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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
Partner: UNT College of Engineering
open access

Study of the fabrication of AISI 316L microneedle arrays

Description: Article describes a study in which a micro milling process was used to manufacture AISI 316L stainless steel needles arrays with a conical geometry (i.e., a base diameter and height of 1 mm by 1 mm, respectively), and an analysis of tool wear on ball nose micro end milling tools with a diameter of ~200 μm was performed to evaluate the use of lubricant in the manufacture of those conical surfaces.
Date: August 3, 2018
Creator: García-López, Erika; Siller Carrillo, Héctor Rafael & Rodríguez, Ciro A.
Partner: UNT College of Engineering
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
Partner: UNT College of Engineering
open access

Nanoindentation behavior of high entropy alloys with transformation-induced plasticity

Description: Article describes an experiment where nanoindentation of three metastable dual-phase high entropy alloys (HEAs) was performed to obtain their inherent elastoplastic deformation responses.
Date: April 29, 2019
Creator: Sinha, S.; Mirshams, Reza; Wang, Tianhao; Nene, S. S.; Frank, M.; Liu, K et al.
Partner: UNT College of Engineering
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
Partner: UNT College of Engineering
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
Partner: UNT College of Engineering
open access

Stress-Softening and Residual Strain Effects in Suture Materials

Description: This article focuses on the formulation of a constitutive equation to predict Mullins and residual strain effects of buna-N, silicone, and neoprene rubber strings subjected to small transverse vibrations.
Date: September 4, 2013
Creator: Elías-Zúñiga, Alex; Baylón, Karen; Martínez-Romero, Oscar; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
Partner: UNT College of Engineering
open access

Stress-Softening and Residual Strain Effects in Suture Materials

Description: This article focuses on the experimental characterization of suture material samples of MonoPlus, Monosyn, polyglycolic acid, polydioxanone 2–0, polydioxanone 4–0, poly(glycolide-co-epsilon-caprolactone), nylon, and polypropylene when subjected to cyclic loading and unloading conditions.
Date: May 20, 2013
Creator: Elías-Zúñiga, Alex; Montoya, Beatriz; Ortega, Wendy; Flores-Villalba, Eduardo; Rodríguez, Ciro A.; Siller Carrillo, Héctor Rafael et al.
Partner: UNT College of Engineering
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
Partner: UNT College of Engineering
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
Partner: UNT College of Engineering
open access

Seismic Response and Engineering of Cold-formed Steel Framed Buildings

Description: This article discusses a North American effort which formed as part of the NSF Network for Earthquake Engineering Simulation (NEES), known as Enabling Performance-Based Seismic Design of Multi-Story Cold-Formed Steel Structures (CFS-NEES), as it addresses seismic performance-based design for cold-formed steel framed buildings.
Date: May 26, 2016
Creator: Schafer, B. W.; Ayhan, D.; Leng, J.; Liu, P.; Padilla-Llano, D.; Peterman, K. D. et al.
Partner: UNT College of Engineering
open access

Experimental study and finite element analysis of energy dissipating outriggers

Description: This article uses experiments and finite element analyses to study the structural responses and energy dissipation capacities of three different outriggers of an actual tall building project.
Date: November 11, 2016
Creator: Yang, Qingshun; Lu, Xinzheng; Yu, Cheng & Gu, Donglian
Partner: UNT College of Engineering
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.
Partner: UNT College of Engineering
open access

Study of performance of high speed turning using the volumetric dimension coefficient of resultant cutting force

Description: This article describes the experimental study of the resultant cutting force evolution of two coating carbide and a cermet inserts, during the dry turning of AISI 1045 steel with 400, 500, and 600 m/min cutting speeds.
Date: July 2013
Creator: Hernández-González, L. W.; Pérez-Rodríguez, R.; Zambrano-Robledo, P. C.; Siller Carrillo, Héctor Rafael & Toscano-Reyes, H.
Partner: UNT College of Engineering
open access

Study of PVD AlCrN Coating for Reducing Carbide Cutting Tool Deterioration in the Machining of Titanium Alloys

Description: This article studies a thin nanocomposite film made out of AlCrN (aluminum-chromium-nitrite) to show experimental work in the deposition process and its characterization.
Date: May 24, 2013
Creator: Cadena, Natalia L.; Cue-Sampedro, Rodrigo; Siller Carrillo, Héctor Rafael; Arizmendi-Morquecho, Ana M.; Rivera-Solorio, Carlos I. & Di-Nardo, Santiago
Partner: UNT College of Engineering
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