检索结果-内蒙古大学图书馆

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

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

来源：评论

学校读者我要写书评

暂无评论

Unveiling the size effect of nitrogen-doped carbon-supported copper-based catalysts on nitrate-to-ammonia electroreduction

引用

Nano Research 2024年第4期17卷 2438-2443页

作者： Ran Li Taotao Gao Wenxi Qiu Minghao Xie Zhaoyu Jin Panpan Li College of Materials Science and Engineering Sichuan UniversityChengdu 610065China Institute for Advanced Study Chengdu UniversityChengdu 610106China Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at AustinAustinTexas 78712USA Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

The electrocatalytic nitrate reduction reaction(NitRR)represents a promising approach toward achieving economically and environmentally sustainable ***,it remains a challenge to regulate the size effect of electrocatalysts to optimize the catalytic activity and ammonia ***,the Cu-based catalysts were tailored at the atomic level to exhibit a size gradient ranging from single-atom catalysts(SACs,0.15–0.35 nm)to single-cluster catalysts(SCCs,1.0–2.8 nm)and nanoparticles(NPs,20–30 nm),with the aim of studying the size effect for the NO_(3)^(-)-to-NH_(3) reduction ***,the Cu SCCs exhibit enhanced metal–substrate and metal–metal interactions by taking advantageous features of Cu SACs and Cu ***,Cu SCCs achieve exceptional electrocatalytic performance for the NitRR with a maximum Faradaic efficiency of ca.96%NH_(3)and the largest yield rate of ca.1.99 mg·h^(-1)·cm^(-2) at-0.5 V *** hydrogen electrode(RHE).The theoretical calculation further reveals the size effect and coordination environment on the high catalytic activity and selectivity for the *** work provides a promising various size-controlled design strategy for aerogel-based catalysts effectively applied in various electrocatalytic reactions.

关键词： nitrate electroreduction ammonia electrosynthesis size effect single-cluster catalyst

来源：评论

学校读者我要写书评

暂无评论

Advancing optothermal manipulation:decoupling temperature and flow fields in quasi-isothermal microscale streaming

引用

Light(science & Applications) 2023年第9期12卷 1713-1714页

作者： Youngsun Kim Yuebing Zheng Materials Science and Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX78712USA Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX78712USA

By decoupling temperature and flow fields through symmetry-correlated laser scan sequences,ISO-FLUCS enables quasi-isothermal optofluidic microscale *** technique offers precise control over fluid manipulation while m... 详细信息

关键词： thermal isothermal flow

来源：评论

学校读者我要写书评

暂无评论

Twin-solute, twin-dislocation and twin-twin interactions in magnesium

引用

Journal of Magnesium and Alloys 2023年第10期11卷 3427-3462页

作者： Yuan Yue Jian Wang Jian-Feng Nie Department of Materials Science and Engineering Monash UniversityVictoria 3800Australia Department of Mechanical&Materials Engineering University of Nebraska-LincolnLincolnNE 68583USA

Magnesium alloys have received considerable research interest due to their lightweight,high specific strength and excellent ***,their plastic deformation is more complicated compared to cubic materials,primarily because their low-symmetry hexagonal closepacked(hcp) crystal *** twinning is a crucial plastic deformation mechanism in magnesium,and twins can affect the evolution of microstructure by interacting with other lattice defects,thereby affecting the mechanical *** paper provides a review of the interactions between deformation twins and lattice defects,such as solute atoms,dislocations and twins,in magnesium and its *** review starts with interactions between twin boundaries and substitutional solutes like yttrium,zinc,silver,as well as interstitial solutes like hydrogen and *** is followed by twin-dislocation interactions,which mainly involve those between {10■2} tension or {10■1} compression twins and , or type *** following section examines twin-twin interactions,which occur either among the six variants of the same {10■2} or {10■1} twin,or between different types of *** resulting structures,including twin-twin junctions or boundaries,tension-tension double twin,and compression-tension double twin,are discussed in ***,this review highlights the remaining research issues concerning the interactions between twins and lattice defects in magnesium,and provides suggestions for future work in this area.

关键词： Magnesium alloys Twin-solute interactions Twin-dislocation interactions Twin-twin interactions Microstructure mechanical properties

来源：评论

学校读者我要写书评

暂无评论

Quantification of grain boundary effects on the geometrically necessary dislocation density evolution and strain hardening of polycrystalline Mg-4Al using in situ tensile testing in scanning electron microscope and HR-EBSD

引用

Journal of Magnesium and Alloys 2024年第5期12卷 1815-1829页

作者： Eunji Song Mohsen Taheri Andani Amit Misra Department of Materials Science and Engineering University of MichiganAnn ArborMI 48109USA Department of Mechanical Engineering University of MichiganAnn ArborMI 48109USA Department of Mechanical Engineering Texas A&M UniversityCollege StationTX 77843USA

In situ tensile testing in a scanning electron microscope(SEM)in conjunction with high-resolution electron backscatter diffraction(HR-EBSD)under load was used to characterize the evolution of geometrically necessary dislocation(GND)densities at individual grain boundaries as a function of applied strain in a polycrystalline Mg-4Al *** increase in GND density was investigated at plastic strains of 0%,0.6%,2.2%,3.3% from the area including 76 grains and correlated with(i)geometric compatibility between slip systems across grain boundaries,and(ii)plastic *** develop expressions for the grain boundary GND density evolution as a function of plastic strain and plastic incompatibility,from which uniaxial tensile stress-strain response of polycrystalline Mg-4Al are computed and compared with experimental *** findings in this study contribute to understanding the mechanisms governing the strain hardening response of single-phase polycrystalline alloys and more reliable prediction of mechanical behaviors in diverse microstructures.

