|Title: Modal analysis of Pneumatic two Finger Robotic hand by Finite Element Analysis and Experimental Testing|
|Author(s): Safeen Yassen Qassab, Hussein Ali Sultan, Shirin Othman Mohammad|
|Pages: 1-9||Paper ID: 130203-5656-IJET-IJENS||Published: June, 2013|
Abstract: The objective of the present work was studying the technique of modal analysis using theoretical, numerical and experimental methods .Two axis modal finger of pneumatic robotic hand was designed and built. The theoretical modeling was done by deriving equations of stress and deflection depending on the free body diagram of robotic clamp, finite element analysis was performed using Comsol Multi physics 3.5a software program. The modal testing was done by dial and pressure gauges. For each method dynamic stress and deflection were found, and the results from all three analyses were compared and proved that the rated deflection and stresses that calculated from the theoretical calculation make a good agreement with the results obtained from the finite element analysis and experimental testing. The acceptable maximum holding weight of designed hand was found to be 400g.
|Keywords: Pneumatic hand, two axis finger, Comsol software, Finite Element Analysis.|
|Full Text (.pdf) | 946 KB|
|Title: Analysis of Operating Temperature, Humidification Temperature and Oxidant Composition based PEM Fuel Cell Performance|
|Author(s): Muhammad Ali, Arshad Nawaz, Malik Ansar, Faheem Khan|
|Pages: 10-13||Paper ID: 137103-8585-IJET-IJENS||Published: June, 2013|
Abstract: Polymer electrolyte membrane fuel cell (PEMFC) achieved great attention in the recent years because of efficient energy production with zero toxic emission. The overall performance of PEM energy cells is determined by many parameters such as fuel/oxidant ratio, operating and humidification temperatures. In this paper, Sequence of polarization curves have been analyzed with different fuel cell operating temperature, humidification temperatures, and mass (oxygen) transfer ratio and can be calculated to measure the performance factors of Fuel cell.
|Keywords: Fuel cell/energy cell, Operating temperature, Humidification temperature, activation loss, Ohmic loss, mass transport loss.|
|Full Text (.pdf) | 517 KB|
|Title: Designing and Manufacturing a Device of Transmission and Recording Vital Signs through Mobile Phone Network|
|Author(s): Jafar Aghazadeh, Ali Vahdati Helan, Maghsoud Eivazi Gh., Mohammad Vahdati Helan|
|Pages: 14-18||Paper ID: 1312601-1303-5959-IJET-IJENS||Published: June, 2013|
Abstract: The existing design tries to investigate monitoring system of vital signs using mobile phone network located in Eastern Azerbaijan developing science and technology park center. This system involves vital sign measurement including electro cardiogram, heart beats, blood pressure and body temperature. Moreover it identifies patient's health information which is under the control of their own resident. Initial sample obtained from this system was examined and administered by our team members in research unit of growth center. We have used GPS and GPRS in this system.  This experiment provides controlling system development; consequently patient vital signs and his health conditions can be expectant at real controlling time while he is out of hospital. Patients' health information can also be registered. More over number of patients can be determined using this system. In spite of this the system can be developed for more controlling complete health. Accordingly underlined system can be used for industrial production, development and real operation with low cost.
|Keywords: Vital signs, heart beats, blood pressure, body temperature, health controlling, chronic patient.|
|Full Text (.pdf) | 672 KB|
|Title: Robotics and Automations in Construction:Advanced Construction and FutureTechnology|
|Author(s): Sajjad Yaghoubi|
|Pages: 19-25||Paper ID: 134401-1303-0505-IJET-IJENS||Published: June, 2013|
Abstract: Research in construction automation and robotics has increased in popularity over the past few years. Although interest is high in the research and education communities, sustaining robust programs is difficult due to the diverse interests of constituents associated with the research and development process. The main goal of this paper is to convince building designers and managers to incorporate robotic systems when managing modern buildings. The premise of this paper is that there is a need to develop and maintain strong construction automation and robotics programs. This paper studies recent applications for robots and automation in the construction industry and sets opportunities and challenges through a new framework for better planning and control of construction equipment operation. One way to assist in this goal is to address the concerns of the constituencies of research and development by focusing on a process leading to implementation. The interests of the constituents of the research and development process are examined, a process leading to implementation is presented, and results from a recently completed research project are presented as an example of the process. It is concluded that a systematic approach such as the one presented will enhance the success of construction automation and robotics programs as well as lead to faster adoption of advanced technologies for field applications.
