UNT College of Engineering - 34 Matching Results

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open access

Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator

Description: This article focuses on a way to maximize the concentration acceptance product (CAP), while using the minimum SOE and receiver geometry at a given f-number and incidence angle (also referred to as the tracking error angle). The laws of polychromatic light refraction along with trigonometry and spherical geometry were utilized to optimize the POE grooves, SOE radius, receiver size, and SOE–receiver spacing.
Date: July 8, 2019
Creator: Qandil, Hassan; Wang, Shuping & Zhao, Weihuan
open access

Application-based design of the Fresnel lens solar concentrator

Description: Article investigates a novel genetically themed hierarchical algorithm (GTHA) to design Fresnel lens solar concentrators that match with the distinct energy input and spatial geometry of various thermal applications.
Date: August 2, 2019
Creator: Qandil, Hassan; Wang, Shuping & Zhao, Weihuan
open access

Evaluation Results of an E and ET Education Forum

Description: This article discusses evaluation results of an Engineering (E) and Engineering Technology (ET) education forum at the University of Houston. A central focus to these discussions revolved around whether Engineering and Engineering Technology exist as separate fields or whether there was value in thinking about them as part of a continuum.
Date: 2011
Creator: Ramos, Miguel; Chapman, Lauren; Cannady, Mac & Barbieri, Enrique
open access

Experimental Determination of Residual Stresses Generated by Single Point Incremental Forming of AlSi10Mg Sheets Produced Using SLM Additive Manufacturing Process

Description: This article focuses on investigating the residual stress values associated with a part fabricated by Selective Laser Melting technology (SLM) when this is subjected further to forces on single point incremental forming (SPIF) operation of variable wall angle.
Date: December 13, 2018
Creator: López, Cecilio; Elías-Zúñiga, Alex; Jiménez, Isaac; Martínez-Romero, Oscar; Siller Carrillo, Héctor Rafael & Diabb, José
open access

Experimental Study of Back Wall Dross and Surface Roughness in Fiber Laser Microcutting of 316L Miniature Tubes

Description: This article uses extensive experimentation to evaluate the effect of fiber laser micro-cutting parameters over average surface roughness and back wall dross in AISI 316L stainless steel mixture tubes.
Date: December 26, 2017
Creator: García-López, Erika; Medrano-Tellez, Alexis G.; Ibarra-Medina, Juansethi R.; Siller Carrillo, Héctor Rafael & Rodríguez, Ciro A.
open access

Hydrostatic High-Pressure Post-Processing of Specimens Fabricated by DLP, SLA, and FDM: An Alternative for the Sterilization of Polymer-Based Biomedical Devices

Description: This article assesses the effects of sterilization in materials manufactured using additive manufacturing by employing a sterilization technique used in the food industry.
Date: December 13, 2018
Creator: Robles Linares-Alvelais, José; Figueroa-Cavazos, J. Obedt; Chuck-Hernandez, C.; Siller Carrillo, Héctor Rafael; Rodríguez, Ciro A. & Martínez-López, J. Israel
open access

On B.S.E and B.S.ET for the Engineering Profession

Description: Article discussing biological systems engineering (B.S.E.) and a proposed model for baccalaureate programs for engineering education.
Date: 2010
Creator: Barbieri, Enrique; Attarzadeh, Farrokh; Pascali, Raresh; Shireen, Wajiha & Fitzgibbon, William
open access

Permeability Study of Austenitic Stainless Steel Surfaces Produced by Selective Laser Melting

Description: In this article, permeability properties and surface roughness of stainless steel (SS316L) surfaces were evaluated through experimentation with three different laser scanning patterns (chessboard, meander, and stripe), and different sloping angles between the fabricated surface and the laser beam incident on the process. Results showed that for each scanning pattern, the roughness decreased as the sloping angle increased consistently in all experimental trials.
Date: November 24, 2017
Creator: Segura-Cardenas, Emmanuel; Ramírez-Cedillo, Erick; Sandoval-Robles, Jesús Alejandro; Ruiz-Huerta, Leopoldo; Caballero-Ruiz, Alberto & Siller Carrillo, Héctor Rafael
open access

Polymeric Materials Reinforced with Multiwall Carbon Nanotubes: A Constitutive Material Model

Description: This article discusses the modification of an existing material model to take into account softening and residual strain effects observed in polymeric materials reinforced with carbon nanotubes when subjected to loading and unloading cycles.
Date: July 16, 2013
Creator: Córdova, René K.; Elías-Zúñiga, Alex; Elizalde, Luis E.; Siller Carrillo, Héctor Rafael; Sánchez, José Antonio; Rodríguez, Ciro A. et al.
open access

Process planning guidelines in selective laser melting for the manufacturing of stainless steel parts

Description: Article presents several process planning guidelines as a result of a selective laser melting (SLM) process calibration for a selected material (stainless steel 316L), with the intention of contributing in process parameters selection in net shape manufacturing.
Date: August 3, 2018
Creator: Ramírez-Cedillo, Erick; Sandoval-Robles, Jesús A.; Ruiz-Huerta, Leopoldo; Caballero-Ruiz, Alberto; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
open access

Rapid Fabrication of Disposable Micromixing Arrays Using Xurography and Laser Ablation

Description: This article presents a novel split-and-recombine (SAR) array design adapted for interfacing standardized dispensing (handheld micropipette) and sampling (microplate reader) equipment.
Date: May 4, 2017
Creator: Martínez-López, J. Israel; Betancourt, H. A.; García-López, Erika; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
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