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ARPN Journal of Engineering and
Applied Sciences August 2018 | Vol. 13 No. 16 |
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Title: |
Strength and durability studies on
concrete made with manufactured sand |
Author (s): |
S. S. Saravanan and P. Jagadeesh |
Abstract: |
Use
of manufactured sand in concrete has been an area of interest for many
researchers across the globe. The available limited natural sand is
unable to meet the growing demand of fine aggregate for the needs of
construction. It is proposed to compare the physical properties of
natural river sand with manufactured sand (M-sand). The current study
was conducted on the mixes M30, M40 and M50. The Modulus of Elasticity
(MOE) was evaluated by changing the relative proportion of M-sand from 0
to 100%. Additionally, impact resistance tests and sorptivity tests were
also conducted on the said mixes for the optimum proportion of the
manufactured sand. Furthermore, the microscopic studies such as Scanning
Electron Microscopy (SEM) and Electron Dispersive Spectrometry (EDS)
were also conducted. Improvement in MOE and resistance to impact loading
was observed with increase in grade of the mix. However, reduction in
sorptivity was observed with increase in grade of concrete and the
presence of M-sand. Moreover, a comparison was made between the
experimental MOE values and those obtained from IS code. Microscopic
studies revealed the presence of angular and rough surface of M-sand as
compared to natural sand and it was fund to be the reason behind
improvement in MOE and impact resistance and reduction in sorptivity.
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Title: |
Design and implementation of a dryer to
control and monitor the dehydration process of tomatoes |
Author (s): |
Johan Julian Molina Mosquera, Jose Salgado Patron and Diego F. Sendoya-Losada |
Abstract: |
This
article presents the design and implementation of a prototype dryer.
This device will be used for the control and monitoring of the process
of dehydration of tomatoes in rural areas of the municipality of Neiva.
For this, sensors for the acquisition and measurement of variables such
as temperature, relative humidity and weight based on the platform of
free hardware-Arduino, are used. The data recorded during the monitoring
are stored in a micro SD memory of 4GB and in addition a database is
created. An application that allows the user to monitor the drying
process of the tomato in real time through the software Visual Studio
Ultimate 2013 and a Web page that allows remote monitoring are also
presented. The sensor data is sent via XBee devices to a computer for
storage and viewing. The prototype has an alert system that activates
when the levels measured by the sensors are not adequate. This ensures a
good drying process for tomatoes. Finally, the internal ventilation of
the dryer and the covering system once the dehydration process has
finished is done through an automated door. |
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Title: |
Optimized parachute recovery systems for
remote piloted aerial systems (RPAS) |
Author (s): |
Luca Piancastelli, Raimondo Alberto
Bernabeo, Marco Cremonini, Stefano Cassani, Federico Calzini and Eugenio
Pezzuti |
Abstract: |
The
new RPAS (Remotely Piloted Aerial Systems) are mostly video cameras with
wings whose ownership isn't enshrined in any Constitution. Rulers are
rushing to do regulate the lack of safety and accountability for RPAS.
In Italy ENAC (aviation Authority) legislated against random acts of
stupidity and probable failures. For the current year of 2015, there is
a forecast to sell $1bn worth of RPAS product. For these reasons the
installation of RPS (Recovery Parachute System) on commercial RPAS is
particularly interesting. A few RPS manufacturers have manufactured
specific RPS systems for "drones" both rotary and fixed wing. However,
these systems are designed with the same criteria of manned aerial
vehicle. This paper demonstrates that the design criteria of RPAS are
sensibly different from other applications. In particular the rate of
descent during recovery should be reduced from 6m/s to 2m/s. This fact
poses new challenges in parachute design. In fact RPS mass depends on
parachute diameter that increases with low descent rates. This paper
demonstrates that it is possible to design effectively RPS for RPAS up
to 80kg by using nonwoven fabric in parachutes. In this way the RPS mass
is a small fraction of the RPAS one. Deployment systems are not a
problem for RPAS since masses are extremely small and the power
necessity are accordingly limited. |
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Title: |
Flexural behavior of spliced ultra high
strength concrete beams using finite element analysis |
Author (s): |
Ahlam Sader Mohammad |
Abstract: |
This
paper is an analytical study of spliced ultra high strength concrete (UHSC)
beams using finite element analysis to predict their load-deflection
response. Two UHSC beams model was generated and analyzed by ANSYS15 and
the results compared with the experimental results as a verification
process. The resulted load deflection curve from the analytical work
compared well to experimental results. The average difference between
the two works was 98% in failure load results, and it was 85% in
deflection results. A parametric study was then performed by modeling
and analyzing another three non spliced and six spliced UHSC beams with
three different steel fiber volumetric ratios (1.5% 1%, and 0.5%) and
two different lap splice lengths (10 and 15 times diameter of bar). The
obtained analytical results indicated that the volumetric steel fiber
ratio has significant effect on the adequate lap splice length in UHSC
beams. |
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Title: |
Multi-objective optimization of the
cooling system of a diesel helicopter |
Author (s): |
Luca Piancastelli, Stefano Cassani,
Eugenio Pezzuti and Lorenzo Pompei |
Abstract: |
CRDID
