Materials Processing & Manufacturing eJournal最新文献_第8页

Optimization Of Cementitious Material Content For Sustainable Concrete Mixtures Through Value Engineering Approach 应用价值工程方法优化可持续混凝土配合比胶凝材料掺量

Materials Processing & Manufacturing eJournal Pub Date : 2019-04-21 DOI: 10.2139/ssrn.3375588

A. Baghdady, Walid Sayed Abdulgalil, Ahmad Asran, I. Nosier

{"title":"Optimization Of Cementitious Material Content For Sustainable Concrete Mixtures Through Value Engineering Approach","authors":"A. Baghdady, Walid Sayed Abdulgalil, Ahmad Asran, I. Nosier","doi":"10.2139/ssrn.3375588","DOIUrl":"https://doi.org/10.2139/ssrn.3375588","url":null,"abstract":"This paper studies the effectiveness of applying value engineering to actual concrete mixtures. The study was conducted in the State of Qatar on a number of strategic construction projects with international engineering specifications for the 2022 World Cup projects. The study examined the concrete mixtures of Doha Metro project and the development of KAHRAMAA’s (Qatar Electricity and Water Company) Abu Funtas Strategic Desalination Plant, in order to generally improve the quality and productivity of ready-mixed concrete used in construction and hydraulic projects. The application of value engineering to such concrete mixtures resulted in the following: • Improving the quality of concrete mixtures and increasing the durability of buildings in which they are used; • Reducing the waste of excess materials of concrete mixture, optimizing the use of resources, and enhancing sustainability; • Reducing the use of cement, thus reducing CO2 emissions which ensures the protection of environment and public health; • Reducing actual costs of concrete mixtures and, in turn, reducing the costs of construction projects; and • Increasing the market share and competitiveness of concrete producers. This research shows that applying the methodology of value engineering to ready-mixed concrete is an effective way to save around 5% of the total cost of concrete mixtures supplied to construction and hydraulic projects, improve the quality according to the technical requirements and as per the standards and specifications for ready-mixed concrete, improve the environmental impact, and promote sustainability.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82095275","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

Noise Pollution, Awareness, Prevention and Control 噪音污染，认识，预防和控制

Materials Processing & Manufacturing eJournal Pub Date : 2019-04-19 DOI: 10.2139/ssrn.3374908

D. Gandhi, Atul M. Raghatate, S. Pande

引用次数: 1

Numerical Investigation of Flow Control by Passive Blowing 被动吹气流动控制的数值研究

Materials Processing & Manufacturing eJournal Pub Date : 2019-04-03 DOI: 10.2139/ssrn.3376788

Zakarya Laffane, Y. Boualia, Fethi Saidi, Fatima Zohra Kihel, B. Hamoudi

引用次数: 0

Assessing Printability Maps in Additive Manufacturing of Metal Alloys 金属合金增材制造中可印刷性图的评估

Materials Processing & Manufacturing eJournal Pub Date : 2019-03-23 DOI: 10.2139/ssrn.3358841

L. Johnson, M. Mahmoudi, Bing Zhang, R. Seede, Xueqin Huang, J. T. Maier, H. Maier, I. Karaman, A. Elwany, R. Arróyave

{"title":"Assessing Printability Maps in Additive Manufacturing of Metal Alloys","authors":"L. Johnson, M. Mahmoudi, Bing Zhang, R. Seede, Xueqin Huang, J. T. Maier, H. Maier, I. Karaman, A. Elwany, R. Arróyave","doi":"10.2139/ssrn.3358841","DOIUrl":"https://doi.org/10.2139/ssrn.3358841","url":null,"abstract":"Abstract We propose a methodology for predicting the printability of an alloy, subject to laser powder bed fusion additive manufacturing. Regions in the process space associated with keyhole formation, balling, and lack of fusion are assumed to be strong functions of the geometry of the melt pool, which in turn is calculated for various combinations of laser power and scan speed via a Finite Element thermal model that incorporates a novel vaporization-based transition from surface to volumetric heating upon keyhole formation. Process maps established from the Finite Element simulations agree with experiments for a Ni-5wt.%Nb alloy and an equiatomic CoCrFeMnNi High Entropy Alloy and suggest a strong effect of chemistry on alloy printability. The printability maps resulting from the use of the simpler Eagar-Tsai model, on the other hand, are found to be in disagreement with experiments due to the oversimplification of this approach. Uncertainties in the printability maps were quantified via Monte Carlo sampling of a multivariate Gaussian Processes surrogate model trained on simulation outputs. The printability maps generated with the proposed method can be used in the selection—and potentially the design—of alloys best suited for Additive Manufacturing.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77393653","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: 136

Determination of Mechanical Properties of Mortar by Using Fine Crushed Glass (FCG) and Waste Rubber (WR) 用细碎玻璃(FCG)和废橡胶(WR)测定砂浆力学性能

Materials Processing & Manufacturing eJournal Pub Date : 2019-03-16 DOI: 10.2139/ssrn.3353639

