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Distance Learning at the MS and PhD Levels in the Nuclear and Radiation engineering program, Nuclear and Applied Robotics, materials science and engineering and Walker department of mechanical engineering at the University of Texas at Austin

Distance Learning at the MS and PhD Levels in the Nuclear an...

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2023 Transactions of the American Nuclear Society Winter Conference and Expo, ANS 2023

作者： Landsberger1, Sheldon Charlton, William Clamo, Kevin Ezekoye, Ofodike Kovar, Desiderio Haas, Derek Pryor, Mitchell University of Texas at Austin Nuclear and Radiation Engineering Program Nuclear Engineering Teaching Lab 10100 Burnet Road Pickle Research Campus R-9000 AustinTX United States Walker Department of Mechanical Engineering University of Texas at Austin 204.Dean Keeton ETC II 5.160 AustinTX United States The University of Texas at Austin Materials Science and Engineering Walker Department of Mechanical Engineering 204 Dean Keeton ETC II 5.100 AustinTX United States

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A high-entropy rare-earth phosphate and its principle single component REPO_(4)for environmental barrier coatings

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Journal of Advanced Ceramics 2025年第3期14卷 103-119页

作者： Bishnu Pada Majee Keith Bryce Liping Huang Jie Lian Department of Materials Science and Engineering Rensselaer Polytechnic InstituteNY 12180USA Department of Mechanical Aerospace and Nuclear EngineeringRensselaer Polytechnic InstituteNY 12180USA

Xenotime rare-earth(RE)phosphates are emerging as promising materials for environmental barrier coatings(EBCs)for SiC-based ceramic-matrix composites(CMCs)because of their close coefficients of thermal expansion(CTEs)and resistance to calcium-magnesium-alumina-silicate(CMAS)*** this work,high-entropy(HE)(Sc_(0.2)Lu_(0.2)Yb_(0.2)Er_(0.2)Y_(0.2))PO_(4) and five single-component REPO4(RE=Sc,Lu,Yb,Er,and Y)compounds were synthesized,and their stability,thermal properties,and CMAS corrosion resistance were *** CTE values of four REPO_(4) compounds(RE=Lu,Yb,Er,and Y;~(5.6-6)×10^(−6)℃^(−1))are close to those of SiC-CMC((4.5-5.5)×10^(−6)℃^(−1)),whereas ScPO_(4)(6.98×10^(−6)℃^(−1))and HE(5RE_(0.2))PO_(4)(6.39×10^(−6)℃^(−1))have slightly higher values in the temperature range of 200-1300℃.HE phosphate has the lowest thermal conductivity due to its size and mass *** CMAS corrosion tests at 1300℃ for 5,45,and 96 h revealed that all RE phosphates formed a continuous and dense reaction layer predominantly composed of Ca_(8)MgRE(PO_(4))_(7),effectively impeding CMAS ***,REPO_(4) with smaller RE³−cations displays a slower reaction rate and reduced corrosion kinetics,as evidenced by the smaller thickness of the reaction layer.A larger negative difference in the optical basicity(OB)value between REPO_(4) and CMAS signifies greater corrosion resistance.A mechanistic understanding of CMAS corrosion and elucidation of the effects of critical parameters such as the ionic mass and ionic radius of RE elements on their thermal properties and CMAS corrosion kinetics are useful for the development of novel xenotime-type phosphates as EBCs for SiC-CMCs.

关键词： environmental barrier coatings(EBCs) rare-earth(RE)phosphate coefficients of thermal expansion(CTEs) thermal conductivity calcium-magnesium-alumina-silicate(CMAS)corrosion

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Machine learning approach for predicting optical and photothermal properties of gold nanoparticle/polymer hybrid films:Effect of synthetic data

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Nano Research 2025年第3期18卷 347-359页

作者： Yi Je Cho Harrison Chaney Kathy Lu Department of Materials Science and Engineering Virginia Polytechnic Institute and State UniversityBlacksburgVA 24061USA Department of Advanced Materials Science and Engineering Sunchon National UniversitySuncheon-siJeollanam-do 57922Republic of Korea Department of Mechanical and Materials Engineering University of Alabama at BirminghamBirminghamAL 35294USA