(Common Rail Diesel Engine) main advantage is the extremely high
efficiency (up to 52%), the enormous amount of hours run and the flight
readiness. Moreover, diesel fuel is safer than jet fuel and it is
available everywhere. Therefore, refueling flights to airports or
dedicated supply lines can be avoided. However, diesel engines are
generally heavier than turboshafts and require an additional cooling
system. This requirement is particularly stringent during near
stationary operations of the helicopter. In fact, if fans are used for
the cooling system, the available power is reduced with an increased
penalty weight for the installation. For this reason the ejector exhaust
system can be successfully used in CRDID powered helicopters. A
feasibility study of the cooling system for a CRDID (Common Rail Diesel
Engine) on a common light helicopter (Eurocopter EC 120-class) is
introduced. Optimization of this system is performed. The total mass
available for the CRDID is evaluated starting from fuel consumption and
helicopter data. A derivative of an automotive engine is proposed for
the turboshaft replacement. The result is that the ejector exhaust
(augmenter) is extremely effective. Solid Works Flow Simulation confirms
the ejector choice and the design criteria. |
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Title: |
Triple-Axis Tracking Control Algorithm for
maximizing solar energy harvesting on a moving platform |
Author (s): |
Anak Agung Adi Esa Putra Kesava and Wansu
Lim |
Abstract: |
Triple-Axis Tracking Control Algorithm is an algorithm on tracking that
used to increase the performance of solar cell. The tracker will
increase on three basic needs on electricity such as current, voltage,
and power. It also works in moving platform such as mobile car. The
implantation keys are to make maximize harvesting energy on solar cell.
In the paper delivered the fundamental difference between static solar
cell and dynamic triple-axis solar tracker. The end goal of the research
is to find the right algorithm on triple-axis to maximize the output
power of solar panel in moving platform as the new future smart grid. |
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Title: |
Transmission lines fault detection using
Discrete Wavelet Transform and artificial neural network algorithm |
Author (s): |
M. Nithyavelam and Joseph Henry |
Abstract: |
This
paper proposes a novel approach for fault discovery of three-phase
transmission line, which is primarily based upon the Discrete Wavelet
Transformation (DFT) and Back propagation neural network algorithm.
Three phase currents of most effective one end are measured, and
discrete features are extracted using Discrete Wavelet Transform. Those
features are then used as inputs to the Back propagation neural network
algorithm. The Training data set for Back propagation neural network
Algorithm is obtained by way of simulating the ten extraordinary kinds
of faults the use of diverse values of fault inception angles and fault
resistances, so that the actual consequences may be received. The
proposed Back propagation neural network algorithm employs twenty inputs
and best one output for classifying the faults. The distinctiveness of
the proposed approach is that all the features, data used in developing
the Algorithm are normalized, so that the method may be used for any
system with none significant changes. The simulation of the Three-phase
transmission line network and discrete Wavelet Transformation analysis
are achieved inside the toolboxes of MATLAB®, and Back propagation
neural network Algorithm codes also are written in MATLAB®. |
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Title: |
Segmentation of multi-temporal images
using gaussian mixture model (GMM) |
Author (s): |
P. Radhika Priyanka, N. Anusha and P. Sai
Harini |
Abstract: |
This
paper proposes a new segmentation technique called GMM. In order to
identify the damaged buildings LANDSAT-8 multi-temporal images are taken
i.e., before and after earthquake. Extraction of features is an
important technique which maximizes the class similarities and minimizes
the class dissimilarities. A new technique is proposed for identifying
the changes in images by processing grey scale images and implementing
Fast Discrete Curvelet Transform (FDCT). The main motive of implementing
FDCT is to approximate properties and due the high directional
sensitivity of this transform. For extracting features from the image,
segmentation plays a key role. The accuracy results are compared with
Watershed, Fuzzy, Ostu segmentation techniques. The results show that
the proposed technique gives better accuracy compared to the existing
techniques. |
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Title: |
Strategy improvement algorithm for
singularly perturbed discounted Markov decision processes |
Author (s): |
Abdesselam Elbahja and Aziz Soulhi |
Abstract: |
In
this paper, we consider a perturbed Markov decision process with the
discounted reward criterion. The transition probabilities and discounted
factor are perturbed slightly. We assume that the underlying process is
completely decomposable in finite number of separate irreducible
processes. We introduce the limit Markov control problem which is the
optimization problem that should be solved in case of singular
perturbations. In order to solve the limit Markov control problem, we
propose an aggregation-disaggregation policy improvement algorithm which
converges in a finite number of iterations to an optimal deterministic
strategy. |
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Title: |
The influence of material strength on
excavator track shoe using Abrasive Wear Testing with Ogoshi High Speed
Universal Wear Testing method |
Author (s): |
Moch. Fihki Fachrizal and Sumar Hadi Suryo |
Abstract: |
Excavator is heavy equipment used in construction, agriculture and
forestry industries. Excavator has a primary function for digging and
loading some materials, for instance rocky soil and others. Excavator
has 3 sections consisting of attachment, base frame, and undercarriage.
