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ARPN Journal of Engineering and
Applied Sciences
February 2019 | Vol. 14 No.
3 |
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Title: |
Entire-spray mixing characteristics over time after the start of the
injection using an image-processing technique for high-speed captured
images of
CR-DI fuel sprays |
Author (s): |
Choong Hoon Lee |
Abstract: |
Diesel fuel sprays from a common rail injector were injected into a
pressurized constant-volume chamber. The environmental gas density in
the constant-volume chamber was 18 kg/m3, which is representative of the
density in a typical diesel engine when the fuel injection process
starts. Consecutive images of the diesel fuel sprays were captured with
a high-speed camera at a constant time interval. The spray dispersion
area with time after the start of the fuel injection was obtained. The
spray dispersion area increased linearly with time after the start of
the injection. The slope of the linear correlation line between the
spray dispersion area and time after the start of the injection was
steeper when the fuel injection pressure was higher. There was little
effect on the slope of the linear correlation line with a change of the
duration of the fuel injection time. The mixing characteristics of the
entire spray injected from the common rail diesel injector were studied
by analyzing the capture images. The mixing characteristics of all
sprays over time after the start of the injection process were
quantified by determining the pure-light-extinction intensity (PLEI) at
each pixel for all of the sprays. |
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Title: |
Biodiesel production from waste cooking oil with catalysts from
clamshell |
Author (s): |
Yoel Pasae, Justin Leste, Lyse Bulo, Titus Tandiseno and Karel
Tikupadang |
Abstract: |
This research was carried out to study the
effectiveness of clamshell as
catalyst in biodiesel process production, especially biodiesel from
waste cooking oil. Waste cooking oil was pre-treated to remove water and
others inert. The pre-treated process was used three methods namely
purification with noni, purification with husk charcoal, and
purification with wood charcoal. Clamshell was crushed into powder,
sieved to 200 mesh and calcined at three various temperature 700 oC, 750
oC and 800 oC. Purified waste cooking oil was used as raw material in
transesterification reaction to obtain biodiesel and gliserol. The ratio
of waste cooking oil to methanol and clamshell powder was 200 mL:600
mL:2 g. The results of the study show that pre-treatment processing of
waste cooking oil using noni fruit, husk charcoal or wood charcoal can
remove impurities in oil and reduce oil-free fatty acid content to meet
the standards to be used as raw material for the biodiesel industry. CaO
from clamshell is effective as a catalyst in the process of biodiesel
production. the characteristics of biodiesel from waste cooking oil
produced in this study are as follows; the acid number is in the
range0.51-0.56, mgKOH/gsample, saponification numbers in the range193-201
mgKOH/gsample, density 853-854 kg/m3, and the viscosity in the range
of2.77 to 2.80 cSt. all these characteristics fulfill the provisions
required by the Indonesian National Standard (SNI). |
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Title: |
Compatibility of shungisite microfillers with polycarboxylate admixtures
in cement compositions |
Author (s): |
Olga Smirnova |
Abstract: |
The problem of the development of new multi-component binders is
relevant in the present time. Ground rocks and by-products of the
industry can be used in multi-component binders for various
applications. Mineral additive based on shungite rocks is used for
protective concrete against ionizing radiation. Shungite rocks differ in
genesis, mineral composition as well as carbon and silica content. The
efficacy of aggregates based on shungite rocks and shungisite in cement
concrete as protective material against ionising radiation is known.
However, influence of shungisite microfillers on the properties of
cement compositions with polycarboxylate super plasticizers was not
investigated. Morphology, element analysis of shungisite particles as
well as compatibility of shungisite microfillers with polycarboxylate
superplasticizer in cement compositions have studied in the paper.