|Keywords: Robotic, Automation, Construction, Modern buildings, Industry.|
|Full Text (.pdf) | 452 KB|
|Title: Evaluation of the Seismic Performance of RC Buildings in KSA According to the Seismic Requirements of the Saudi Building Code and Suggesting the Retrofit Systems|
|Author(s): Abo El-Wafa, W. M., Mostafa, M. M. 1, Almalki, A. H.|
|Pages: 26-33||Paper ID: 135303-2424-IJET-IJENS||Published: June, 2013|
Abstract: The first Saudi Building Code (SBC) was issued in 2007 to be verified and tentatively applied reaching to the obligatory application. In the recent decades, many quakes have hit the Kingdom of Saudi Arabia (KSA). The hollow block slab system is widely used in the residual and commercial buildings due to the variety of advantages they introduce. This study presents a performance assessment analysis of hollow block slab type R.C buildings designed as a gravity load or prior to the application of the seismic requirements of the SBC. The sample building is assumed to be located in three cities with different seismic intensities (small, medium and high). The 3-D nonlinear pushover analysis procedure is utilized in evaluating the seismic performance of the original building.Three different retrofit techniques are proposed and analyzed. The design response spectrum suggested by the SBC for the selected cities are used in the nonlinear pushover analysis. This is along with using a real compatible earthquake in carrying out a time history analysis. A comparative quantity and cost analysis between the proposed retrofittedsystems is also carried out. It is found that the gravity load designed hollow block slab building completely fails, in many cases, from meeting the response spectrum suggested by the SBC. The three suggested retrofitting methods can highly increase both the strength and stiffness of the original building and hence its spectral acceleration. All the suggested retrofitting systems enable the original building to meet all of the applied response spectrum at reliable performance points. The study also shows how every suggested retrofitting system can upgrade the seismic behavior of the original building. Quantity and cost analysis comparison study is also carried out.
|Keywords: Seismic evaluation, nonlinear pushover analysis, hollow block slab building, retrofit systems.|
|Full Text (.pdf) | 620 KB|
|Title: Model of Municipal Solid Wastes Transportation Costs Type Dump Truck (Case Study at The Malang City, Indonesia)|
|Author(s): Burhamtoro, Achmad Wicaksono, M. Bisri, Soemarno|
|Pages: 34-40||Paper ID: 136303-5757-IJET-IJENS||Published: June, 2013|
Abstract: The increasing volume of municipal solid waste resulting in the rising of frequency and transportation costs on the temporary disposal station is called TPS to Landfill (TPA).This recent study is to examine the cost model based on the speed of the vehicle transporting waste using Dump Truck types from TPS to TPA with various brands of vehicles. This study applies survey method in which the researchers investigate the distance, time and volume of the waste transported by the entire fleet. The results of Model Municipal Solid Waste Transportation Costs obtained equation: Y = 7,66x2 – 580,81x + 15454,79. Y variable indicates the transportation cost (Rupiah/m3) and X variable points out the speed (km/ h). Cost of transporting waste to urban areas at optimum speeds obtain 37.91 Km/hour with minimum waste transportation costs Rp 4.445, -/m3.
|Keywords: Municipal Solid Waste, speed of vehicles, Transportation Costs.|
|Full Text (.pdf) | 462 KB|
|Title: Failure Analysis and Optimisation of Tube Water Cooler of Hydropower Plant|
|Author(s): Bambang Teguh P., Dadang Hidayat, D. N. Adnyana|
|Pages: 41-46||Paper ID: 134203-8282-IJET-IJENS||Published: June, 2013|
Abstract: A shell and tube cooler is used to cool the cooling water of oil cooler. This cooling water of the oil cooler cools the oil that lubricates the generator thrust and guide bearings, turbine guide bearing, and the governor oil sump tank at a hydroelectric unit, in a closed system. Cooling water is treated water while a cooler fluid in shell and tube is raw water with an open circuit. The debit of treated water and raw water is 37.8 m3/hr and 54m3/hr respectively. Allowable pressure drop for the two fluids is 1.6 mWS for treated water and 0.3 mWS for raw water respectively. Treated water flows through the tube side with inlet and outlet temperatures of 42oC and 38oC, whilst the raw water flows through the shell side with inlet and outlet temperatures of 30oC and 32oC. The cooler tube is made of copper with a purity of 99.9%, and is designed to operate for 5 years. The shell and tube cooler has been in operation for 2 years and suffered damage (leaks) in tubes under the shell inlet nozzle, in the top row. Damage in the form of a large tear having with local deformation, corrosion and fouling was observed. To find the cause of the damage a number of laboratories testing on tube material samples and raw water samples has been performed. The tests performed included the microstructure and mechanical properties examinations, water quality testing, corrosion and its rate of growth. In addition to laboratory tests, a cross-flow velocity calculation has also been made. From the tests of fluid, it has been found that most likely the damage was caused by the tube cross-flow velocity, the condition of the water as a cooling medium which is corrosive and erosion-corrosion impingement phenomenon and erosion-corrosion pitting.
