2018 Moratuwa Engineering Research Conference (MERCon)最新文献_第3页

An Improved Fixturing Solution for Holding Complex Shaped Components 一种用于固定复杂形状零件的改进夹具解决方案

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421912

B. Balasuriya, H.W.P. Bhanuka, Hkt Sampath, A. Kulasekera, N. Jayaweera

{"title":"An Improved Fixturing Solution for Holding Complex Shaped Components","authors":"B. Balasuriya, H.W.P. Bhanuka, Hkt Sampath, A. Kulasekera, N. Jayaweera","doi":"10.1109/MERCON.2018.8421912","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421912","url":null,"abstract":"Manufacturing industry faces several challenges when manufacturing complex shaped components. One such challenge is holding complex shaped components. For such instances, various dedicated fixturing methods are used, reducing the flexibility and increasing the initial cost in manufacturing. Pin type fixturing methods are the dominating method of fixturing for complex shaped components. But the point loading from pin type fixturing methods can lead to surface damage reducing the quality of the product. So various methods have been introduced to reduce the negative effects from point loading. Granular jamming is one such method that has been of recent interest. The fixturing force granular jamming materials can provide depends on various factors including membrane properties. This research paper describes how the fixturing force provided by granular jammed pin type method vary on the thickness of the granular jamming membrane and how negative pressure variation affect the fixturing force from granular jamming. The membrane in this study is made out of latex using simple dipping techniques. According to the results of experiments carried out, fixturing force increases with increase of thickness in jamming membrane and when negative pressure is increased. Further, a novel configuration to increase fixturing force with a tubular membrane mounted on two pins was experimented. Experiments revealed that higher fixturing force can be obtained through such a novel configuration.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"12 1","pages":"555-559"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86885199","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

Determination of Thermal Conductivity of LDPE Using Dual Hot Wire Probe Method 双热丝探针法测定LDPE的导热系数

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421899

C. S. Witharamage, M. Maddumage, V. Weragoda

{"title":"Determination of Thermal Conductivity of LDPE Using Dual Hot Wire Probe Method","authors":"C. S. Witharamage, M. Maddumage, V. Weragoda","doi":"10.1109/MERCON.2018.8421899","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421899","url":null,"abstract":"Thermal conductivity is the one of most significant parameters in materials when it comes to the industrial applications, it is important to know the thermal conductivity of materials for materials selection, especially when thermal insulation is required. However, the techniques available in laboratory scale to measure the thermal conductivity of poor thermal conductors like polymers, meeting reliability and economy are not available. This research focuses on developing an instrument to measure the thermal conductivity of polymers that overcome the inherent problems in the existing methods. Measuring of the thermal conductivity can be done either at the steady state conditions or transient conditions. The temperature measurements of the polymer specimen in the transient state were done based on the well-known “Transient Hot-Wire Probe Theory”. Here, basically the temperature of a linear heat source embedded in the specimen, which is read at different time intervals and supplied energy to the heat element were the interested quantities and a programmed micro-controller was used to control the sensing elements of the system (thermocouples, current and voltage sensors) by performing pre-defined or user intended functions. Likewise microcontroller then reads out the sensor signals accordingly, to process and produce results in a useful manner (temperature vs time behavior) so that the thermal conductivity can be calculated according to the theory.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"1 1","pages":"259-263"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78613448","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

Fuzzy-Bot: A Food Serving Robot as a Teaching and Learning Platform for Fuzzy Logic 作为模糊逻辑教学平台的食品服务机器人Fuzzy- bot

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421898

H.S. Selaka, Kapila Perera, M.A.W.T. Deepal, P.D.R. Sanjeewa, H. Chapa Sirithunge, A. Jayasekara