关键词： Mg-Al alloys Grain boundaries Geometrically necessary dislocations Strain gradient plasticity HR-EBSD

来源：评论

学校读者我要写书评

暂无评论

Martensitic transformation induced strength-ductility synergy in additively manufactured maraging 250 steel by thermal history engineering

引用

材料科学技术（英文版） 2025年第8期211卷 212-225页

作者： Shahryar Mooraj Shuai Feng Matthew Luebbe Matthew Register Jian Liu Tianyi Li Baris Yavas David P.Schmidt Matthew W.Priddy Michael B.Nicholas Victor K.Champagne Mark Aindow Haiming Wen Wen Chen Department of Mechanical and Industrial Engineering University of Massachusetts AmherstAmherstMA 01003USA Department of Materials Science and Engineering Missouri University of Science and TechnologyRollaMO 65409USA Department of Mechanical Engineering Mississippi State UniversityMS 39759USA X-Ray Science Division Argonne National LaboratoryArgonneIL 60439USA Department of Materials Science and Engineering & Institute of Materials Science University of Connecticut25 King Hill RoadStorrsCT 06269USA DEVCOM-Army Research Laboratory Aberdeen Proving GroundMD 21005USA

Maraging steels are known for their exceptional strength but suffer from limited work hardening and ***,we report an intermittent printing strategy to tailor the microstructure and mechanical properties of maraging 250 steel via tuning the thermal history during wire-arc directed energy *** introducing a dwell time between adjacent layers,the maraging 250 steel is cooled below the martensite start temperature,triggering thermally-driven martensitic transformation during the printing *** cycling during subsequent layer deposition results in the formation of reverted austen-ite which shows a refined microstructure and induces elemental segregation between martensite and reverted *** Ni enrichment in the austenite promotes stabilization of the reverted austen-ite upon cooling to room *** reverted austenite is metastable during deformation,leading to strain-induced martensitic transformation under ***,a 3 min interlayer dwell time produces a maraging 250 steel with approximately 8％reverted austenite,resulting in improved work hardening via martensitic transformation induced plasticity during ***,the higher cooling rate and refined prior austenite grains lead to substantially refined martensitic grains(by approx-imately fivefold)together with an increased dislocation *** 3 min interlayer dwell time,the yield strength of the printed maraging 250 steel increases from 836 MPa to 990 MPa,and the uniform elongation is doubled from 3.2％to 6.5％.This intermittent deposition strategy demonstrates the potential to tune the microstructure of maraging steels for achieving strength-ductility synergy by engineering the thermal history during additive manufacturing.

关键词： Additive manufacturing Maraging steel mechanical properties Martensitic transformation Thermal history

来源：评论

学校读者我要写书评

暂无评论

Multi-response Optimization of Process Parameters in Stretch Blow Molding of PET Plastic Bottles

引用

Journal of The Institution of Engineers (India): Series D 2024年 1-15页

作者： Merga, Henok Hailu Sinha, Devendra Kumar Getachew, Aklilu Workneh, Melese Rathee, Devender Singh Department of Mechanical Engineering School of Mechanical Chemical and Materials Engineering Center of Excellence Advanced Manufacturing Engineering Adama Science and Technology University Adama Ethiopia Department of Electronics Engineering School of Electrical Engineering and Computing Adama Science and Technology University Adama Ethiopia

Plastic waste in Polyethylene Terephthalate (PET) bottles is creating new challenges, which in today’s scenario is a major concern in every industry. The defect in PET bottles mainly occurs due to improper selection of levels of process parameters during the production process. Therefore, optimizations of process parameters are very important to minimize the defects produced due to improper stretch blow molding process parameter selections. The study is carried out on 2 L bottle since they have the highest demand and the highest defect rate in the PET bottling sector. The PET bottles have been developed from the preform at various blowing temperature, blowing speed and blowing angle on commercially available SBM setup. The design and plan of experiments have been done according to L9 orthogonal array of Taguchi method. The optimization of process parameters has been done through the hybrid Taguchi grey relational analysis optimization technique on four factors namely: blowing temperature, first blow angle, second blow angle and blowing speed. Each value of parameter was taken at three levels in combination. The testing of all samples such as tensile test, wall thickness measurement and hoop stretch ratio measurement have been carried out as per ASTM standards. The morphology of the samples has been carried out through scanning electron microscope. A maximum tensile strength of 65 MPa, minimum hoop stretch ratio of 5.45 and a maximum wall thickness 0.24 mm was found at varying process parameter combinations. It has been observed that among the process parameters: blowing temperature was the most significant factor for minimizing defects while second blow angle was the least significant parameter. It was found that optimized values of the process parameters yielded 15% reduction in defects on PET bottles. The present study is expected to contribute significantly for the industries working in this field for carrying out production at optimum levels of process parameter