One section of undercarriage excavator that mostly needs routine
maintenance is track shoe. Track shoe is the crawler or the outer wheel
of excavator that serves as the motor of excavator. This section is
always in direct contact with the soil which leads to wear. This
research discussed the comparison of track shoe material before heat
treatment and after heat treatment using quenching with oil media. The
material was AISI 1526. The analysis conducted was micrographic test in
which non-heat-treatment material went to ferrite and pearlite phases,
while heat-treatment material turned into martensite phase. Hardness
testing on non-heat-treatment material was 41 HRC, while heat-treatment
material was 45.3 HRC. Wear testing on non-heat-treatment material was
1.28mm3/day, while heat-treatment material was 1.12mm3/day.
Non-heat-treatment material had wear rate value of 0.51 mm/yr and
heat-treatment material had 0.34 mm/yr. Microstructure testing of the
sample was conducted by using optical microscope, hardness testing of
the sample used Rockwell Hardness Tester, wear testing used Ogoshi High
Speed Universal Wear Method, and corrosion testing used potentiodynamic
polarization method. From the analysis results, hardness value was
inversely proportional to wear and corrosion values; the harder the
material, the smaller the wear rate. |
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Title: |
Development, optimization and analysis of
square patch antenna with “L” shaped slot |
Author (s): |
Ahmad Fariz Hasan, Aziean Mohd. Azize, Amar
Faiz Zainal Abidin, Norain Idris, Nurul Ashikin Rais and Mohd. Fikri Bin
Che Husin |
Abstract: |
Microstrip patch antennas have been widely used in a various useful
applications, due to their low weight and low profile, compatibility,
easy and cheap realization. A low profile patch antenna for WLAN
application is proposed in this paper. A slot technique for microstrip
antenna is proposed for better performance which is aperture slot on the
design microstrip patch rectangular antenna. The study in this research
is based on the performance of the aperture slot microstrip antenna, in
terms of return loss, bandwidth and radiation pattern, by varying the
aperture shapes. In this project, aperture shape is focused on "L" shape
and is carried out from the design until simulation using Computer
Simulation Tool (CST). The "L" slot aperture is designed in the middle
of rectangular patch antenna. The feed line design in this project will
be based on quarter wave impedance matching in order to match the 50 ? microstrip line with load impedance. For the slot design, the length and
its width will be vary to get the best response. The slotted micro strip
antenna in this comparison has almost the same design parameters as the
one without the slot, with the obvious difference being that slotted
antenna has an "L" shaped slot in the middle. This small difference,
however, yields to a much higher return loss and increase in bandwidth.