{"title":"Fuzzy-Bot: A Food Serving Robot as a Teaching and Learning Platform for Fuzzy Logic","authors":"H.S. Selaka, Kapila Perera, M.A.W.T. Deepal, P.D.R. Sanjeewa, H. Chapa Sirithunge, A. Jayasekara","doi":"10.1109/MERCON.2018.8421898","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421898","url":null,"abstract":"Fuzzy Logic has become an emerging control mechanism in robotics as well as in many other streams. Hence fuzzy logic is an often-talked topic in teaching as well as learning. This paper presents a robot platform used to demonstrate applications of fuzzy logic in both teaching and learning aspects. A food serving robot is developed to demonstrate the changes in the actions of the robot based on the inputs from the environment while delivering foods and beverages. Here, the inputs from the environment are the parameters related to the navigation of the robot. Actions of the robot while serving a human user are decided based on a predefined set of fuzzy rules. These rules can be altered as preferred by the user, in order to understand complex fuzzy applications depending on the scenario. An observer would be able to understand how fuzzy rules change the perception of robot about the environment, through this demonstration. An experiment is conducted in a simulated environment in the laboratory to evaluate the behavior of this system and the results of the experiment are presented.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"69 1","pages":"565-570"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79261410","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

A Mathematical Model to Predict the Microalgal Growth in an Open Pond Cultivation : A location based approach 露天池塘微藻生长预测的数学模型:基于位置的方法

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421964

M. N. Rammuni, T. Ariyadasa, P. Nimarshana, RA Attalage

引用次数: 1

Design and Development of a Smart Wheelchair with Multiple Control Interfaces 多控制接口智能轮椅的设计与开发

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421945

H. G. M. T. Yashoda, A. M. S. Piumal, P. G. S. P. Polgahapitiya, M. M. M. Mubeen, M. Muthugala, A. Jayasekara

{"title":"Design and Development of a Smart Wheelchair with Multiple Control Interfaces","authors":"H. G. M. T. Yashoda, A. M. S. Piumal, P. G. S. P. Polgahapitiya, M. M. M. Mubeen, M. Muthugala, A. Jayasekara","doi":"10.1109/MERCON.2018.8421945","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421945","url":null,"abstract":"The degradation of mobility is one of the major concerns that affect the independent living ability of elderly/disabled people. Therefore, mobility assistive devices are being developed to uplift the living standards of the people. However, the existing mobility assistive devices require improvements. This paper presents about design and development of a smart wheel chair with multiple control interfaces. A prototype of the smart wheelchair system has been developed based on a conventional wheelchair that is commonly available in the market, with the addition of related electrical and mechanical advancements. Voice and gesture controlling interfaces are deployed to the system in addition to the conventional joystick-controlling interface to enhance the interaction with the user. Particulars on the mechanical design, the electrical and control system of the smart wheelchair are presented. Experiments have been conducted to verify the functionality of the developed smart wheelchair. Furthermore, the user preferences between the different controlling interfaces have been evaluated through a user study and the results are presented.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"9 4","pages":"324-329"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72606979","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: 24

Current Practices of Sustainable Procurement in the Sri Lankan Construction Industry 斯里兰卡建筑业可持续采购的现行做法

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421935

H. Rosayuru, K. Waidyasekara, M. Wijewickrama

{"title":"Current Practices of Sustainable Procurement in the Sri Lankan Construction Industry","authors":"H. Rosayuru, K. Waidyasekara, M. Wijewickrama","doi":"10.1109/MERCON.2018.8421935","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421935","url":null,"abstract":"Construction project procurement is a fundamental process in construction project management. The current conventional procurement practices have been widely criticised due to associated issues including disregarding sustainability. Even if, Sustainable Procurement (SP) has been emerged as one of the best solutions for such issues, current practice level of SP in Sri Lanka (SL) is unclear. Therefore, the aim of this study is to review SP practices in Sri Lankan construction industry. Concurrent triangulation mixed method was used in this study by combining both qualitative and quantitative research approaches. Data was collected through questionnaire surveys and semi-structured interviews and analysed using statistical analysis and content analysis respectively. Data triangulation was used to combine the results of all three research tools. The study proved that SP principles have been used in Sri Lankan construction industry at a moderate level. Limited sustainability initiatives were used in the project procurement, while economical sustainability criteria were given the prominence. Furthermore, SL is at a lower level of practicing SP when compared with most of developed countries like United Kingdom (UK) and Canada. Non-availability of policies, procedures and legislations in regional or national levels is the main factor that limit the SP practices. Further, the study identified drivers which influence the practice level of SP in SL.Thus, the study recommended that strengthening drivers and mitigating constrains are the appropriate strategies to increase the level of practice of SP in Sri Lankan construction industry.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"105 1","pages":"144-149"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80690662","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

