2011 National Postgraduate Conference最新文献_第6页

Optimum configuration of fin trees in cooling channels of injection moulding process 注射成型冷却通道翅片树的优化配置

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136397

Nadhrah Mohd Jamaludin, A. Rani

{"title":"Optimum configuration of fin trees in cooling channels of injection moulding process","authors":"Nadhrah Mohd Jamaludin, A. Rani","doi":"10.1109/NATPC.2011.6136397","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136397","url":null,"abstract":"The process cycle time in injection moulding process depends significantly on the cooling time of the plastic part, which is facilitated by the cooling channels in the injection mould. Effective cooling channel design in the mould is important because it not only affects cycle time but also the part quality. Conventional cooling channels are normally made of straight drilled holes in the mould, which have limitations in geometric complexity as well as cooling fluid mobility within the injection n mould. Over the years, conformal cooling techniques are being introduced as effective alternative to conventional cooling. Many process of Rapid Tooling (RT) have been proven useful for designing the conformal cooling channels to enhance the cooling time for injection moulding process. Nevertheless, no studies had been published where the additive fabrication technique of three-dimensional printer (3DP), has been used to make an injection molding tools extended to the optimum configuration of fin trees in cooling channels of injection molding process. At one point, the cooling effectiveness of the fin tree would approach an asymptotic limit. Further attempts at improvement would not give benefits commensurate with the required effort. To identify this optimum solution is the ultimate objective of the chosen research problem by combining both experimental and numerical approaches. Design of mould was carried out using commercial computer aided design software Solid Work while the part cooling time is optimized by conformal cooling channels in the mould using the ANSYS thermal analysis software.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"96 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78615212","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

Friction stir welding on aluminum 6092/sic/25p/t6 metal matrix composite: Its microstructure evolution and mechanical properties 铝6092/sic/25p/t6金属基复合材料的搅拌摩擦焊:组织演变及力学性能

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136404

U. Patthi, M. Awang

{"title":"Friction stir welding on aluminum 6092/sic/25p/t6 metal matrix composite: Its microstructure evolution and mechanical properties","authors":"U. Patthi, M. Awang","doi":"10.1109/NATPC.2011.6136404","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136404","url":null,"abstract":"This paper focuses on the application of friction stir welding (FSW) as a joining process for aluminium metal matrix composite (MMC). FSW is known as a relatively new joining technique and in Malaysia the application of the technique is still in its infant stage. Among the advantages of this method compared to the conventional joining technique is that it reduces problem associated to metal re-solidification as the technique involves no melting stages. In addition the welding strength is higher; reduce in energy consumption and a longer tool life. Recently several substantial studies have been conducted to further extent the application of FSW. One of these studies is the application of FSW on newer materials such as aluminium MMC. This material has been chosen because of its ever expanding potential in the industry and its unique properties when compared to other materials. In the past, the material development was only focusing on the aerospace field applications, but recently the development of the material have been directed towards automotive, transportation, recreation and as well in the electronic industry. The objective of this paper is to analyze the microstructure and mechanical properties of the aluminium MMC joining through friction stir welding.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78839650","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: 5

An overview of over-expression of C4-cycle enzymes into C3 plants c4循环酶在C3植物中的过表达研究综述

