Pakistan Journal of Engineering Technology最新文献_第9页

An integrated production planning and scheduling framework for make-to-order environment 一个集成的生产计划和调度框架，为订制环境

Pakistan Journal of Engineering Technology Pub Date : 2013-07-01 DOI: 10.4103/0976-8580.113058

Viraj Tyagi, Ajai Jain, P. K. Jain

引用次数: 1

Seismic performance study on exterior beam-column joint with mechanical anchorage for different joint core details 不同节点核心结构下带机械锚固的外梁柱节点抗震性能研究

Pakistan Journal of Engineering Technology Pub Date : 2013-07-01 DOI: 10.4103/0976-8580.113055

R. Saminathan, P. Shamugasundaram

{"title":"Seismic performance study on exterior beam-column joint with mechanical anchorage for different joint core details","authors":"R. Saminathan, P. Shamugasundaram","doi":"10.4103/0976-8580.113055","DOIUrl":"https://doi.org/10.4103/0976-8580.113055","url":null,"abstract":"In the present study, in reinforced concrete structures, beam-column connections are one of the most critical regions in higher seismic prone areas. Proper reinforcement anchorage is essential to enhance the performance of the joints. Congestion of reinforcement and construction difficulties are reported frequently while using the conventional reinforcement detailing in the joint core area. An attempt has been made to study and evaluate the performance of joints with anchorage detailing as per American Concrete Institute (ACI)-352, ACI-318, and Indian Standard (IS)-456 along with confinement as per IS-13920 and without confinement. Apart from a solution for these problems, significant improvements in seismic performance, ductility, and strength were observed while using the mechanical anchorage (headed bar) in combination with X-cross plus hair clip (U-bar) joint reinforcement for higher seismic prone areas. To evaluate the performances of these types of anchorages and joint details, the specimens were assembled into two groups, each group having three specimens were tested under reversal loading and the same are presented in this paper.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86026136","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

Application of superconducting magnet energy storage to a multi-area automatic generation control scheme suitable in a restructured power system 超导磁体储能在多区域自动发电控制方案中的应用

Pakistan Journal of Engineering Technology Pub Date : 2013-07-01 DOI: 10.4103/0976-8580.113044

S. Bhongade, B. Tyagi

引用次数: 0

Design and Development of Cost-Effective Global Positioning System General Packet Radio Service: Based Soldier Tracking System 基于通用分组无线电业务的高性价比全球定位系统的设计与开发

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107099

L. Kumar

引用次数: 3

Multi-Response Optimization of Electrical Process Parameters on Machining Characteristics in Electrical Discharge Machining Using Taguchi-Data Envelopment Analysis-Based Ranking Methodology 基于田口数据包络分析法的电火花加工工艺参数对加工特性的多响应优化

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107103

T. Muthuramalingam, B. Mohan

{"title":"Multi-Response Optimization of Electrical Process Parameters on Machining Characteristics in Electrical Discharge Machining Using Taguchi-Data Envelopment Analysis-Based Ranking Methodology","authors":"T. Muthuramalingam, B. Mohan","doi":"10.4103/0976-8580.107103","DOIUrl":"https://doi.org/10.4103/0976-8580.107103","url":null,"abstract":"Since electrical process parameters are determining the machining characteristics of electrical discharge machining (EDM), it is important to find the optimum values of those parameters and contribution of each parameter. As the process involves more than one response parameter, it is needed to implement the multi-response optimization methodology. AISI 202 stainless steel was selected as work piece material, whereas copper, brass, and tungsten carbide were selected as tool materials. The experiments were conducted with different levels of input factors such as gap voltage, discharge current, and duty factor based on L9 orthogonal table. The purpose of this study is to investigate the contribution of electrical process parameters on machining characteristics and optimal combination of those parameters using Taguchi-data envelopment analysis-based ranking method. From the results, it is revealed that electrical parameters have significant role in EDM process and the optimal values have been found using proposed multi-response methodology.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80441481","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

A Research about Pattern Recognition of Control Chart Using Optimized ANFIS and Selected Features 基于优化ANFIS和选择特征的控制图模式识别研究

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107095

J. Addeh, A. Ebrahimzadeh, H. Nazaryan

{"title":"A Research about Pattern Recognition of Control Chart Using Optimized ANFIS and Selected Features","authors":"J. Addeh, A. Ebrahimzadeh, H. Nazaryan","doi":"10.4103/0976-8580.107095","DOIUrl":"https://doi.org/10.4103/0976-8580.107095","url":null,"abstract":"Unnatural patterns in the control charts can be associated with a specific set of assignable causes for process variation. Hence pattern recognition is very useful in identifying process problem. This article introduces a novel hybrid intelligent system that includes three main modules: a feature extraction module, a classifier module, and an optimization module. In the feature extraction module, a proper set combining the shape features and statistical features is proposed as the efficient characteristic of the patterns. In the classifier module, adaptive neuro-fuzzy inference system (ANFIS)-based classifier is proposed. For the optimization module, cuckoo optimization algorithm (COA) is proposed to improve the generalization performance of the recognizer. In this module, it the ANFIS classifier design is optimized by searching for the best value of the parameter and looking for the best subset of features that feed the classifier. Simulation results show that the proposed algorithm has very high recognition accuracy (RA). This high efficiency is achieved with only little features, which have been selected using COA.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88534073","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: 7

