties of a photosensitive resin commonly used in the additive manufacturing process of plastic parts by stereolithography (SLA) used in engineering education experiments. The study aimed to compare didactically for engineering education the results of material characterization experimentally through tensile and flexural tests with the simulated results through the finite element method.

The increase in sustainable and responsible
approaches in industries has been driven by the current global
social and economic context. The pursuit of greater competitiveness
and reduction of operational costs has favored the development of
areas such as smart manufacturing, energy management and
efficiency, sustainability, and compliance. In this context, this
article presents an application of MCDM tools (AHP and TOPSIS)
to support the equipment selection process. Three 3D printers from
different models and manufacturers were considered, analyzed
regarding seven selection criteria: equipment price, printing
volume, maximum printing speed, maximum extruder temperature,
number of extruders, maximum power, and type. Based on the
opinion of an expert, the alternatives were ranked. A comparison
was presented between the results obtained with the application of
AHP-TOPSIS. The use of these methods significantly contributed
to the decision-making process, allowing for a more
comprehensive, transparent, and objective analysis of the different
characteristics of each equipment.

This paper presents a method that allows verifying the
safety of operating multilayer pressure vessels when nozzle
inspection that allows inserting ultrasonic testing equipment which
is commonly known as Non-Destructive Examination (NDE) is not
possible for such a purpose. In this context, strain gages were used
to obtain strain values of the material related to stresses to which it
is subjected by means of a pressurizing test. Once geometric
characteristics and mechanical properties of the pressure vessel
under study were known, it was possible to apply mechanics of
materials concepts and obtain the biaxial state of principal stresses,
thus inferring the actual thickness value of the accumulator.
Moreover, it was possible to verify that although the use of strain
gages takes longer than the ultrasound test, its degree of precision is
remarkable and its applicability much wider, since geometric factors
are not particularly concerning the shrinkage which occurs between
the vessel layers. The data were also evaluated analytically and using
finite element simulation, which demonstrated consistency with the
results obtained by extensometry.

The objective of this work is to design and optimize a grain milling system based on solar energy, using a parabolic dish and a Stirling engine as key elements of the system. The main problem lies in the dependence on human power for grain processing, which generates inefficiency and limits production in rural environments. The proposed system uses a parabolic dish to concentrate solar radiation and generate enough heat to drive a Stirling engine. This, in turn, converts thermal energy into mechanical energy to power a grain mill. Through proper material selection, efficient parabolic dish design and integration of the Stirling engine with the mechanical transmission system, it is hoped to achieve a sustainable system that minimizes the need for human intervention, maximizes energy efficiency and provides a capacity continuous grinding of at least 80 kg/hour. Preliminary results indicate the technical and economic viability of the project, with the potential to be implemented in areas with high solar radiation.

This CNC laser cutting machine can process up to three units per minute while ensuring high precision. The system combines mechanical and electronic components that are optimized for efficiency, featuring an Arduino-based control unit and a tailored G-code generation method to streamline workflow and reduce material waste. Notable features include a sturdy structural framework, automated calibration, and a flexible control system guaranteeing accuracy and repeatability. Furthermore, the research investigates methods to lessen the environmental impact of laser cutting by fine-tuning operational parameters. This machine is especially well-suited for educational settings and small-scale manufacturing, offering a cost-effective alternative to high-priced industrial CNC systems. Future efforts aim to enhance automation, incorporate AI-driven predictive models for improved cutting precision, and refine component selection for better performance.