Shungisite microfillers were obtained under heating shungite rock at the
temperature of 1000°C and its subsequent grinding. It has stated that
the water demand of cement paste with normal consistency had increased
with the increase of the fineness of the shungisite microfiller. The
plasticizing effect of polycarboxylate-based superplasticizer has
depended on the composition of shungisite. The data of determining the
electrokinetic properties of the shungisite micro-particles have
confirmed this. Results can contribute to the rational use of shungisite
microfillers in cement composite to create effective protective
materials with shielding properties against electromagnetic radiation or
cement composites with electro-conductive properties. |
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Title: |
Real time detection and geolocalization of
regulatory traffic signs |
Author (s): |
Jose de Jesus Salgado Patron, Oscar Roa
Valbuena and Albeiro Cortes Cabezas |
Abstract: |
In
this paper, an application capable of detecting, recognizing and
geolocating real-time traffic regulatory signs is developed. OpenCV
library modules are used as the cascade classifier to detect objects and
the kNN machine learning algorithm (k-Nearest Neighbors or nearest
k-neighbors), for the recognition of the digits of the traffic signs.
The location of the signs is done by GPS. In this way, an application
performance of 92% is achieved. |
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Title: |
Application of Half-sweep SOR iteration with nonlocal arithmetic
discretization scheme for solving Burger’s equation |
Author (s): |
N. F. A. Zainal, J. Sulaiman and M. U. Alibubin |
Abstract: |
In this paper, the Burger’s equations have been approximated by using
the second-order finite difference scheme and the half-sweep nonlocal
arithmetic discretization scheme to construct the half-sweep generated
linear system. Then, we investigate the applicable formulation of
Half-sweep Successive Over Relaxation (HSSOR) iterative method for
solving this linear system. In order to verify the effectiveness of the
HSSOR iterative method, this paper also included the Full-sweep
Successive Over Relaxation (FSSOR) and Full-Sweep Gauss-Seidel (FSGS)
iterative methods. The performance analysis of these three proposed
iterative methods is illustrated by solving four proposed Burger’s
problems. The numerical results illustrate the great performance of the
HSSOR iterative method together with half-sweep nonlocal arithmetic
discretization scheme to solve the Burger’s equations in senses of
execution time and number of iterations. |
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Title: |
Hydrothermal synthesis of nano BST alloy
and studying the piezoelectric, optical properties of Poly(Vinylidenefluoride) (PVDF)/Ba0.6Sr0.4TiO3 (BST)
nanocomposites |
Author (s): |
Aws K. Mohammed, Farah T. M. Noori and Sabah A. Salman |
Abstract: |
Ceramic-polymer nanocomposites, consisting of Barium Strontium Titanate
(BST) as fillers and Poly(vinylidenefluoride) (PVDF) as matrix, have
been fabricated by using a solution casting method with (BST) filler
contents of (25–40) vol%. (BST) nanopowder was synthesized by
hydrothermal method. The dielectric and optical properties of (PVDF/BST)
nanocomposites have been investigated. The (XRD) results showed that the
(BST) nanopowder obtained by hydrothermal method with a perovskite
structure. The frequency dependency of dielectric constant and
dielectric losses of the (PVDF/BST) naocomposites with different volume
fractions of (BST) filler in frequency range (50Hz–5MHz) at room
temperature were studied. The dielectric constant of the (PVDF/BST)
nanocomposites increased with the increasing of (BST) filler. The
dielectric losses of the (PVDF/BST) nanocomposites increase with BST
filler increasing at the same frequency. The dielectric properties of (PVDF)
were improved by increasing (BST) filler. The optical properties were
studied from the absorbance spectrum, the absorbance of the (PVDF/BST)
nanocomposites increase with the increasing of (BST) filler content. The
optical energy gap for the direct allowed electronic transition of (PVDF/BST)
nanocomposite with different filler contents of (BST) decreases from
(3.7 eV) to (3.2 eV) with the increasing of the (BST) filler content.
