Application-based design of the Fresnel lens solar concentrator (open access)

Application-based design of the Fresnel lens solar concentrator

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
Object Type: Article
System: The UNT Digital Library
Structural design optimization of knee replacement implants for Additive Manufacturing (open access)

Structural design optimization of knee replacement implants for Additive Manufacturing

Article describes study focused on proposing a setup of a proper methodology for the rapid development of optimized surgical implants.
Date: July 18, 2019
Creator: Peto, Marinela; Ramírez-Cedillo, Erick; Hernández, Adriana & Siller Carrillo, Héctor Rafael
Object Type: Article
System: The UNT Digital Library
Algorithmically Optimized Hemispherical Dome as a Secondary Optical Element for the Fresnel Lens Solar Concentrator (open access)

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

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
Object Type: Article
System: The UNT Digital Library
Nanoindentation behavior of high entropy alloys with transformation-induced plasticity (open access)

Nanoindentation behavior of high entropy alloys with transformation-induced plasticity

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.
Object Type: Article
System: The UNT Digital Library
Experimental Determination of Residual Stresses Generated by Single Point Incremental Forming of AlSi10Mg Sheets Produced Using SLM Additive Manufacturing Process (open access)

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

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: November 13, 2018
Creator: López, Cecilio; Elías-Zúñiga, Alex; Jiménez, Isaac; Martínez-Romero, Oscar; Siller Carrillo, Héctor Rafael & Diabb, José
Object Type: Article
System: The UNT Digital Library
Hydrostatic High-Pressure Post-Processing of Specimens Fabricated by DLP, SLA, and FDM: An Alternative for the Sterilization of Polymer-Based Biomedical Devices (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

This article assesses the effects of sterilization in materials manufactured using additive manufacturing by employing a sterilization technique used in the food industry.
Date: November 14, 2018
Creator: Robles Linares-Alvelais, José; Figueroa-Cavazos, J. Obedt; Chuck-Hernandez, C.; Siller Carrillo, Héctor Rafael; Rodríguez, Ciro A. & Martínez-López, J. Israel
Object Type: Article
System: The UNT Digital Library
Process planning guidelines in selective laser melting for the manufacturing of stainless steel parts (open access)

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

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
Object Type: Article
System: The UNT Digital Library
Study of the fabrication of AISI 316L microneedle arrays (open access)

Study of the fabrication of AISI 316L microneedle arrays

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.
Object Type: Article
System: The UNT Digital Library
Experimental Study of Back Wall Dross and Surface Roughness in Fiber Laser Microcutting of 316L Miniature Tubes (open access)

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

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: September 18, 2017
Creator: García-López, Erika; Medrano-Tellez, Alexis G.; Ibarra-Medina, Juansethi R.; Siller Carrillo, Héctor Rafael & Rodríguez, Ciro A.
Object Type: Article
System: The UNT Digital Library
Permeability Study of Austenitic Stainless Steel Surfaces Produced by Selective Laser Melting (open access)

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

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
Object Type: Article
System: The UNT Digital Library
Rapid Fabrication of Disposable Micromixing Arrays Using Xurography and Laser Ablation (open access)

Rapid Fabrication of Disposable Micromixing Arrays Using Xurography and Laser Ablation

This article presents a novel split-and-recombine (SAR) array design adapted for interfacing standardized dispensing (handheld micropipette) and sampling (microplate reader) equipment.
Date: February 28, 2017
Creator: Martínez-López, J. Israel; Betancourt, H. A.; García-López, Erika; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
Object Type: Article
System: The UNT Digital Library
Experimental Investigation and Design Method for the Shear Strength of Self-Piercing Rivet Connections in Thin-Walled Steel Structures (open access)

Experimental Investigation and Design Method for the Shear Strength of Self-Piercing Rivet Connections in Thin-Walled Steel Structures

This article presents an experimental investigation on the shear strength of self-piercing rivet connections used in thin-walled steel structures.
Date: August 30, 2016
Creator: Yan, Weiming; Xie, Zhiqiang; Yu, Cheng; Song, Linlin & He, Haoxiang
Object Type: Article
System: The UNT Digital Library
Experimental study and finite element analysis of energy dissipating outriggers (open access)

Experimental study and finite element analysis of energy dissipating outriggers

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
Object Type: Article
System: The UNT Digital Library
Optomechanical Design for Precision Lens Positioning and Mounting (open access)

Optomechanical Design for Precision Lens Positioning and Mounting

This article presents a lens positioning and mounting in a few microns accuracy using a kinematic mount module.
Date: August 25, 2016
Creator: Wang, Shuping; Zhang, Chi; Alt, Mark; Davis, Colleen; Gardner, Michael L. & Ji, Zheng
Object Type: Article
System: The UNT Digital Library
Seismic Response and Engineering of Cold-formed Steel Framed Buildings (open access)