Emerging machine learning(ML)approaches have been adopted in various material systems to predict novel properties with the assistance of the corresponding large *** new materials,however,collecting sufficient data points for model training is not feasible,which is the case for gold nanoparticle/polymer hybrid *** this study,an ML approach coupled with finite element modeling was proposed for predicting the optical and photothermal properties of gold nanoparticle/polymer hybrid *** datasets of the optical and photothermal properties were built using results from the ***,finite element analyses were conducted to generate synthetic data to satisfy the quality and quantity of the data required for training *** analysis and model training were performed using the datasets with and without synthetic data to evaluate their effects on predicting the performance of the ML *** relative importance of features to targets(properties)was evaluated by correlation *** models with high accuracy were obtained by training various models from conventional to newly developed ***,weaknesses,and improvement of the synthetic data addition were *** proposed workflow and framework offer reliable prediction of optical and photothermal properties over different combinations of gold nanoparticles and polymer matrices,which can be extended to include more features related to processing parameters and microstructures.

关键词： machine learning gold nanoparticle polymer hybrid film optical property photothermal property finite element modeling

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Studying the Impact of T4 and T6 Heat Treatments on Corrosion and mechanical Properties of 6082-Al Alloy Treated with Al-5Ti-1B Grain Refiner

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Journal of Bio- and Tribo-Corrosion 2025年第1期11卷 1-13页

作者： Abd El-Aziz, Kh. Saber, D. Materials Engineering Department Faculty of Engineering Zagazig University Zagazig44519 Egypt Mechanical Engineering Department College of Engineering Taif University Taif Saudi Arabia Industrial Engineering Program Mechanical Engineering Department College of Engineering Taif University Taif Saudi Arabia

The mechanical and corrosion characteristics of aluminum alloys can be influenced not only by the addition of grain refiners but also by heat treatment that modifies the microstructure and introduces variations in these characteristics. The purpose of this work was to examine how the mechanical properties and corrosion resistance of 6082-Al alloy with Al-5Ti-1B grain refiner are affected by both artificial and natural aging heat treatments. By using the permanent mold casting process, the required specimens of the investigated alloys were produced. A VHS-1000 microhardness testing apparatus is used to measure microhardness at a 100 g load. A sliding wear test is carried out using a pin-on-disk apparatus. Potentiodynamic polarization curves in a 3.5 weight percent NaCl solution are used to assess the corrosion behavior of every specimen. The current results revealed that the mechanical properties improved markedly with the additions of Al–5Ti-1B grain refiner to the investigated alloy, this is maybe due to the microstructure changes as a result of grain refiner additions. Although the addition of Al-5Ti-1B grain refiner to 6082-Al alloy improved the hardness and wear resistance, it showed a negative influence on the corrosion resistance of these alloys. The results also demonstrated that, when compared to as-cast condition, artificial heat treatment of 6082-Al alloy inoculated by Al-5Ti-1B grain refiner improved their hardness, wear resistance, and corrosion properties significantly. Furthermore, compared to natural aging heat treatment, artificial aging heat treatment demonstrated a noticeably improved level of hardness, wear, and corrosion behavior. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Aluminum corrosion

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Texture development and surface reconstruction of BiVO_(4)photoanode via one-pot hydrothermal reaction for enhanced photoelectrochemical water splitting

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Journal of Advanced Ceramics 2025年第3期14卷 133-141页

作者： Sung Won Hwang Yoo Jae Jeong Runfa Tan Indhujasri Saravanan Hyun Soo Han Dong Hoe Kim In Sun Cho Department of Energy Systems Research Ajou UniversitySuwon 16499Republic of Korea Department of Material Science&Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Mechanical Engineering Stanford UniversityStanford 94305USA Department of Material Science&Engineering Korea UniversitySeoul 02841Republic of Korea Materials Science and Engineering Program University of Colorado BoulderBoulder 80303USA

The simultaneous optimization of the bulk and surface characteristics of photoelectrodes is essential to maximize their photoelectrochemical(PEC)*** report a novel one-pot hydrothermal synthesis of textured and surface-reconstructed BiVO_(4)photoanodes(ts-BVO),achieving significant improvements in PEC water *** controlling precursor molarity and ethylene glycol(EG)addition,we developed a stepwise dual reaction(SDR)mechanism,which enables simultaneous bulk texture development and surface *** optimized CoBi/ts-BVO photoanode exhibited a photocurrent density of 4.3 mA∙cm^(−2)at 1.23 V *** hydrogen electrode(RHE)with a high Faradaic efficiency of 98%under one sun *** with nontextured BiVO_(4),the charge transport efficiency increased from 8%to 70%,whereas the surface charge transfer efficiency improved from 9%to 85%.These results underscore the critical role of both bulk and surface engineering in enhancing PEC *** findings offer a streamlined approach for improving the intrinsic properties of photoanodes in solar water splitting.