Impact of Large-Scale Wind and Solar Power Integration on Operating Reserve Requirements of an Islanded Power System 大规模风能与太阳能并网对孤岛电力系统运行备用需求的影响

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421919

M.H.T.T. Thilekha, K. Siriwardana, N. Siebel, D.A.D. Waslathanthri, N. Lidula, T. Siyambalapitiya, A. Wickramasinghe

{"title":"Impact of Large-Scale Wind and Solar Power Integration on Operating Reserve Requirements of an Islanded Power System","authors":"M.H.T.T. Thilekha, K. Siriwardana, N. Siebel, D.A.D. Waslathanthri, N. Lidula, T. Siyambalapitiya, A. Wickramasinghe","doi":"10.1109/MERCON.2018.8421919","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421919","url":null,"abstract":"Many nations have shown their support to a battle against environmental pollution by integrating large scale solar and wind energy resources, to their respective grids. Although these commendable efforts have paved the way for a greener future, it has to be noted that non-conventional renewable energy (NCRE) possess their own inherent drawbacks. Their availability is highly dependent on the prevalent weather conditions, which means that they are subjected to uncontrollable variability. With the rise of intermittent renewable resources, it is important to have appropriate amounts of operating reserves to provide back-up to the system. This will ensure that the system will be stable under variable power conditions and thus, improve the reliability of the system. This paper is focused in quantifying additional operating reserves requirements to stabilize the system under intermittent conditions with the large penetration of renewables into an islanded power system. It assesses the spinning reserve requirement during the high wind and low wind seasons.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"26 7","pages":"589-594"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91439102","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

Analysing Non-Isothermal Curing Behaviour of Natural Rubber Compounds By Mathematical Modelling of Oscillating Disc Rheometer Curves 用振荡盘流变仪曲线的数学模型分析天然橡胶化合物的非等温固化行为

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421920

V. Weragoda, A. Samarasekara

引用次数: 2

Design and Development of an Interactive Service Robot as a Conversational Companion for Elderly People 交互式老年人会话服务机器人的设计与开发

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8421933

G. W. Malith Manuhara, M. Muthugala, A. Jayasekara

{"title":"Design and Development of an Interactive Service Robot as a Conversational Companion for Elderly People","authors":"G. W. Malith Manuhara, M. Muthugala, A. Jayasekara","doi":"10.1109/MERCON.2018.8421933","DOIUrl":"https://doi.org/10.1109/MERCON.2018.8421933","url":null,"abstract":"Introduction of service robots has become a very promising development in addressing problems faced by elderly population in the world. This paper proposes a robot conversational companion capable of voice interacting with elders in human-like dialogues, during service assistance. A system consisting of a finite state interaction module and a regular expression based language identification method have been introduced for facilitating this task. A knowledge database containing language, user and object specific data has been designed, implemented and connected with the above system to enable more meaningful and natural dialogue creation. State transition diagram and event flow diagrams explaining the functionality of the system are presented. The proposed system has been implemented on a robot named Moratuwa Intelligent Robot (MIRob). The performance of the proposed system has been evaluated through a user study. Experimental results including a selected segment of a conversation are presented with an analysis. The evaluation results have indicated a high user satisfaction rate validating the robots capability to interact in a human-friendly manner during service assistance.","PeriodicalId":6603,"journal":{"name":"2018 Moratuwa Engineering Research Conference (MERCon)","volume":"29 1","pages":"378-383"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81883540","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

Nano-Silver Impregnated Wrapping Film to Keep Fruit Fresh 纳米银浸渍水果保鲜膜

2018 Moratuwa Engineering Research Conference (MERCon) Pub Date : 2018-05-01 DOI: 10.1109/MERCON.2018.8422003

D. Amarasinghe, A. Samarasekara, W. Madhuwanthi, D. Dammage

引用次数: 11