The results of piezoelectric measurements showed that the resistance of
all the (PVDF/BST) nanocomposites decreases as the applied pressure
increases, the resistance of the (PVDF/Ba0.6Sr0.4TiO3) nanocomposite
increased with the increasing of (BST) filler content at the same
applied pressure. |
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Title: |
Numerical solution of ninth order boundary value problems by
Petrov-Galerkin method with quintic
B-splines as basis functions and sextic B-splines as weight functions |
Author (s): |
K. N. S. Kasi Viswanadham and S. V. Kiranmayi |
Abstract: |
In this paper a finite element method involving Petrov-Galerkin method
with quintic B-splines as basis functions and sextic B-splines as weight
functions has been developed to solve a general ninth order boundary
value problem with a particular case of boundary conditions. The basis
functions are redefined into a new set of basis functions which vanish
on the boundary where the Dirichlet, the Neumann, second order and third
order derivative type of boundary conditions are prescribed. The weight
functions are also redefined into a new set of weight functions which in
number match with the number of redefined basis functions. The proposed
method was applied to solve several examples of ninth order linear and
nonlinear boundary value problems. The obtained numerical results were
found to be in good agreement with the exact solutions available in the
literature. |
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Title: |
Researches and applications of Intelligent
Transportations Systems in
urban area: Systematic literature review |
Author (s): |
Youssef EL MOKADDEM and Fouad Jawab |
Abstract: |
The purpose of this paper is to systematically review evidence of
existing ITS research that could be effective in mitigating current
problems in City Logistics. We systematically searched the English and
French languages literature indexed in Scopus (2010 to July 2018),
including: Elsevier, ACM, Springer, and IEEE. We also added studies
identified by experts up to July 2018. The study selection was
descriptive and comparative studies and systematic reviews of
Intelligent Transportation Systems. Therefore, we independently
extracted information on ITS subsystem capabilities & development and
technologies used. 56 studies met the inclusion criteria, some were in
the research and development stage, while others have seen some measure
of application or deployment. Most studies addressed Advanced Traffic
Management Systems (ATMS), Advanced Public Transportation Systems (APTS)
and Advanced Traveller Information Systems (ATIS). Data on efficiency
measure, technologies used were mixed. Empirical cost data were limited.
This study has a number of implications. Practitioners and researchers
will gain a greater understanding of how ITS are carried out in
developed countries and the type of challenges that have been addressed.
Furthermore, the results provide insights about the research path,
current technologies and future research directions in the field of ITS. |
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Title: |
Super wide band circular shaped antenna with a slit on the trapezoidal
ground plane |
Author (s): |
Pradeep Vinaik Kodavanti, P. V. Y. Jayasree and B. Prabhakara Rao |
Abstract: |
In this paper, a microstrip fed circular monopole antenna with a
trapezoid shaped ground plane is designed and fabricated for super wide
band applications. In order to achieve ratio bandwidth greater than
10:1, a semi elliptical slit is introduced on the ground plane, along
with the difference in length of microstrip line feed and length of
ground plane. The measured reflection coefficient, VSWR, radiation
pattern and peak gain are presented to validate the performance of
antenna. |
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Title: |
How the evaluation of the Mean down time by the normal distribution
allows us to trace a roadmap of continuous improvement |
Author (s): |
Hamza Salhi, Aziz Soulhi and Rabiae Saidi |
Abstract: |
The
goal of this article is to establish, in order of priority, the choice
of the workshop to be launched in a process of continuous improvement;
based on a statistical study that will demonstrate the utility of
applying the normal law on the Mean down Time (MDT) as an indicator of
Lean maintenance. According to the distribution given by the statistical
study of the latter, we will be apt to prioritize the starting of a
workshop in particular among others (skills Development, SMED, VSM ...). |
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Title: |
Magnetostrictive smart materials review for morphing aircraft |
Author (s): |
Musavir Bashir, Samuel Merryisha, Parvathy Rajendran and Mohd.
Shukur Zainol Abidin |
Abstract: |
The applications of magnetostrictive materials can be found in various
disciplines. Due to their excellent actuation performance
characteristics, magnetostrictive materials are employed as smart
actuators in aerospace applications. As the technology of adaptive
structures is favoring the use of smart actuators and sensors,
magnetostrictive smart materials have justified their employment in
morphing applications. The morphing aircraft technology presents new
challenges in terms of actuation characteristics; these material
actuators provide higher frequency and higher actuation efficiency.
