MatSciRN: Other Materials Processing & Manufacturing (Topic)最新文献_第9页

Coupling of Homogeneous and Heterogeneous Melting Kinetics in Polycrystallines 多晶中均相和非均相熔炼动力学的耦合

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-16 DOI: 10.2139/ssrn.3399164

M. Xiang, Yi Liao, Guomeng Li, Jun Chen

引用次数: 1

Modeling and Analysis of Radionuclide’s Transport and Source Term Evaluation Within Containment and Release to the Environment for Research Reactors 研究堆安全壳内放射性核素输运的建模与分析及源项评估

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-14 DOI: 10.2139/ssrn.3371813

H. Graine, Kamel Zenikhri

{"title":"Modeling and Analysis of Radionuclide’s Transport and Source Term Evaluation Within Containment and Release to the Environment for Research Reactors","authors":"H. Graine, Kamel Zenikhri","doi":"10.2139/ssrn.3371813","DOIUrl":"https://doi.org/10.2139/ssrn.3371813","url":null,"abstract":"The subject of this work is to carry out a source term assessment for a Hypothetical Research Reactor (HRR) and the calculation of the radiological consequences in case of Loss Of Coolant Accident (LOCA), setting out the assumptions made and the bases for these assumptions. In the Safety Analysis Report, the maximum hypothetical accident was analyzed following these steps: -Estimation of fission product inventory in the core -Estimation fission product release to the building -Building release evaluation -Downwind doses calculation: evaluation of dose consequences from a release; In the event of an accident in a nuclear reactor, the authorities should be in position to implement the counter-measures necessary to protect the surrounding population from radiological and the environment consequences of any releases. It is therefore necessary to monitor the progression of the accident as soon as it is detected by the plant operator in order to forecast the future behavior of the reactor so as to be able to recommend to the government authorities the implementation of counter-measures within a time compatible with the control of the risk to the population. For that purpose, it is necessary to estimate the nature, amount and kinetics of the radioactive products likely to be released out of the installation. Then, it would be possible to use PC-COSYMA codes to decide the adapted counter-measures.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86399855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical Analysis of Alloying Element Effects on Gas Nitriding Rate of Fe Alloys: A DFT, Microkinetic and kMC Study 合金元素对Fe合金气体氮化速率影响的层次分析:DFT、微动力学和kMC研究

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-11 DOI: 10.2139/ssrn.3370281

K. Kang, Soonho Kwon, Changsoo Lee, Doosun Hong, Hyuck-Mo Lee

{"title":"Hierarchical Analysis of Alloying Element Effects on Gas Nitriding Rate of Fe Alloys: A DFT, Microkinetic and kMC Study","authors":"K. Kang, Soonho Kwon, Changsoo Lee, Doosun Hong, Hyuck-Mo Lee","doi":"10.2139/ssrn.3370281","DOIUrl":"https://doi.org/10.2139/ssrn.3370281","url":null,"abstract":"Abstract Nitriding is the most widely employed thermochemical surface treatment to enhance the mechanical properties of steel. Specifically, gas nitriding, which is a low-temperature process for efficiently producing high-performance steels, has a disadvantage in that it consumes a large amount of time. To enhance the nitriding rate, we studied the surface alloying of iron (Fe) and its effect on ammonia (NH3) nitriding of Fe using a hierarchical protocol with density functional theory (DFT)-based microkinetics and real-time simulations. First, we considered the NH3 decomposition and nitrogen (N) diffusion mechanism on clean and alloyed (Fe-X) Fe (100) surfaces using DFT. In this study, the alloying elements including transition metals and period III to VI elements in the periodic table were considered for DFT-based computational screening. For the candidate Fe-X systems selected to improve the nitriding rate in the previous step, we calculated all the energy barriers for every elementary reaction step by varying the alloying elements and performed microkinetic analysis using those kinetic energy barriers to determine their influence on the nitriding rate. After adding consideration of thermodynamic factors, selected candidate alloys were subjected to detailed DFT calculations of the nitriding mechanism with N coverage, and based on these results, a kinetic Monte Carlo (kMC) simulation was performed to reconfirm the results under the actual nitriding process conditions. Through a hierarchical protocol, we performed a theoretical analysis and simulation of the effects of alloying elements on the nitriding rate that were not explained experimentally and suggested the best alloying element with the improved nitriding rate.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77163128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Implementation of FIR Filters Using DSP FIR滤波器的DSP实现

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-08 DOI: 10.2139/ssrn.3367670

Akash Mumbaikar, Rohan Mudgalkar, Tushar Nachan, T. Agarkar

引用次数: 0

Dual Polarized Multiband Stub and Slot Loaded Semicircular Microstrip Antenna 双极化多波段短段和槽加载半圆微带天线

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-08 DOI: 10.2139/ssrn.3368184

A. Ambekar, Amit A. Deshmukh, Venkata A. P. Chavali, K. Ray

引用次数: 0

Cognitive challenges in human-AI collaboration: Investigating the path towards productive delegation 人类与人工智能协作中的认知挑战:探索通往高效授权的道路

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-08 DOI: 10.2139/ssrn.3368813

