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Particle Swarm Optimization of Printing Parameters for Open-source TIG-based Metal 3D Printing

Chinese journal of Mechanical Engineering(Additive Manufacturing Frontiers) 2022年第4期1卷 27-35页

作者： Shane Oberloier wilson j holmes Luke A Reich joshua M Pearce Department of Electrical&Computer Engineering Michigan Technological UniversityHoughtonMI 49931USA Department of Mechanical Engineering–Engineering Mechanics Michigan Technological UniversityHoughtonMI 49931USA Department of Electrical&Computer Engineering Ivey Business SchoolWestern UniversityLondonN6A 5B9Canada

Proprietary metal 3D printing is still relegated to relatively expensive systems that have been constructed over years of expensive trial-and-error to obtain optimum 3D printing ***-cost open-source metal 3D printers can potentially democratize metal additive manufacturing;however,significant resources are required to redevelop optimal printing parameters for each metal on new *** this study,the particle swam optimization(PSO)experimenter,a free and open-source software package,is utilized to obtain the optimal printing parameters for a tungsten inert gas-based metal open source 3D *** software is a graphical user interface implementation of the PSO method and is designed specifically for hardware-in-loop *** uses the input of experimental variables and their respective ranges,and then proposes iterations for experiments.A custom fitness function is defined to characterize the experimental results and provide feedback to the algorithm for low-cost metal additive *** separate trials are performed to determine the optimal parameters for 3D ***,an experiment is designed to deposit and optimize the parameters for a single ***,the parameters for a single-layer plane is optimized ***,the optimal printing parameters for a cube is determined ***,the line optimization experiment is revised and reconducted using different shield gas *** results and limitations are presented and discussed in the context of expanding wire arc additive manufacturing to more systems and material classes for distributed digital manufacturing.

关键词： Metal 3D printing Additive manufacturing Tungsten inert gas welding TIG welding Particle swarm optimization RepRap

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Detecting Concentration of Analytes with DETECHIP: A Molecular Sensing Array

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journal of Sensor Technology 2013年第3期3卷 94-99页

作者： Hannah johnke Gary Batres Mark wilson Andrea E. holmes Sharmin Sikich Department of Chemistry Doane College Crete USA

DETECHIP is a detection system made of various sensors that has been shown to detect and discriminate between small molecules of interest, including various illicit and over-the-counter drugs. Previously, detection was normalized to a single concentration of analyte. Now this detection assay can detect concentration differences in analytes via red, green, and blue color value changes and shifts in the UV-Vis spectra of the assay. To determine the concentrations differences, the exposed assays were scanned on a flatbed scanner and the images were analyzed for individual RGB values with a custom macro in Imagej, an image analysis program. Increasing concentrations of the analyte resulted in greater differences in color values between control and analyte wells. These differences showed a linear relationship to concentration change, some with correlation coefficients greater than 98%. This work expands the capability of DETECHIP to give information about the concentration of analyte when the analyte identity is known.

关键词： Colorimetric Arrays Sensors Analyte Concentration RGB Analysis Drug Detection

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Reactive Arrays of Colorimetric Sensors for Metabolite and Steroid Identification

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journal of Sensor Technology 2014年第1期4卷 1-6页

作者： Gary Batres Talia jones Hannah johnke Mark wilson Andrea E. holmes Sharmin Sikich Department Chemistry Doane College Crete USA

The work described herein examines a rapid mix-and-measure method called DETECHIP suitable for screening of steroids and metabolites. The addition of steroids and metabolites to reactive arrays of colorimetric sensors generated characteristic color “fingerprints” that were used to identify the analyte. A color analysis tool was used to identify the analyte pool that now includes biologically relevant analytes. The mix-and-measure arrays allowed the detection of disease metabolites, orotic acid and argininosuccinic acid;and the steroids androsterone, 1,4-androstadiene, testosterone, stanozolol, and estrone. The steroid 1,4-androstadiene was also detected by this method while dissolved in synthetic urine. Some of the steroids, such as androstadiene, stanozolol, and androsterone were co-dissolved with (2-hydroxypropyl)-β-cyclodextrin in order to increase solubility in aqueous buffered solutions. The colorimetric arrays do not intend to eliminate ELISA or mass spectroscopy based screening, but to possibly provide an alternative analytical detection method for steroids and metabolites.

关键词： Colorimetric Arrays Sensors Color Changes Steroids Metabolic Disease Metabolites Detection

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Synthesis of a Fluorophore with Improved Optical Brightness

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International journal of Organic Chemistry 2013年第4期3卷 256-261页

作者： Macduff Okuom Mark wilson jordan Groathouse junsik Lee Dave Symonsbergen Casey Gustafson Mitch Trauernicht Homar Barcena Cassie Reicks Sharmin Sikich Raychelle Burks Andrea holmes Chemistry Department Doane College Crete USA Novel Chemical Solutions Crete USA

The synthesis and characterization of a novel fluorophore(1), with potential application as an optical brightener are reported. This compound was prepared by reacting 4,4-diaminostilbene-2,2-disulfonic acid with cyanuric chloride in the presence of Na2CO3 followed by the addition of trityl aniline. Solution and solid state fluorescence demonstrated a strong blue/purple emission centered at 450 nm. 1H-NMR spectroscopy, mass spectrometry analysis, elemental analysis, and DOSY-NMR were used for the characterization of the fluorophore.

关键词： Optical Brightener Fluorophore Diaminostilbene Cyanuric Chloride Optical Brightness

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ENVIRONMENTAL ISSUES FACING BATTERY MANUFACTURERS

ENVIRONMENTAL ISSUES FACING BATTERY MANUFACTURERS

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5th International Meeting on Lithium Batteries

作者： Curtis F.holmes wilson Greatbatch Limited 10000 Wehrle DriveClarenceNY 14031 USA

＜正＞Battery manufacturers face a variety of concerns regarding the handling,storing,and disposal of the materials used in battery *** the United States of America, several major environmental laws have been passed which directly affect the manner in which batteries must be designed and *** manufacturers are responsible for the proper handling and disposal of any hazardous materials used in cell construction. The penalties for violation of environmental laws are very severe,and all manufacturers and importers of batteries in the United States must take sufficient measures to insure that these laws are obeyed.

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