Also, the magnetostrictive materials can provide mechanisms both for
actuation and sensing due to their property of bidirectional energy
exchange between magnetic and elastic states. This paper presents an
overview of magnetostrictive materials, their characteristic features
and the applications with the aim to inspire morphing structures in
aircraft. The challenges and trends in the applications of
magnetostrictive materials have also been discussed. |
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Title: |
Ecological-energy directions for improving multiple sprinkling machines |
Author (s): |
Anatoly Ivanovich Ryazantsev, Gennagy Vladimirovich Ol’garenko, Ivan
Alekseevich Uspensky, Aleksey Olegovich Antipov, Georgy Konstantinovich
Rembalovich, Mikhail Yur’evich Kostenko, Valentin Alekseevich Makarov,
Boris Aleksandrovich Nefedov, Evgeny Pavlovich Borovoy, Askar
Dzhangirogly Akhmedov and Elena Sergeevna Vorontsova |
Abstract: |
The article is devoted to the problem of water quality around irrigated
soils. It was discovered that flushing of the fertile layer occurs on
terrains near protected watersheds because of destroying irrigation
procedures. The modernization of irrigation machines is suggested as a
solution of the above-mentioned problem. The technological features of
circle sprinkling machines (SM) in the conditions of complicated soil
relief are defined by their supporting, tow-grip crossing capacity and
slipping of carts on the slope. The operating results are given
according to evaluation of SM work in difficult conditions with the
picture of their changes in the diagram dependences. The above-mentioned
devices help to create environmentally friendly and energy-saving
solutions to enhance reliability of SM while watering sloping lands. The
scientific conception as well as methods of searching for means and
techniques of providing SM highly efficient work on complicated soil
relief that stipulate its safe and qualitative maintenance together with
reducing power and water consumption and costs for building irrigation
systems are defined. The practical value of the work consists in the
ability to use the investigation results for developing and creating SM
modifications for complicated soil relief, for engineering by their
means irrigation nets that altogether determine efficient usage of
machines while reducing power and water consumption and providing soil
friendly technologies of watering. |
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Title: |
Modeling and multi-agent simulation of CO2 management in an urban center |
Author (s): |
Harouna Dan Djari and Harouna Naroua |
Abstract: |
In this article, a multi-agent based simulator has been designed for the
predictive simulation of carbone dioxide (CO2) which is one of the
principal greenhouse gases. The investigations have been conducted on
the emissions and absorptions of CO2, from the main sources at the level
of an urban center for sustainable development. All emitting and
absorbing objects are considered as agents which are communicating with
each other through messages. The designed architecture has been
implemented in order to simulate the quantitative evolution of the
concerned gas on different emission and absorption configurations. The
multi-agent architecture presented is composed of agents from different
horizons. The behavior of each agent depends on its mode of use or
existence. |
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Title: |
E-OTHELLO: The development of an electronic-hardware version of
traditional Othello board game |
Author (s): |
Izzat Arif Rozani, Amar Faiz Zainal Abidin, Mohd. Safirin Karis, Muhammad
Naim Mohd. Nizam, Arman Hadi Azahar, Mohammad Haniff Harun, Zakiah Mohd.
Yusoff, Khairul Kamaruddin Hassan and
Badril Nor Shah |
Abstract: |
Othello is a traditional game that can be trace back to year 1830s where
the objective of the game is to have own pieces occupied the board. The
board game has been declining rapidly as gaming technology getting more
advances. This is because video games are preferred by the Gen-Z because
it is more interactive. There are many electronic-software versions of
this board game but the game popularity is still declining as the
electronic-software version is not interactive and just a conversion of
the board game. The objective of the development of electronic-hardware
based of this board game is to give a twist of the old board game in
which the user can have the feeling of playing a hardware board game and
yet experienced the interactive of an electronic version (such as
playing on smart phone app). The proposed schematic and flowchart are
explained concisely. The simulation and actual results are presented and
the finding shows that the E-OTHELLO performs as expected. |
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Title: |
Two layers cloud radiative forcing model |
Author (s): |
Ronnachai Nanthochot, Dusadee Sukawat and Warisa Yomsatieankul |
Abstract: |
The cloud radiative forcing (CRF) plays an important role in the climate
system for physical, dynamical, chemical and biological processes. The
CRF value effects the overall and the distribution of energy between the
atmosphere and the surface. In this study, the CRF value is analyzed
from one-layer to consider in two-layer cloud by adding the cloud
between the top of atmosphere (TOA) and the cloud at one-layer. There
are three experiment cases of long wave, shortwave and net two-layer
cloud radiative forcing. The results show that the CRF value depends on
cloud optical depth and cloud top altitude of each layer in case of
long wave. The CRF value depends on only cloud optical depth of each
layer on a case of shortwave. In net CRF, the CRF value depends on the
cloud optical depth and cloud top altitude of each layer. The CRF value
depends on the low-cloud more than high-cloud. For all cases, the
results can be concluded that the CRF values of two-layers CRF model
give the similar results compared with the radiative transfer model.