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136448

M. Jafarpour, R. Nulit

{"title":"An overview of over-expression of C4-cycle enzymes into C3 plants","authors":"M. Jafarpour, R. Nulit","doi":"10.1109/NATPC.2011.6136448","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136448","url":null,"abstract":"An overview of biochemical and physiological consequences of the over expression of C<inf>4</inf> -cycle genes in C<inf>3</inf> plant are presented. The methodology, based on the evolutionary situation, has enabled enzymes involved in the C<inf>4</inf> pathway to be expressed at high levels and in required sites in the leaves of C<inf>3</inf> plants. Even though overproduction of a single C<inf>4</inf> enzyme can modify the carbon metabolism of C<inf>3</inf> plants, it does not show any positive effects on photosynthesis. Transgenic C<inf>3</inf> plants overproducing multiple enzymes are now being produced for improving the photosynthetic performance of C<inf>3</inf> plants. The results show that a combined over expression of C<inf>4</inf> -cycle genes could supply additional information on whether or not these enzymes may work in concert. Single over expression of C<inf>4</inf> -cycle genes might perturb metabolism, as all C<inf>4</inf> enzyme also have individual functions in c<inf>3</inf> plants. The analysis of double and multiple transformants might help to highlight the possibility of the approach to create a single cell C<inf>4</inf> cycle in C<inf>3</inf> crops.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"31 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79140061","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

Maintenance factor for precast concrete in IBS: A review IBS预制混凝土养护系数综述

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136352

N. Kiong, Z. Akasah

{"title":"Maintenance factor for precast concrete in IBS: A review","authors":"N. Kiong, Z. Akasah","doi":"10.1109/NATPC.2011.6136352","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136352","url":null,"abstract":"Industrialized Building System(IBS) is one of the construction method that utilized where the components are manufactured in factory or in-situ. Each components are produced in a controlled and monitored environment, transported and installed with minimum workforce. This system are widely used in Malaysia and commonly there are six types of IBS which known as precast concrete frame, formwork system, steel formwork system, steel frame system, prefabricated timber system, block work systems and other innovative system. But at the same time, when a building was built by the IBS system, there are lots of maintenance problem that affect the building operation and quality. Hence, the factor that affect the quality of the IBS building should be identify and find out the solution to overcome the problem. Thus, this study will focus on poor practicing in design stage, manufacturing stage and construction stage that affect the quality of the building which leads to building maintenance. The objective of this study is to identify the factors of defect during design, construction and manufacturing stage of precast concrete that affect the quality of the building, then identify factors that are related to poor maintenance consideration during design, manufacturing and construction stage and last but not least to recommend solutions to overcome problem. All the data collection will be done in the form of questionnaire and distributed to the contractors, consultants and manufacturers. The IBS building maintenance problem in civil and architectural will be collect after the feedback from the potential respondent and analysis through the Statistical Package for the Social Science (SPSS) and note down in a check list. Hopefully from the analysis, a crucial part of the factor that affect the quality of the precast concrete building will be identified and will be supported through the propose suggestion and solution that will reduce the cost and time of maintenance in IBS building which use the precast concrete method.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":"42 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79519144","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: 6

Cost model for end-milling of AISI D2 tool steel AISI D2工具钢立铣削成本模型

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136403

Mohamed Elhadie, A. Karim, A. Amin

引用次数: 1

The effect of bentonite loading on the curing, tensile and morphological properties of Ethylene-Propylene-Diene Monomer (EPDM) composites 膨润土负载对EPDM复合材料固化、拉伸及形态性能的影响

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136540

M. Mathialagan, H. Ismail

引用次数: 0

A mathematical model for residence time distribution analysis in swirling fluidized bed 旋流流化床停留时间分布分析的数学模型

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136392

A. S. M. Yudin, V. Raghavan, M. Narahari

引用次数: 4

Wind farm allocation in Malaysia based on multi-criteria decision making method 基于多准则决策方法的马来西亚风电场配置

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136445

Goh Hui Hwang, Lee Sian Wei, K. B. Ching, Ng Suan Lin

引用次数: 16

Developments in fluidized bed technology — A review 流化床技术的发展综述

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136395

V. Kumar, V. Raghavan

引用次数: 0

Use of a membrane bioreactor in effluent treatment from electroplating industry: Oil and grease 膜生物反应器在电镀工业废水处理中的应用:油和油脂

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI: 10.1109/NATPC.2011.6136254

D. Hasan, M. Ghengesh, M. A. Hassan, Z. Noor, A. Yuniarto, M. H. Chakrabarti, M. Islam, B. S. Ali, G. M. A. Khan

引用次数: 0