Flank Wear Prediction Model Development by Response Surface Methodology 基于响应面法的翼面磨损预测模型的建立

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107100

Satpal Sharma

引用次数: 1

Evaluation of Mechanical Characteristics for Mineral Cast Materials with Varying Resin Content 不同树脂含量矿物铸造材料力学特性的评价

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107102

A. Selvakumar, P. Mohanram

{"title":"Evaluation of Mechanical Characteristics for Mineral Cast Materials with Varying Resin Content","authors":"A. Selvakumar, P. Mohanram","doi":"10.4103/0976-8580.107102","DOIUrl":"https://doi.org/10.4103/0976-8580.107102","url":null,"abstract":"Alternative materials are under study, to improve the stiffness and strength of the machine tool structure and to reduce the geometrical inaccuracies caused due to positional errors developed by conventional materials. The mechanical properties exhibited by mineral-cast structures such as high damping and high structural stiffness along with good strength and reduced weight make them attractive as alternative material. However, the mechanical properties of the material vary with the proportion of components in the mixture. This study attempts to evaluate the mechanical characteristics of mineral-cast material with varying epoxy content in the mixture. The epoxy content in the mixture is varied between 10% and 18% and the mechanical characteristics such as compressive strength, tensile strength, and Young's modulus are evaluated to arrive at an optimum composition of mixture. Granite which has high compressive strength is selected and crushed into fine and coarse particles and used as aggregate. It is mixed with epoxy resin to prepare the test specimen by pouring the mixture into a wooden mold of required size and shape. The mixture is cured for 1 week in order to obtain better results. It is observed that with increase in resin content from 10% to 14%, properties, such as stiffness and strength improve and then it starts diminishing. A combination with 12% epoxy resin and 88% aggregate material is observed to produce favorable mechanical properties at an optimum cost.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81282497","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

An Improved Approach for the Global Positioning System Geometric Dilution of Precision Classification 一种改进的全球定位系统几何稀释精度分类方法

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107094

S. M. Anisheh, M. Malekzadeh, M. Saraf, A. Khosravi

{"title":"An Improved Approach for the Global Positioning System Geometric Dilution of Precision Classification","authors":"S. M. Anisheh, M. Malekzadeh, M. Saraf, A. Khosravi","doi":"10.4103/0976-8580.107094","DOIUrl":"https://doi.org/10.4103/0976-8580.107094","url":null,"abstract":"The effect of geometry on the relationship between measurement error and position determination error is described by geometric dilution of precision (GDOP). It is illustrated that a subset with lowest GDOP will result in lowest error. Since the global positioning system (GPS) GDOP computation based on complicated transformation and inversion of measurement matrices is a time consuming procedure, the neural network (NN) is used as an approximator or classifier for GDOP data. The back propagation (BP) is a most common method to train a feed-forward NN. However, in many applications including the GPS GDOP classification, it cannot train an NN with an acceptable speed and accuracy. Therefore, in this paper, a new approach to classify the GPS GDOP by using scaled conjugate gradient algorithm (CGA) to train a feed-forward NN and principal component analysis (PCA) is proposed. Scaled CGA is a powerful tool to train an NN, which is widely used in many applications that need to a high speed. PCA is a well-known method to reduce and optimize the dimensions of the data. PCA is applied on entire dataset in order to have some few uncorrelated and informative features. The results show that the scaled CGA with PCA has better performance than the scaled CGA without PCA and also, scaled CGA without PCA has better performance than the basic BP.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75870931","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: 9

Strengthening of Corroded Hollow Structural Steel Tubular Members Using Fibre Reinforced Polymer Fabrics: An Experimental Investigation 纤维增强聚合物织物加固腐蚀空心钢管构件的试验研究

Pakistan Journal of Engineering Technology Pub Date : 2013-01-01 DOI: 10.4103/0976-8580.107096

M. C. Sundarraja, P. Sriram, G. Prabhu

{"title":"Strengthening of Corroded Hollow Structural Steel Tubular Members Using Fibre Reinforced Polymer Fabrics: An Experimental Investigation","authors":"M. C. Sundarraja, P. Sriram, G. Prabhu","doi":"10.4103/0976-8580.107096","DOIUrl":"https://doi.org/10.4103/0976-8580.107096","url":null,"abstract":"The main objective of this investigation is to experimentally investigate the suitability of carbon fibre reinforced polymer (CFRP) in strengthening artificially degraded hollow structural steel (HSS) tubular members. In order to obtain uniform corrosion, all the tubular columns were artificially degraded by heavier solution mechanism. CFRP fabrics were used as strips form with other parameters such as the number of layers and spacing of strips. Experiments were undertaken until failure to fully understand the influence of FRP characteristics on the compressive behavior of strengthened hollow tubular columns. The experimental results revealed that the external bonding of normal modulus CFRP strips significantly enhanced the load carrying capacity and stiffness of the HSS tubular sections and also delays the axial shortening of column by providing confinement/restraining effect against the elastic deformation. And also, increase in thickness of CFRP strips effectively delays the local buckling of HSS column and lead to the inward buckling rather than outward.","PeriodicalId":53400,"journal":{"name":"Pakistan Journal of Engineering Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4103/0976-8580.107096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72518598","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