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Title: |
Change of experimental Young’s modulus
with increasing temperature for an
ABS material subjected to tensile test |
Author (s): |
A. En-Naji, N. Mouhib, M. Lahlou, H. Farid and M. El Ghorba |
Abstract: |
This article presents the decrease of Young's modulus as a function of
increasing temperature in two main zones: the industrial zone of which
the temperature is below the glass temperature Tg = 110 ° C. and the
thermoforming zone from which the temperature is above the same glass
temperature. In the industrial zone, an experimental model namely static
damage made it possible to distinguish three stages of damage.
Therefore, be able to intervene in time for predictive maintenance. This
study also includes a comparison between the static damage and damage by
unified theory (theoretical). The comparison shows that the experimental
damage is considered to be the most critical compared to theoretical. In
the thermoforming zone, we adopted the same methods to follow the
process of flow as a function of the temperature increase, based on the
variation of Young's modulus. Likewise, we compared theoretical and
experimental values which show that, unlike the previous zone,
experimental damage in this area is less dangerous than the theoretical
one for high loading levels. |
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Title: |
An innovative method to forecasting the load with the help of
Multilayer Perceptron Neural Network |
Author (s): |
Anamika Singh and Manish Kumar Srivastava |
Abstract: |
Load forecasting have been a significant area of research as well as it
has been a critical problem in planning and operation of electric power
generation. In order to predict electrical load, the technique load
forecasting is immensely used in global world. In addition, for power
system planning the integration of short term load forecasting has been
significant. Based on electric generating company, it is significant for
them to analyze the market load demand in order to produce accurate
power specifically in the deregulated market. This research paper have
used half-hourly load data that have been gathered for short-term load
forecasting in order to develop an accurate model for New South Wales.
The use of MATLAB tool box with the integration of multilayer feed
forward neural network has been used. The training has been provided
with the use of Levenberg-Marquardt back propagation in order to
evaluate the result as well as performance of the model during testing,
training and validation. The effectiveness of Mean Absolute Percentage
Error has been also considered in the paper. The result illustrated that
this method is highly accurate and simple with minimum error as well as
can be used for short term load forecasting. |
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Title: |
Fabrication of micro features on Quartz glass using developed WECDM
setup |
Author (s): |
Jasmeet Singh, Rahul Vaishya and Manoj Kumar |
Abstract: |
In today’s high-tech demand-oriented society everything is getting
faster and smaller. Proper selection of materials and their
miniaturization has become very challenging. Composites, ceramics, glass
and smart materials are becoming more and more popular because of their
superiority over conventional materials but their miniaturization for
particular applications is difficult. For a given study, Wire Electrical
chemical discharge machining (WECDM) setup was developed to machine
Quartz glass material. The experiments were performed for Material
removal rate (MRR) and Width of Cut (WOC) for different governing input
parameters using Taguchi design of experimentations. Optical microscope
(OM) shows the fine cut 0.120mm width for 10mm depth. The results show
the need for the secondary process to improve topography of machined
surface and dependency of input parameters on the machining accuracy,
aspect ratio, and surface finish. |
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Title: |
Analysis of the methods of calculating the main roof-caving increment in
mining shallow coal seams with long breaking faces |
Author (s): |
Oleg Ivanovich Kazanin, Andrey Alexandrovich Sidorenko and Yury
Georgiyevich Sirenko |
Abstract: |
The study was aimed at choosing and substantiating efficient methods of
calculating main roof-caving increments during mining of shallow coal
seams with long breaking faces. For the conditions of the Vorkuta coal
deposit in the Pechora coal basin, Russia, actual main roof-caving
increments and calculated values obtained with the use of the methods
used in the mines have been comparatively analyzed. The applied methods
of calculating roof-caving increments have been analyzed, and the
reasons for the discrepancy between the actual and calculated values of
the roof-caving increments have been shown. The significant influence of
breaking face advancing rate on the roof-caving increment has been
shown. Recommendations have been given for the use of this method, with