关键词： Plastic bottles

来源：评论

学校读者我要写书评

暂无评论

Advanced high-entropy alloys breaking the property limits of current materials

引用

Journal of materials science & Technology 2024年第19期186卷 219-230页

作者： Dongyue Li Peter K.Liaw Lu Xie Yong Zhang Wenrui Wang School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996USA Beijing Advanced Innovation Center of Materials Genome Engineering State Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China

The growing need for stronger and more ductile structural materials has spurred an intense search for innovative,high-performance ***,alloys face a pervasive trade-off:high strength often comes at the expense of ductility and vice *** advent of high-entropy alloys(HEAs)offering both high strength and ductility has transformed this *** this work,we discuss the deformation mechanisms of HEAs,examine the foundations of the strength-ductility trade-off,and explore approaches for designing HEAs to surmount this ***,we analyze the factors that govern HEA-deformation performance,which in turn influence the HEA *** also propose a perspective on future research directions concerning the mechanical behavior of HEAs,highlighting potential breakthroughs and novel strategies to advance the field.

关键词： High-entropy alloy Strength-ductility Trade-off Microstructure Deformation mechanism

来源：评论

学校读者我要写书评

暂无评论

Thermodynamic analysis of metal segregation in dual phase high entropy ceramics

引用

Journal of Materiomics 2024年第4期10卷 889-895页

作者： Steven M.Smith II William G.Fahrenholtz Gregory E.Hilmas Stefano Curtarolo Missouri University of Science and Technology Materials Science and Engineering DepartmentRollaMO65409USA Duke University Department of Mechanical Engineering and Materials ScienceDurhamNC27708USA Duke University Center of Autonomous Materials DesignDurhamNC27708USA

Equilibrium Gibbs'free energy calculations were used to determine metal segregation trends between boride and carbide solid solutions containing two metals that are relevant to dual phase high entropy *** model predicted that Ti had the strongest tendency to segregate to the boride phase followed by Zr,Nb,Mo,V,Hf,and Ta,which matches experimental results of measured *** ratio of a metal in the carbide phase to the content of the same metal in the corresponding metal boride had a linear trend with the change in standard Gibbs'free energy of reaction for a metal carbide reacting with B_(4)C to produce its corresponding metal boride and *** proposed model was used to predict the changes in standard Gibbs'free energy for CrC→CrB_(2) to be−260 kJ and WC→WB_(2) to be 148 kJ,which indicates that Cr has the strongest segregation to the boride and W has the strongest segregation to the *** proposed model can be used to estimate the segregation of metals in dual phase high entropy boride-carbide ceramics of any boride/carbide ratio or metal content.

关键词： Dual phase High entropy ceramic Boride Carbide Thermodynamics

来源：评论

学校读者我要写书评

暂无评论

Grey-box modelling for estimation of optimum cut point temperature of crude distillation column

引用

CAAI Transactions on Intelligence Technology 2025年第1期10卷 160-174页

作者： Junaid Shahzad Iftikhar Ahmad Muhammad Ahsan Farooq Ahmad Husnain Saghir Manabu Kano Hakan Caliskan Hiki Hong School of Chemical and Materials Engineering National University of Sciences and TechnologyIslamabadPakistan Department of Chemical and Materials Engineering College of EngineeringNorthern Border UniversityArarSaudi Arabia Department of Systems Science Kyoto UniversityKyotoJapan Department of Mechanical Engineering Faculty of Engineering and Natural SciencesUsak UniversityUsakTürkiye Department of Mechanical Engineering Kyung Hee UniversityYonginRepublic of Korea

A grey-box modelling framework was developed for the estimation of cut point temperature of a crude distillation unit(CDU)under uncertainty in crude composition and process *** principle(FP)model of CDU was developed for Pakistani crudes from Zamzama and Kunnar fields.A hybrid methodology based on the integration of Taguchi method and genetic algorithm(GA)was employed to estimate the optimal cut point temperature for various sets of process *** datasets were utilised to develop an artificial neural networks(ANN)model for the prediction of optimum values of cut *** ANN model was then used to replace the hybrid framework of the Taguchi method and the *** integration of the ANN and FP model makes it a grey-box(GB)*** the case of Zamama crude,the GB model helped in the decrease of up to 38.93%in energy required per kilo barrel of diesel and an 8.2%increase in diesel production compared to the stand-alone FP model under ***,for Kunnar crude,up to 18.87%decrease in energy required per kilo barrel of diesel and a 33.96%increase in diesel production was observed in comparison to the stand-alone FP model.

关键词： artificial neural networks crude distillation unit cut point temperature optimization exergy analysis gray box model industry 4.0

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：