关键词： BiVO_(4) hydrothermal texture surface reconstruction ethylene glycol(EG) photoelectrochemical water splitting

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Technical and economic feasibility analysis of a subsea shuttle tanker for CO2 transport to the troll field

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Marine Systems and Ocean Technology 2025年第1期20卷 1-15页

作者： Doust, Arash Shahbazi Undstad, Fredrik Hovden Klis, Pawel Xing, Yihan Ma, Yucong Faculty of Science and Technology Department of Mechanical and Structural Engineering and Materials Science University of Stavanger Stavanger4021 Norway

The Subsea Shuttle Tanker (SST) was presented by the authors as an innovative and cost-effective solution in several research works. This new approach offers a viable alternative to subsea pipelines and shuttle tanker ships for transporting liquid CO2 from onshore facilities to marginal offshore reservoirs. A previous technical–economic feasibility study found that the SST is generally economically competitive to the subsea pipelines and shuttle tanker ships for distances below 180 km and CO2 transport volumes of one million tons per annum (mtpa). The economic cost models are based on those developed in Maritime UN-manned Navigation through Intelligence in Network (MUNIN) D 9.3 and the Zero Emission Platform (ZEP) projects. This paper will take this previous study further by focusing on performing the technical and economic feasibility analysis for operation in the Troll field on the Norwegian continental shelf (NCS), which has a transport distance of 65 km and a CO2 volume of 1.5 mtpa. Two SST design solutions are investigated by downscaling and upscaling the reference baseline design to evaluate SST’s technical feasibility. Using the abovementioned cost models, the CO2 transportation cost per ton using SST is compared with subsea pipelines and tanker ships. The numerical results show that it is economically feasible to manufacture SST with cargo capacities of 4453 m3 and 2203 m3. Furthermore, the results show that the SST is the most cost-effective option for transporting low-volume CO2 (1.5 mtpa) over short distances. © The Author(s) 2025.

关键词： Cost effectiveness

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Low-cost chemical surface smoothing of CO2 laser-etched acrylic using WELD ON 4 acrylic solvent cement

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International Journal of Advanced Manufacturing Technology 2025年第5期138卷 2245-2255页

作者： Moncada, Luis H. Safaripour, Samira Hutter, Tanya Walker Department of Mechanical Engineering The University of Texas at Austin AustinTX78712 United States Materials Science and Engineering Program and Texas Materials Institute The University of Texas at Austin AustinTX78712 United States

With the increasing use of micro-manufactured devices and the demand for low-cost fabrication techniques, this study presents a simple and scalable surface polishing method for laser etched acrylic using WELD-ON 4 acrylic solvent cement, a solvent typically used for bonding thermoplastics. The method’s effectiveness was evaluated by treating acrylic samples up to three times and analyzing changes in transparency, surface roughness average (Ra), luminescence, and wettability. Results show that even a single treatment significantly improved surface smoothness, reduced light scattering, and brought contact angle and optical clarity closer to those of unetched acrylic. After three treatments, the surface became isotropic, with laser-etched lines disappearing. Specifically, a 60% reduction in Ra was observed in the direction perpendicular to the etched lines, while the parallel direction initially showed a similar trend, followed by a slight increase attributed to the formation of surface irregularities caused by the re-solidification of dissolved acrylic. Contact angle measurements indicated that the surface remained hydrophilic, with controllable wettability based on the number of treatments. Overall, this method provides a low-cost, cleanroom-free solution for improving the surface finish of laser-fabricated acrylic components. Its compatibility with complex or recessed geometries makes it particularly suitable for microfluidic devices and other precision applications requiring both optical clarity and controlled surface properties. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2025.

