MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference最新文献_第6页

Theorethical Study of Poly (P-Phenylenevinylene ) Derivates 聚对苯乙烯衍生物的理论研究

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.015

I. Nikolényi, J. Tóth

引用次数: 0

Logistics 4.0 - Basics, Ideas and Useful Methods 物流4.0 -基础，思想和有用的方法

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.022

Elke Glistau, Norge Isaías Coello Machado

引用次数: 0

Phenomenological Modeling of Gas Explosion in Closed Vessel 密闭容器内气体爆炸的现象学模拟

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.047

Viktória Mikáczó, G. Szepesi

引用次数: 0

The Effect of Optimization on the Design of Steel Structures 优化对钢结构设计的影响

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.043

K. Jármai, S. Kmeť

引用次数: 0

Mechanisms of Stress Corrosion Cracking 应力腐蚀开裂机理

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.052

Bernadett Spisák, S. Szávai

{"title":"Mechanisms of Stress Corrosion Cracking","authors":"Bernadett Spisák, S. Szávai","doi":"10.26649/musci.2019.052","DOIUrl":"https://doi.org/10.26649/musci.2019.052","url":null,"abstract":"Stress corrosion cracking (SCC) even nowadays is the cause of significant service failures, it can occur in almost any type of components of the chemical industry such as steam generator tubes, pressurizer instrument penetrations and heater sleeves, control rod drive mechanism (CRDM) nozzles, heat exchangers [1]-[6]. One of the most recent major accident happened in 2009, where a 50-foot-tall highpressure vessel ruptured, resulting in one fatality and one injury of the public. Based on the review of the National Institute of Standards and Technology the failure was caused by the combination of stress corrosion cracking and a reduction in material toughness during service [6]. In case of existing nuclear power plants the stress corrosion cracking counts as one of the important ageing degradations. For stress corrosion to occur three indispensable factors have to be present, which are the tensile stress, the environment and the susceptible material. If changes are made in any of these factors then the susceptibility to SCC often can be eliminated or reduced. The tensile stress can originate from residual stresses, operational loadings, the structural and metallurgical factors includes the degree of grain size, thermal treatment, cold work, and finally the environment factors are resulted from the water chemistry, the operating temperature [1]. However this type of failure is sudden and difficult to predict and also material properties may change with time or due to material processing. Therefore the right way of prediction and modelling of SCC is still a vital research area. In this article the different type of SCC mechanisms are presented, the ones used in the nuclear industry in more details.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125694192","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: 18

Survey of Signature Verification Databases 签名验证数据库综述

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.027

Mohammad Saleem, B. Kővári

引用次数: 4

Investigation of Electron Beam Welding of AHSS by Physical and Numerical Simulation AHSS电子束焊接的物理与数值模拟研究

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.051

R. Sisodia, M. Marcell

{"title":"Investigation of Electron Beam Welding of AHSS by Physical and Numerical Simulation","authors":"R. Sisodia, M. Marcell","doi":"10.26649/musci.2019.051","DOIUrl":"https://doi.org/10.26649/musci.2019.051","url":null,"abstract":"The electron beam welding (EBW) sets new standards as it facilitates very high quality and effective welding of high strength structural steels. The technology ensures high-quality critical welded joints in thicker structural metals. It has a high energy density in comparison to the conventional arc welding processes (e.g. GMAW). As a result of less overall energy input and higher velocity, the effect of welding on the base material in the heat-affected zone (HAZ) and the distortion is much smaller compared to conventional arc welding processes. The low heat input result in a small HAZ and a reduced extension of critical HAZ areas which can be favourable in high strength steels when the mechanical properties can drastically decrease in the HAZ. In comparison with experimental studies, a numerical modelling study can provide detailed information concerning the welding process and parameters, and the number of costly experiments can be reduced. Finite element modelling (FEM) of EBW enables the estimation of temperature field, time temperature curve, weld pool geometry and welding distortion etc. The determination of the temperature field can be very useful in terms of the further investigations since the t8/5 cooling time can be less than 2 s during EBW. In this paper, by the application of Sysweld software, the time-temperature curve was determined and the physical simulation of the critical HAZ subzones were performed using a GLEEBLE 3500 physical simulator in order to analyse the properties of HAZ during extremely short cooling time.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116446730","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

The Fundamental Kinetic Characteristics of Aqueous Dissolution of Chloride and Fluoride Salts from Secondary Aluminium Dross 二次铝渣中氯化物和氟化物溶解的基本动力学特征

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.083

I. Illés, M. Sassi, H. Zakiyya, T. Kékesi

{"title":"The Fundamental Kinetic Characteristics of Aqueous Dissolution of Chloride and Fluoride Salts from Secondary Aluminium Dross","authors":"I. Illés, M. Sassi, H. Zakiyya, T. Kékesi","doi":"10.26649/musci.2019.083","DOIUrl":"https://doi.org/10.26649/musci.2019.083","url":null,"abstract":"The salt content in the secondary dross obtained beside the recovered aluminium by the hot processing of the primary melting dross hinders further utilization of this material. Secondary dross samples obtained from the industrial hot processing of the primary dross generated by the melting of aluminium alloy scrap were leached with water at room temperature with different Liquid/Solid (L:S) ratios. Vessel filling (the relative volume occupied by the sludge) in the shaking bottles required further consideration in the interpretation of the results. Samples taken regularly within 15 minutes during vigorous shaking showed that NaCl and KCl can be dissolved almost instantly, and completely irrespective of the parameter settings. However, the fluoride additive (CaF2) has a complex behaviour. The results suggest its relation to some side reactions indicating also the conditions of the hot process producing the examined material. The results suggest that the salt content of the secondary aluminium dross can be lixiviated within a 2 – 4 minutes virtually completely, but the L:S ratio and the a vessel filling have to be coordinated. At the lowest L:S ratio examined of 1.0, a vessel filling of max. 11% should be observed to achieve this fast salt dissolution. The same dissolution rate can be reached with double the vessel filling (i.e. smaller unit) if the L:S is also increased in this ratio.","PeriodicalId":340250,"journal":{"name":"MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856167","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

Geopolymer Composites 地质聚合物复合材料

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.011

Nóra Papné Halyag, G. Mucsi

引用次数: 4

Porter's Five Forces Analysis of the District Heat Sector 区域供热部门的波特五力分析

MultiScience - XXXIII. microCAD International Multidisciplinary Scientific Conference Pub Date : 1900-01-01 DOI: 10.26649/musci.2019.070

G. Süveges

引用次数: 0