Moreover, even these results can be further enhanced by optimizing the
size, shape and position of the slot. The rectangular patch antenna is
design such that it works in the Wireless Local Area Network (WLAN)
specification. The resonated return loss for simulated rectangular
aperture slot is -29.49 dB while for the antenna without slot technique
gives -17.63 dB. Radiation patterns of all antennas are simulated and
the performance is acceptable. They produced E-plane Half Power Beam
Width (HPBW) of 80º and H-plane HPBW of 110º. |
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Title: |
Dual frequencies band and enhanced
wideband effect of dual layer microstrip patch antenna |
Author (s): |
Nornikman Hassan, Badrul Hisham Ahmad,
Mohamad Zoinol Abidin Abd Aziz, Aziean Mohd. Azize and Muhammad Syafiq
Noor Azizi |
Abstract: |
In
current telecommunication situation, the antenna with wideband or
multi-band effect are important for cater many users’ demands. In this
research, the works explores the effect of additional rectangular shaped
on the above of the dual layer microstrip patch antenna. Firstly, a
basic microstrip patch antenna with a single layer of substrate (Design
A) had been simulated using the CST Microwave Studio software. After
that, the addition of another layer of substrate with parasitic element
is shown as Design B. This proposed microstrip patch antenna resonates
at two different frequencies of 2.396 GHz and at 2.543 GHz of frequency
with - 36.8 dB and - 35.644 dB of return loss, respectively. The gain
performance for both resonant frequencies at 2.396 GHz and at 2.543 is
5.035 dB and 4.814 dB, respectively. The bandwidth of the Design B
antenna is 0.097 GHz (2.354 GHz - 2.451 GHz), had been increase compare
with Design A performance of 0.039 GHz (2.380 GHz - 2.419 GHz). The
second resonant frequency for Design B is only 0.028 GHz. (2.526 GHz -
2.554 GHz). |
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Title: |
Evolution of shock tower design using
reverse engineering technology |
Author (s): |
Rajesh L. and Krishnamoorthy A. |
Abstract: |
Shock
tower is an important automotive suspension components to absorb the
shock loading condition by withstand its structure between the strut
bars, where the spring and shock absorber are combined in one suspension
unit which also replaces the upper control arm, the entire vertical
suspension load is transmitted to the top of the vehicle's strut tower,
where the spring and shock absorber may share the load separately.
Therefore, in industries the Finite element analysis of shock tower
components are carried by several road load condition to obtain better
result in Durability Fatigue analysis. So the principle of the project
is evolving shock tower design using the reverse engineering processes.
This evolution of design will provide comparatively better result
matches with actual condition. The processes involve in project are
transformation of fine mesh from Standard Tessellation Language (STL)
file which is Scanned from the competitor model and need to pass away
the static analysis for given yield condition of the material and to
carry the fatigue test for several load condition to obtain better
quality than the scanned model. Moreover, the Main objective of the
project is to evolve a design without any specific consideration and
standard as it is going to evolve from reverse engineering based object
so it must be satisfy the actual automotive consideration. |
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Title: |
Image segmentation using To Zero method and
To Zero Inverse methods |
Author (s): |
N. Anusha, K. Bhavana Sai and K. Srujana |
Abstract: |
Now-a-days segmentation of images has become a challenging task. In this
paper, To Zero method and To Zero inverse methods are used for segmenting
optical images which gives better results compared to existing methods.
Edge detection is done by using Ratio of Averages (ROA), Laplacian
method, Sobel filter and canny filter. Edge information is used to
estimate the threshold values required for image segmentation. Image
segmentation is done by using multilevel thresholding techniques which
consists of Truncate, To Zero and To Zero Inverse techniques to get a
better output and to overcome the limitations present in singe level
thresholding. The input data is acquired by the Pleiades sensor from the
Paris region in 2017. Segmenting input images using the proposed method
was very satisfactory and the obtained results are very promising. |
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Title: |
A novel and efficient Mobile Cloud Service
for searching encrypted data |
Author (s): |
K. Aravind, J. Granty Regina Elwin, T.
Sujatha and S. Balakrishnan |
Abstract: |
Document storage in the cloud framework is quickly picking up ubiquity
all through the world. Nonetheless, it postures dangers to customers
unless the information is scrambled for security. Encrypted data ought
to be viably searchable and retrievable with no protection spills,
especially for the versatile customer. Albeit late research has settled
numerous security issues, the design can't be connected on cell phones
straightforwardly under the portable cloud condition. This is because of
the difficulties forced by remote systems, for example, latency
sensitivity, poor connectivity, and low transmission rates. This prompts
a long inquiry time and additional system activity costs when utilizing
customary hunt plans. This review addresses these issues by proposing a
productive Encrypted Data Search plot as a Mobile Cloud Service. This
creative plan utilizes a lightweight trapdoor (encrypted keyword)
pressure strategy, which enhances the information correspondence handle
by decreasing the trapdoor's size for activity effectiveness. In this
review, we additionally propose two enhancement techniques for record
seek, called the Trapdoor Mapping Table (TMT) module and Ranked Serial
Binary Search (RSBS) calculation, to speed the inquiry time. |
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