H. Jain, Vijay Kumar Baradiya

{"title":"Determination of Mechanical Properties of Mortar by Using Fine Crushed Glass (FCG) and Waste Rubber (WR)","authors":"H. Jain, Vijay Kumar Baradiya","doi":"10.2139/ssrn.3353639","DOIUrl":"https://doi.org/10.2139/ssrn.3353639","url":null,"abstract":"Concrete contain more amount of cement which will release more CO2 and effects the environment, therefore to reduce the amount of cement in a concrete one should have approach towards replacement of cement with other waste and cost effective material such as glass. Since waste glass is not biodegradable and therefore alternative usage of it is required. Such can be used as coarse aggregate and substitute of cement constituents in concrete and mortar. Also disposal of waste glass into landfills is one of the major issues that have been come across. This study aims on reducing such problems by the usage of waste glass as one of the replacing material in cement mortar. The pozzolanic activity of glass powder and properties of glass powder blended cement were evaluated. Also the mechanical and chemical properties of such blended mortar has been evaluated. The cement is replaced 0%, 5%, 10%, 15% and 20% by glass powder content by weight of cement. The test results shows that on adding the optimum amount of waste glass the compressive strength of mortar has been increased. Also at 5% replacement of cement with waste glass powder gives the best proportion to increase compressive strength and reduce the cost of conventional mortar.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79460071","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

Empirical Thresholding and Feature Extraction Based Back Propagation - Artificial Neural Network Model for Fruit Grade 基于经验阈值和特征提取的反向传播-水果等级人工神经网络模型

Materials Processing & Manufacturing eJournal Pub Date : 2019-03-15 DOI: 10.2139/ssrn.3386114

P. Tripathi, R. Belwal, A. Bhatt

{"title":"Empirical Thresholding and Feature Extraction Based Back Propagation - Artificial Neural Network Model for Fruit Grade","authors":"P. Tripathi, R. Belwal, A. Bhatt","doi":"10.2139/ssrn.3386114","DOIUrl":"https://doi.org/10.2139/ssrn.3386114","url":null,"abstract":"This paper explains a new feature extraction image pre-processing system followed by back propagation- artificial neural networks based system for class categorization of apple fruit images. Scale Conjugate Gradient (SCG) algorithm is used for back propagation. The methodology comprises of three stages in this work. Firstly, various external image based attributes of apple were taken and process in MATLAB. Size and weight features were also considered as important parameters as only color is not sufficient to judge the quality. Secondly, features extraction was done at image pre-processing for making the algorithm lighter by focusing only key features. Support vector machine (SVM) algorithm is also popular for development of relatively light weight classification models. This work uses artificial neural network toolbox in MATLAB for classification. A single hidden layer BP-ANN (Back propagation- artificial neural network) was used with sigmoid activation functions. The result came in terms of suitable output variable which is the quality class of the apple which is chosen A, B, C and D respectively. The modeling result indicates the tremendous match between the data used in training and assumed output values. It also has shorter calculation time due to the SCG algorithm. It is also possible for apple producers and distributors to classify their fruit using this model and reduce the cost by avoiding manual classification.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75497633","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

HOSVD Based Image Encryption Using DSCT and Shearlet Transform 基于DSCT和Shearlet变换的HOSVD图像加密

Materials Processing & Manufacturing eJournal Pub Date : 2019-03-15 DOI: 10.2139/ssrn.3403407

Sumita Lamba, M. Diwakar, Dev Baloni, Alok Nautiyal, Ravi Dhaundiyal

引用次数: 0

An Analysis on Security Threats of Black-Hole and Jellyfish Attacks in Mobile Ad-Hoc Network Using HTTP Traffic 基于HTTP流量的移动Ad-Hoc网络黑洞和水母攻击安全威胁分析

Materials Processing & Manufacturing eJournal Pub Date : 2019-03-15 DOI: 10.21276/IJRE.2019.6.2.1

Dewan Juel Rahman, Faisal Ahmed, Sayma Rashid

引用次数: 0

Autonomic Provisioning in Software Development Life Cycle Process 软件开发生命周期过程中的自主供应

Materials Processing & Manufacturing eJournal Pub Date : 2019-02-25 DOI: 10.2139/ssrn.3349295

Pooja Dehraj, Arun Sharma

{"title":"Autonomic Provisioning in Software Development Life Cycle Process","authors":"Pooja Dehraj, Arun Sharma","doi":"10.2139/ssrn.3349295","DOIUrl":"https://doi.org/10.2139/ssrn.3349295","url":null,"abstract":"Advancement in software technologies has helped IT developers to work efficiently and enhance quality of the products but simultaneously; it has also presented the problem of increasing complexity in terms of software architectures, programming code and software management task. These issues raise chances of vulnerabilities in the software system. Run-time solution to the faults and failures of software need to be done. One such solution for handling run-time management tasks is Autonomic Computing. Autonomic computing technique, automate the management task to prevent the occurrence of vulnerability based issues. Further, to reduce the occurrence of system failures, an idea to provide an autonomic advisor to the Software Development Life Cycle process has been proposed in this paper. The autonomic advisor gives autonomic features based required suggestions to the developers during the software development process. It will also help to perform risk analysis during development. This will lead to the development of quality and efficient software systems. This paper also provides a review of the existing work of the autonomic computing including its challenges and their effects on management process of the system.","PeriodicalId":18731,"journal":{"name":"Materials Processing & Manufacturing eJournal","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73291560","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

Enhanced Security in Cloud Using Data Partitioning Technique 使用数据分区技术增强云中的安全性

Materials Processing & Manufacturing eJournal Pub Date : 2019-02-22 DOI: 10.2139/ssrn.3351651

Taranpreet Singh Ruprah, A. Dange

引用次数: 1