regard to the breaking face advancing rate, and the areas of further
research have been determined. |
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Title: |
Performing laboratory study on the impact of change in the angle of the
fibre-reinforced plastic (FRP) screw fibers on the compressive behavior
of the enclosed concrete cylinders |
Author (s): |
Azhar Ayad Jaafar, Mohammad Reza Tavakolizadeh, Douread Raheem Hassen,
Thaer Matlab Mezher and Alyaa Abdulrazzaq Azeez |
Abstract: |
The applications of FRP-based polymers for improving concrete structures
have been significantly growing during the recent years. The main cause
for the aforesaid extension deals with the requirement for extending the
life of the infrastructure and improving the infrastructure in all parts
of the world. High hardness, low weight, corrosion resistance, easy and
quick installation, greater flexibility in design, lower total cost
(including time, materials and performance) than steel sheets are the
important features of FRP. The efficiency of the FRP enclosure function
deals with the compressive strength of the concrete feature, the
material and thickness of the pin and the angle or direction of the
fiber. The axial behavior and bearing capacity of the columns are a
function of the stress level of the aggregate conglomeration. The type
of fiber, the number of ply layers, the fiber positioning angle and the
compressive strength of the concrete are important in the column
behavior. The parameters investigated and studied in the present
research were investigated the impact of type of fibers including GFRP
and CFRP, number of polychromatic layers, pinch angle, concrete
compression strength of samples, including 3 resistances of 20, 35, 50
MPa, as well as the adhesion pattern of fibers. Considering the
aforesaid cause and objective, 23 samples of unconventional concrete
cylinders with a diameter of 200 mm and a height of 600 mm including 10
samples with a zero-degree fiber orientation, 10 samples with different
fiber positioning angles and 3 control samples were tested for
comparison. Following the rounded specimens’ processing, they were
subjected to a pure axial pressure test at a fixed rate of displacement
through a hydraulic jack. The measured values in this work included
axial stress, axial strain and lateral strain. Based on the results, the
number of layers and its type bears a great impact on sample behavior.
Based on the results, the amount of resistance, formability and absorbed
energy of the samples increase with the polishing of the column. Plus
the aforesaid, raising the angle of the fiber position relative to the
horizon, results in decrease in the amount of resistance, absorbed
energy, and formability. |
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Title: |
Development and analyzation of linear positioning table for drilling
machine |
Author (s): |
N. Ab Wahab, Siti Haidar Atiah Binti Mohd. Azmi, Abd Khahar
Bin Nordin,
D. A. Hadi and Siti Halma binti Johari |
Abstract: |
Drilling is a continuous machining process. Drilling is a cutting
process that uses a drill bit to cut a hole of circular cross-section in
solid materials. This forces the cutting edge against the work piece,
cutting off chips (swarf) from the hole as it is drilled. Various
cutting tools are available for drilling, but the most common is the
twist drill. Wide varieties of drill processes are available to serve
different purposes such as drilling, reaming, boring, counter boring,
counter sinking, spot facing, trepanning and under cutting. The
objective of this project is to optimize and analyze the linear
positioning table for drilling machine to make it more effective and
perfect to function. Furthermore, the methods that can be used are by
installing the screw on the based part of the linear positioning table
for drilling machine. For this linear positioning table easy to use, the
scale reading will be design on it so that operator will easily mark the
desired measurement to be drill. A simple and safe design is proposed to
optimize and analyze this project which is expected to function
efficiently. In conclusion, this linear positioning table will be able
to ease the operator work which the operator only needs to clamp once
for the entire drilling process. |
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Title: |
Analysis study model of harmonic filter of power system for FL-5 LOAD ON
PL-LB / 2 using ETAP |
Author (s): |
Erwin Dermawan, Deni Almanda, Ery Diniardi, Syawaluddin and Anwar Ilmar
Ramadhan |
Abstract: |
Current harmonics and harmonic stresses are one of the common problems
that occur in a power system that has a constituent component in the
form of a non-linear load. Current harmonics and harmonic stresses can
affect the stability of the power system itself and provide a bad impact
on other electrical components, therefore a step that needs to be done
to minimize the adverse effects of the case is one of them is by using a
passive filter. In this study, the design of the High Pass Damped Filter