|Keywords: Shell and tube cooler, Hydropower Plant|
|Full Text (.pdf) | 759 KB|
|Title: Corrosion Control by Benzyl Triethylammonium Chloride: Effects of Temperature and Its Concentration|
|Author(s): Mohd Nazri Idris, Abdul Razak Daud, Norinsan Kamil Othman, Azman Jalar|
|Pages: 47-51||Paper ID: 136603-9292-IJET-IJENS||Published: June, 2013|
Abstract: The effectiveness of quaternary ammonium compound of benzyl triethylammonium chloride (BTC) as an inhibitor for corrosion of carbon steel in 1.0 M HCl solution has been investigated by weight loss method. Surface morphology of the carbon steel samples was examined using a scanning electron microscope. The solution temperature and inhibitor concentration were varied. Inhibitor efficiency was found to increase with inhibitor concentration. The results revealed that the corrosion rate increases in the presence and absence of BTC as the temperature increased. The adsorption of inhibitor onto sample surface was found to follow Dubenin-Radushkevich adsorption isotherm. Thermodynamic parameters for the corrosion process such as activation energy Ea, activation enthalpy ΔH, and activation entropy ΔS were calculated. The Ea, ΔH, and ΔS obtained indicated that adsorption of the inhibitor was merely physisorption.
|Keywords: Adsorption isotherm, Benzyl triethyl ammonium chloride, Carbon steel, Corrosion inhibitor.|
|Full Text (.pdf) | 329 KB|
|Title: Improvement of Committee Machine Performance to Solve Multiple Response Optimization Problems|
|Author(s): Seyed Jafar Golestaneh, Napsiah Ismail, Say Hong Tang, Mohd Khairol Anuar M. Ariffin, Hassan Moslemi Naeini|
|Pages: 52-63||Paper ID: 138003-9595-IJET-IJENS||Published: June, 2013|
Abstract: Three phases are considered for multiple response optimization (MRO) problems. They are design of experiments, modeling and optimization. Committee machines (CM) as a set of some experts such as some artificial neural networks (ANNs) can be applied for modeling phase. Then, genetic algorithm (GA) determines the final solution with object maximizing the global desirability as optimization phase. That algorithm was implemented on five MRO case studies include target, minimizing and maximizing objects. Current article is a development of recent authors' work on application of CM in MRO problem solving. Initial approach in that work, includes a committee machine with four different ANNs. The CM weights are specified with GA which its fitness function was minimizing the overall RMSE for each response. In current work, a new approach was applies in finding the committee machine weights. The fitness function in this approach is made by minimizing the absolute error between CM responses and real data for each response, separately. A performance index is defined to evaluate different models performance. The results from five case studies show that there are noticeable decreasing in overall RMSE whereas there is a negligible decreasing in GD for new CM with respect to initial CM. this is due that less error is a confirmation of performance increasing for new committee machine.
|Keywords: Global desirability, Committee Machine, Multiple responses optimization, Genetic Algorithm.|
|Full Text (.pdf) | 715 KB|
|Title: FDTD Analysis of Differential Electromagnetic Energy Absorption by a Biological Body embedded in a Host Material inside a Shorted Waveguide Section|
|Author(s): Idris A. Ali|
|Pages: 64-69||Paper ID: 138703-2525-IJET-IJENS||Published: June, 2013|
Abstract: A waveguide irradiation system is a convenient way of investigating interaction of biological bodies or specimens inside their surrounding host materials, with microwave fields. Such a system can be used in a number of applications, such as irradiation of insects inside host bodies, investigation of tumor treatment inside healthy or infected tissues, and the like. This paper describes how finite difference time domain (FDTD) computational method can be used to determine specific absorption rate (SAR) and electric field strength in such cases, with specific example of red pam weevil inserted in a block sample of a tree trunk inside a shorted rectangular waveguide.