Seismic Response and Engineering of Cold-formed Steel Framed Buildings

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.
Object Type: Article
System: The UNT Digital Library
Xurography as a Rapid Fabrication Alternative for Point-of-Care Devices: Assessment of Passive Micromixers (open access)

Xurography as a Rapid Fabrication Alternative for Point-of-Care Devices: Assessment of Passive Micromixers

This article evaluates the viability of xurography as a rapid fabrication tool for the development of ultra-low cost microfluidic technology for extreme Point-of-Care (POC) micromixing devices.
Date: February 20, 2016
Creator: Martínez-López, J. Israel; Mojica, Mauricio; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
Object Type: Article
System: The UNT Digital Library
Optical method for distance and displacement measurements of the probe-sample separation in a scanning near-field optical microscope (open access)

Optical method for distance and displacement measurements of the probe-sample separation in a scanning near-field optical microscope

This article presents an alternative optical method to determine the probe-sample separation distance in a scanning near-field optical microscope.
Date: May 18, 2016
Creator: Santamaria, L.; Garcia-Ortiz, C. E.; Siller Carrillo, Héctor Rafael; Cortes, R. & Coello, V.
Object Type: Article
System: The UNT Digital Library
Influence of PEEK Coating on Hip Implant Stress Shielding: A Finite Element Analysis (open access)

Influence of PEEK Coating on Hip Implant Stress Shielding: A Finite Element Analysis

This article proposes a design concept for hip implants, using a combination of metallic stem with a polymer coating.
Date: October 6, 2015
Creator: Anguiano-Sanchez, Jesica; Martínez-Romero, Oscar; Siller Carrillo, Héctor Rafael; Díaz-Elizondo, José A.; Flores-Villalba, Eduardo & Rodríguez, Ciro A.
Object Type: Article
System: The UNT Digital Library
Development and Application of a Simplified Model for the Design of a Super-Tall Mega-Braced Frame-Core Tube Building (open access)

Development and Application of a Simplified Model for the Design of a Super-Tall Mega-Braced Frame-Core Tube Building

This article discusses the development and application of a simplified nonlinear model to compare two design schemes of a super-tall mega-braced frame-core tube building.
Date: December 16, 2014
Creator: Lu, Xinzheng; Xie, Linlin; Yu, Cheng & Lu, Xiao
Object Type: Article
System: The UNT Digital Library
Direct Strength Method for Web Crippling of Cold-Formed Steel C- and Z-Sections Subjected to One-Flange Loading (open access)

Direct Strength Method for Web Crippling of Cold-Formed Steel C- and Z-Sections Subjected to One-Flange Loading

This article presents the development of a semi-analytical design approach for the web crippling strength using the Direct Strength Method concept.
Date: October 13, 2015
Creator: Dara, Martin & Yu, Cheng
Object Type: Article
System: The UNT Digital Library
A Low-Cost Energy-Efficient Cableless Geophone Unit for Passive Surface Wave Surveys (open access)

A Low-Cost Energy-Efficient Cableless Geophone Unit for Passive Surface Wave Surveys

This article presents a hardware design for a low-cost energy-efficient geophone system to better facilitate field applications of the passive surface wave survey.
Date: September 25, 2015
Creator: Dai, Kaoshan; Li, Xiaofeng; Lu, Chuan; You, Qingyu; Huang, Zhenhua & Wu, H. Felix
Object Type: Article
System: The UNT Digital Library
Shaking Table Tests of Low-Rise Shear Walls Made of Recycled Aggregate Concrete (open access)

Shaking Table Tests of Low-Rise Shear Walls Made of Recycled Aggregate Concrete

This article investigates the dynamic behavior of shear walls made of recycled aggregate concrete (RAC).
Date: March 20, 2015
Creator: Zhang, Jianwei; Dong, Hongying; Cao, Wanlin & Yu, Cheng
Object Type: Article
System: The UNT Digital Library
Intelligent Metamodel Integrated Verilog-AMS for Fast and Accurate Analog Block Design Exploration (open access)

Intelligent Metamodel Integrated Verilog-AMS for Fast and Accurate Analog Block Design Exploration

Patent relating to a method for modeling a circuit comprising storing a plurality of design variable ranges for a circuit component in a non-transient electronic data memory.
Date: March 12, 2014
Creator: Mohanty, Saraju P.; Kougianos, Elias & Zheng, Geng
Object Type: Patent
System: The UNT Digital Library
Review of biomechanical studies of arteries and their effect on stent performance (open access)

Review of biomechanical studies of arteries and their effect on stent performance

This article aims to summarize part of the available literature that reports studies on biomechanical environment in healthy and diseased arteries using various analytical methods.
Date: April 26, 2014
Creator: Fortier, Aleksandra; Gullapalli, Vikranth & Mirshams, Reza A.
Object Type: Article
System: The UNT Digital Library