Oscar Araque
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View article: Impact of Printing Angle and Layer Height on the Mechanical Strength of PLA Reinforced with Chopped Carbon Fibres Using FDM 3D Printing
Impact of Printing Angle and Layer Height on the Mechanical Strength of PLA Reinforced with Chopped Carbon Fibres Using FDM 3D Printing Open
This research addresses the inherent limitations of low mechanical strength in FDM-printed materials by studying Carbon Fibre-reinforced Polylactic Acid (PLA-CF) composites. The low strength limitation of PLA-CF in FDM requires identifying…
View article: Technological Advances in the Diagnosis of Cardiovascular Disease: A Public Health Strategy
Technological Advances in the Diagnosis of Cardiovascular Disease: A Public Health Strategy Open
This article reviews technological advances and global trends in the diagnosis, treatment, and monitoring of cardiovascular diseases. A bibliometric analysis was conducted using the SCOPUS database, following PRISMA-ScR guidelines, to iden…
View article: Analyzing the Use of Embedded MATLAB® Laboratory Problems in an Online Interactive Textbook
Analyzing the Use of Embedded MATLAB® Laboratory Problems in an Online Interactive Textbook Open
Many first-year engineering problem-solving courses have a goal of encouraging students to learn software skills as one of a myriad of tools in solving engineering problems. In these courses, MATLAB® is the programming language often taugh…
View article: Evaluating the benefits of adding interactive elements to traditional print mechanical engineering textbooks
Evaluating the benefits of adding interactive elements to traditional print mechanical engineering textbooks Open
Even before the COVID-19 pandemic changed the methods of course delivery for many universities to hybrid or online-only classes, engineering students did not tend to read the textbooks. Traditional print engineering textbooks are typically…
View article: High-Quality Text Descriptions of Visual Elements in Online Interactive Versions of Traditional Print Mechanical Engineering Textbooks
High-Quality Text Descriptions of Visual Elements in Online Interactive Versions of Traditional Print Mechanical Engineering Textbooks Open
Even before the Covid-19 pandemic, there was an increased utilization of online course materials. Circumstances created by the pandemic increased the need for high quality online course content. These online course materials should comply …
View article: Microstructure and Mechanical Characterization of Rice Husks from the Tolima Region of Colombia
Microstructure and Mechanical Characterization of Rice Husks from the Tolima Region of Colombia Open
The under-utilization of rice husk, a milling by-product, demands attention due to its widespread disposal and limited usage. This research aims to assess the physical properties and mechanical behavior of three rice husk varieties (F 2000…
View article: Mechanical Fracture of Aluminium Alloy (AA 2024-T4), Used in the Manufacture of a Bioproducts Plant
Mechanical Fracture of Aluminium Alloy (AA 2024-T4), Used in the Manufacture of a Bioproducts Plant Open
Aluminium alloy (AA2024-T4) is a material commonly used in the aerospace industry, where it forms part of the fuselage of aircraft and spacecraft thanks to its good machinability and strength/weight ratio. These characteristics allowed it …
View article: Mechanical Behavior of Briquettes Made from a Mixture of Sawdust and Rice Husks for Commercialization
Mechanical Behavior of Briquettes Made from a Mixture of Sawdust and Rice Husks for Commercialization Open
The development of this research work seeks to determine the mechanical behavior of the compacted mixture of pine sawdust and rice husk by varying the mass percentages of these biomasses obtained in briquettes, with the purpose of being ma…
View article: Optimal design of leaf springs for vehicle suspensions under cyclic conditions
Optimal design of leaf springs for vehicle suspensions under cyclic conditions Open
The suspension systems are designed to provide good performance in terms of comfort and maneuverability and to satisfy other requirements such as fatigue strength. This study focuses on the leaf springs, a classic mechanism; leaf springs a…
View article: Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust
Experimental Study on the Mechanical Properties of Biomass Briquettes from a Mixture of Rice Husk and Pine Sawdust Open
In search of guaranteeing global energy requirements, waste from different agricultural, forestry and industrial sources is presented as a renewable and sustainable energy source. The manufacture of solid fuels from biomass based on the de…
View article: Modeling and experimental validation of the vibration in an unbalance multi-stage rotor
Modeling and experimental validation of the vibration in an unbalance multi-stage rotor Open
This work proposes a finite element method model to predict lateral vibration phenomena arising in the multi-stage rotor (seven stages) with unbalance, including damping and gyroscopic effects. The rotor dynamic analysis includes mathemati…
View article: Prediction of fatigue life for a transverse fillet welded joint and analysis of the influence of crack eccentricity on the failure
Prediction of fatigue life for a transverse fillet welded joint and analysis of the influence of crack eccentricity on the failure Open
In this paper a procedure based on the Finite Element Method and Linear Elastic Fracture Mechanics to obtain a mathematical model of crack propagation in transverse fillet welded joints is presented. We used ASTM-A36 steel plates and E6013…
View article: Computational modeling of fatigue crack propagation in butt welded joints subjected to axial load
Computational modeling of fatigue crack propagation in butt welded joints subjected to axial load Open
This article addresses the study of crack behavior elicited on axial fatigue in specimens joined by butt weld made of steel ASTM A36 by using fracture mechanics and simulation software of finite elements (Ansys APDL, Franc3D). The computat…
View article: Design of a fatigue test bench in rotary flexion to evaluate the behavior to cyclical loads
Design of a fatigue test bench in rotary flexion to evaluate the behavior to cyclical loads Open
The development of this article shows the process of design, construction and start-up of a fatigue machine in rotary flexion. Fatigue is a subject of considerable relevance and requires adequate equipment for its study, therefore it is so…
View article: The Effect of Weld Reinforcement and Post-Welding Cooling Cycles on Fatigue Strength of Butt-Welded Joints under Cyclic Tensile Loading
The Effect of Weld Reinforcement and Post-Welding Cooling Cycles on Fatigue Strength of Butt-Welded Joints under Cyclic Tensile Loading Open
This research deals with the fatigue behavior of butt-welded joints, by considering the geometry and post-welding cooling cycles, as a result of cooling in quiet air and immersed in water. ASTM A-36 HR structural steel was used as the base…
View article: Weld Magnification Factor Approach in Cruciform Joints Considering Post Welding Cooling Medium and Weld Size
Weld Magnification Factor Approach in Cruciform Joints Considering Post Welding Cooling Medium and Weld Size Open
The objective of this research is to develop an experimental-theoretical analysis about the influence of the cooling medium and the geometry of the welding bead profile in fatigue life and the associated parameters with structural integrit…
View article: Weld Magnification Factor Approach in Cruciform Joints Considering Post Welding Cooling Medium and Weld Size
Weld Magnification Factor Approach in Cruciform Joints Considering Post Welding Cooling Medium and Weld Size Open
The objective of this research is to develop an experimental-theoretical analysis about the influence of the cooling medium and the geometry of the welding bead profile in fatigue life and associated parameters with structural integrity of…
View article: Dynamic modeling and analysis of gyroscopic multibody systems and flexible robots
Dynamic modeling and analysis of gyroscopic multibody systems and flexible robots Open
The dissertation presents dynamic modeling and analysis of single rigid bodies, gyroscopic multi-body systems, and flexible robotics through the use of the moving frame method. Before analyzing the projects at hand, a brief introduction to…