关键词： Carbon dioxide lasers

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Real-Time Detection of Sub-ppm Aromatic Compounds in Alcohol by Surface Plasmon Resonance Using Label-Free Graphene

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Energy & Environmental materials 2025年第1期8卷 146-154页

作者： Sung Hwan Cho Jun Min Suh Wontaek Kim Jaehyun Kim Yeong Jae Kim Tae Hyung Lee Jae Young Kim Jaegun Sim Seung Won Choi Byung Hee Hong So Young Kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Department of Mechanical Engineering Massachusetts Institute of Technology Infra Analysis Team Global Manufacturing & Infra Technology Samsung Electronics Department of Chemistry Seoul National University

The increasing importance of high-purity isopropyl alcohol(IPA) in semiconductor processing technology has led to a higher demand for technologies capable of detecting impurities in I *** accurate and various impurity detection technologies have been developed,most of them have limitations in real-time and repeatable detection of ***,for the first time,surface plasmon resonance(SPR) sensor was developed utilizing graphene transferred Au film(Au/graphene) to detect sub-ppm levels of 2,4-dinitrophenol(2,4-DNP) dissolved in IPA and this sensor demonstrates the ability to detect 2,4-DNP in real-time with great reversibility.

关键词： density functional theory graphene liquid sensor surface plasmon resonance π–π stacking interaction

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Deformation Behavior of Commercially Pure Titanium Subjected to Blast Assisted Deformation: New Insights on f112̅1g Extension Twinning

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materials Transactions 2025年第5期66卷 521-531页

作者： Bisht, Anuj Subburaj, Janardhanraj Jagadeesh, Gopalan Suwas, Satyam Department of Mechanical and Industrial Engineering Indian Institute of Technology Roorkee Roorkee India Department of Aerospace Engineering Indian Institute of Science Bangalore India Department of Materials Engineering Indian Institute of Science Bangalore India

In the present work, the microstructure and texture evolution in commercially pure titanium subjected to blast assisted deformation has been investigated by means of electron backscattered diffraction and transmission electron microscopy. The evolved texture in the deformed material is primarily attributed to the dominant h1¯010i 64.4° contraction twinning. Other deformation twins were also observed in a low fraction. A uniform dislocation background with other microstructural features observed suggested the formation of a superimposed microstructure in the material. f112¯1g extension twins (ET2) with a thick uniform pile-up of dislocation along its boundary have formed in the material. Parts of ET2 have detwinned leaving gaps along the twin length, revealing the unstable nature of ET2 twins. The in-depth microstructural analysis reveals the ET2 twin formation mechanism, where the instability developed in the material due to progressive lattice rotation via accumulative slip is relieved by ET2 twin formation by atomic shuffling. The gaps (local detwinning) observed in the present case is attributed to the transient oscillatory response of the material under impulsive loading, which has been previously reported in the literature. ©2025 The Japan Institute of Metals and materials.

关键词： High resolution transmission electron microscopy

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Review of Recent Advancements in 3D Printing Technologies for Textile Applications

Textile and Leather Review

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Textile and Leather Review 2025年 8卷 72-104页

作者： Lemi, Muleta Tiki Lemu, Hirpa Gelgele Gutema, Endalkachew Mosisa Department of Mechanical and Structural Engineering and Materials Science Faculty of Science and Technology University of Stavanger StavangerN-4036 Norway Department of Mechanical Engineering College of Engineering &Technology Wollega University P.O. Box 395 Nekemte Ethiopia

3D printing (3DP) ranks as one of the more advanced methods in the manufacturing sector. All of the industrial sectors, including automobiles, medical services, aviation, athletics, fabrics, apparel, and fashion industries, have noticed an increase in the use of this approach for prototyping. In the past decade, 3DP technology has been applied in several industries by academics, textile technologists, designers of apparel, manufacturers, and suppliers. Textiles perform numerous purposes in addition to meeting the basic human need to protect the body. The textile industry has expanded its horizons with the incorporation of 3DP technology. This paper's goal is to present an integrated overview of the recent state of research to identify the most advanced 3DP techniques, materials, and applications currently used in the clothing and textile sectors. Fundamentals of basic textile substrates, numerous textile-related 3DP technologies, printing methods, materials for print inks, direct printing of 3D elements on different textile surfaces, and the impacts, benefits and limitations of 3D printed textile structure fabrication techniques are all addressed. It also emphasizes the ways 3DP technology will be used in the textile sector moving forward. Overall, the purpose of this issue of Textile Progress is to identify the potential of 3DP, which, despite certain limits, may improve the products of the fashion and textile sectors and encourage future scientists and designers to continue additional research. © 2025, idd3. All rights reserved.

关键词： Textile industry

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