|Keywords: FDTD, Electromagnetic absorption, SAR, Red Palm weevil, biological body.|
|Full Text (.pdf) | 645 KB|
|Title: Non Destructive Prediction of pH in Mango Fruits cv. Gedong Gincu Using NIR Spectroscopy|
|Author(s): Yohanes Aris Purwanto, Putri Wulandari Zainal, Usman Ahmad, Sutrisno Mardjan, Yoshio Makino, Seiichi Oshita, Yoshinori Kawagoe, Shinichi Kuroki|
|Pages: 70-73||Paper ID: 138103-6767-IJET-IJENS||Published: June, 2013|
Abstract: Near infrared (NIR) spectroscopy techniques have shown promise as rapid and non-destructive tools to evaluate the various internal quality attributes of fruits. In mango fruits cv Gedong Gincu, acidity (pH) is one of the main quality attribute. Prediction of acidity in mango fruits is generaly carried out destructively. The objective of this study was to develop calibration model and prediction of pH in mango fruit cv. Gedong Gincu using NIR spectroscopy. The transmission spectra of mango fruits were obtained in the wavelength range from 1000 to 2400 nm. The prediction model was developed by partial least square (PLS) regression. The coefficient of corrrelation (r) of pH was 0.9042 and the standard error of prediction (SEP) was 0.12, respectively. It is concluded that by using the NIR measurement system, in the appropriate spectral range, it is possible to nondestructively predict the pH of mango fruit.
|Keywords: Non destructive prediction, pH, near infrared spectroscopy, mango fruits cv. Gedong Gincu.|
|Full Text (.pdf) | 520 KB|
|Title: Combined Shaped Microstrip Line and DGS Techniques for Compact Low Pass Filter Design|
|Author(s): Abdalla Abdulhadi Alsanousi Abdulhadi, Antumani Ashoka, Wilson Jeberson|
|Pages: 74-77||Paper ID: 131403-7575-IJET-IJENS||Published: June, 2013|
Abstract: A U-shaped defected ground structure (DGS) with shaped microstrip line is proposed for compact low pass filter (LPF) implementation. Inset feed and stub matching techniques are used to enhance the filter charactristics. The proposed filter is composed of double U-shaped DGS units at the ground plane and a shaped microstrip line on the top. This structure allows sharp cutoff frequency response and high harmonics suppression. Furthermore, it provides compact filter size without the need for cascading periodic DGS structures. The stop band attenuation is controlled by adjusting the depth of the inset feed and the length of the stub sections. It has a 3 dB cutoff frequency at 2.7 GHz and it is as small as 20 mm × 19 mm.
|Keywords: Defected ground structure (DGS), electromagnetic bandgap (EBG), U-shaped, flat pass band, low pass filter (LPF).|
|Full Text (.pdf) | 488 KB|
|Title: Stability of Cylindrical Oil Storage Tanks During an Earthquake|
|Author(s): Yaser Zare|
|Pages: 78-83||Paper ID: 134103-2525-IJET-IJENS||Published: June, 2013|
Abstract: Seismic stability of oil storage tanks is very important as these tanks are used extensively in different national industries such as refineries, power plants and fuel storage facilities. Today many of these tanks, designed and operated with past standards, have a long life, thus with the progress made in seismic designs, it is necessary to examine the tanks with the latest international standards. In the present study, the seismic behavior of different tanks in five types with height to radius ratios (0.78, 0.9, 1.0, 1.3 and 2.0) examined by ANSYS and some of their malfunction mechanisms were evaluated such as elephant-foot buckling, diamond buckling, roof damaging by fluctuating fluid, slide, overturning, uplifting floor, bed asymmetric subsidence. Several analyses including static, modal and linear spectral and nonlinear time-history analyses carried out on the oil storage tank and obtained the results. Site-specific spectrum with maximum acceleration of 0.3g as well as site compatible earthquake records are considered as input motions. Finally, it is found that if 18% of tank height is assumed to be empty, fluid turbulences by earthquake wouldn’t put the roof at any risk. Furthermore, for uncontrolled tanks with 1.5 height/radius ratio and over, overturning will happen.
|Keywords: Reinforcement, steel tanks, seismic vulnerability, elephant foot buckling, diamond buckling.|
|Full Text (.pdf) | 595 KB|