A. Fügener, Jörn Grahl, Alok Gupta, W. Ketter

{"title":"Cognitive challenges in human-AI collaboration: Investigating the path towards productive delegation","authors":"A. Fügener, Jörn Grahl, Alok Gupta, W. Ketter","doi":"10.2139/ssrn.3368813","DOIUrl":"https://doi.org/10.2139/ssrn.3368813","url":null,"abstract":"We study how humans make decisions when they collaborate with an artificial intelligence (AI): each instance of a classification task could be classified by themselves or by the AI. Experimental results suggest that humans and AI who work together can outperform the superior AI when it works alone. However, this only occurred when the AI delegated work to humans, not when humans delegated work to the AI. The AI profited, even from working with low-performing subjects, but humans did not delegate well. This bad delegation performance cannot be explained with algorithm aversion. On the contrary, subjects tried to follow a provided delegation strategy diligently and appeared to appreciate the AI support. However, human results suffered due to a lack of metaknowledge. They were not able to assess their own capabilities correctly, which in turn leads to poor delegation decisions. In contrast to reluctance to use AI, lacking metaknowledge is an unconscious trait. It limits fundamentally how well human decision makers can collaborate with AI and other algorithms when there is no explicit performance feedback. The results have implications for the future of work, the design of human-AI collaborative environments and education in the digital age.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82124295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Numerical Simulations Applied to Energy Efficiency for Buildings with Lattice Boltzmann Method 栅格玻尔兹曼方法在建筑节能数值模拟中的应用

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-07 DOI: 10.2139/ssrn.3377238

L. Nasseri, Z. Hireche, A. Cherif, D. Ameziani

引用次数: 0

Exergy Analysis of a Thermal Power Plant 某火电厂的火用分析

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-05 DOI: 10.2139/ssrn.3366867

Gajendra Kumar Gaurav, Nitu Singh, B. Francis

引用次数: 0

Aerocon Blocks and Panels: Sustainable and Cost Effective Material for Speedy Construction Aerocon块和面板:可持续和成本有效的材料快速建设

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-05 DOI: 10.2139/ssrn.3366741

Akshay Wayal, M. Kumthekar

{"title":"Aerocon Blocks and Panels: Sustainable and Cost Effective Material for Speedy Construction","authors":"Akshay Wayal, M. Kumthekar","doi":"10.2139/ssrn.3366741","DOIUrl":"https://doi.org/10.2139/ssrn.3366741","url":null,"abstract":"The study mainly emphasis on implementation of Aerocon blocks and panels in today’s current scenario for cost effective speedy construction. Cost Effective Speedy Construction should be possible by utilization of appropriate planning and project management, low cost materials, economical construction innovations and alternate construction techniques and strategies accessible. The selection of building materials should address the issues of nearby conditions to enhance estimation of life for the wanted ones by building innovative structures or by refining existing structures. Many studies demonstrated that a different material has been utilized in various building frameworks with conventional and current modern strategies, however just few of them have effectively been executed in Low Cost Construction projects. The present time of land has aged, and the clay bricks and mortar are replaced with alternative development materials like Aerocon blocks and Panels. Countless properties in India are built with Aerocon blocks and the strategy is quickly thriving. The primary goal of this paper is to give itemized ponder on Cost Effective Speedy Construction utilizing AEROCON blocks and panels in construction industry.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"93 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89469480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Formation, Stability and Ultrahigh Strength of Novel Nanostructured Alloys by Partial Crystallization of High-Entropy (Fe 0.25Co 0.25Ni 0.25Cr 0.125Mo 0.125) 86‒89B 11‒14 Amorphous Phase 高熵(Fe 0.25Co 0.25Ni 0.25Cr 0.125 mo 0.125) 86 - 89b11 - 14非晶相部分结晶制备新型纳米结构合金的形成、稳定性和超高强度

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-04-03 DOI: 10.2139/ssrn.3365117

F. Wang, A. Inoue, F. Kong, S. L. Zhu, E. Shalaan, F. Al-Marzouki, W. Botta, C. S. Kiminami, Y. Ivanov, A. Greer

{"title":"Formation, Stability and Ultrahigh Strength of Novel Nanostructured Alloys by Partial Crystallization of High-Entropy (Fe 0.25Co 0.25Ni 0.25Cr 0.125Mo 0.125) 86‒89B 11‒14 Amorphous Phase","authors":"F. Wang, A. Inoue, F. Kong, S. L. Zhu, E. Shalaan, F. Al-Marzouki, W. Botta, C. S. Kiminami, Y. Ivanov, A. Greer","doi":"10.2139/ssrn.3365117","DOIUrl":"https://doi.org/10.2139/ssrn.3365117","url":null,"abstract":"Heating-induced crystallization of high-entropy (HE) (Fe0.25Co0.25Ni0.25Cr0.125Mo0.125)86‒89B11-14 amorphous (am) alloys is examined to develop new structural materials with low B contents. The crystallization of 11B alloy occurs in three stages: first nanoscale bcc precipitates form in the amorphous matrix, second nanoscale fcc precipitates form, and the residual amorphous phase disappears in the third stage which yields borides in addition to the bcc and fcc phases. Crystallization of 14B alloy is the same, except that the order of appearance of bcc and fcc is reversed. The bcc and fcc particle diameters are 5-15 nm and remain almost unchanged up to ~960 K. On annealing, ultrahigh hardness of 1500-1550 (unprecedented for boride-free structures) is attained just before the third crystallization stage. This hardening and the thermal stability of the novel [am + bcc + fcc] structures are remarkable at such low boron content, and encouraging for development as ultrahigh-strength alloys. The results are interpreted in terms of the nature and extent of partitioning of elemental components between the bcc/fcc phases and the amorphous matrix, and the size and defect structures of the bcc and fcc precipitates. The magnetic flux density at RT increases by precipitation of bcc and decreases by appearance of fcc. Slower quenching of the 11B alloy shows a pseudo-polymorphic crystallization that may be characteristic of multicomponent HE systems.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83396553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3