model will be carried out using reference from the data obtained from
measurements and simulations, so that it can be seen how much influence
the high-pass damped filter can reduce the current and voltage harmonics
contained in the system with the help of ETAP software to analyze filter
design for FL-5 load on PL-LB / 2. |
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Title: |
Power generation using diaphragm movement for pacemaker |
Author (s): |
H. Ajay, Aliasgar Zakir, Abhishek Patil and Deepa Madathil |
Abstract: |
Nowadays, battery life plays an important role in the productivity of a
pacemaker. Whatever might be the case because soon after, a surgery
needs to be carried out to replace those batteries. An alternative
source for the power requirement for the implant has been discussed here
wherein the power is generated using just the body movements,
specifically area efficient diaphragm in this case. The voltage
requirement for a pacemaker battery is around 2-3V hence by the use of piezo films made of PVDF, this range of power is obtained. The film
array is placed on the thoracic region where normal breathing creates a
scenario similar to that of the diaphragm. |
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Title: |
Design and implementation of tracking personnel within building
featuring FPGA and RFID |
Author (s): |
Muataz H. Salih, Lim H. Teng and Saif N. Ismail |
Abstract: |
Nowadays, personnel tracking become a significant topic in terms of
security, confinement, achievement and permission purposes. There is
Global Positioning System which is popular and available for outdoor
personnel tracking however it is restricted for indoor tracking.
Currently, indoor tracking system only has the ability to track the
location of personnel but not their direction of movement. When it comes
to practical, the feature of tracking direction of movement can become
one of the important features to get more accurate localization
information. Besides, latency on getting location information of a
person by asking around the people is not realistic as someone might
lost the information to find their targeted person exact location. Thus,
an indoor personnel tracking system is designed and implemented to track
the not only the location but also the direction of movement and able to
get the latest information through mobile application. The potentials of
Field Programmable Gate Array (FPGA) and concept of Internet of Things (IoT)
are applied into this system in order to improve the system performance
by increasing the system throughput and decreasing the system cost. This
system is implemented on FPGA DE1-SoC board by integrating with WiFi
modules and Radio-frequency Identification (RFID) system. The system has
the ability to add new client data onto FPGA memory for next time
tracking purpose. |
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Title: |
Effect of elevated temperature on degradation
behavior of reactive
powder concrete made
with rubber tire wastes as an aggregate replacement |
Author (s): |
Tholfekar H. Hussain, Mohammed S. Nasr and Hassein J. Salman |
Abstract: |
The recycling of the solid wastes (such as rubber tire wastes) is one of
the major problems that represent a global challenge with the large
population growth due to their environmental impact. Reactive powder
concrete (RPC) has gained worldwide attention due to its superior
strength, notable deformation, and excellent durability. Due to the low
permeability of reactive powder concrete, at elevated temperature, free
water is prevented from escaping, causing a high internal pressure and
leading to spalling. Thus, this study was executed to explore the
behavior of reactive powder concrete made with rubber tire wastes (RW)
as a partial replacement of fine aggregate (by volume) under elevated
temperature. In addition to the control, nine RPC mixes divided into
three groups were cast. The first group included replacing of aggregate
with 15%, 25% and 50% of RW. Steel fibres in proportions 0.5%, 1% and 2%
by weight of cement were used in the second group. In the third group,
polypropylene fibres in the percentages 0.5%, 0.75% and 1% by volume of
concrete were utilized. The fine aggregate for each mix in the second
and third groups was substituted with 15% of RW. After 28 days of
curing, the hardened specimens were air-dried and placed in a controlled
oven. The considered temperature rates were 25, 200, 300 and 400 °C. The
specimens remained at the target temperature for 2 hours then their
behavior was observed by compressive strength, weight loss, ultrasonic
pulse velocity and visual inspection tests. Results showed that RW
reduced the compressive strength of RPC compared to plain specimens
(without RW) at ambient temperature. At elevated temperature, it was
revealed that all specimens were broken at 400 °C except for 50%
substitution of rubber tire wastes which had noticeable residual
strength. |
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