journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Condition Monitoring – Cost comparison with and without CM – On-load testing and offload testing –Methods and instruments for CM – Temperature sensitive tapes – Pistol thermometers – wear-debris analysis
Condition Monitoring – Cost comparison with and without CM – On-load testing and offload testing –Methods and instruments for CM – Temperature sensitive tapes – Pistol thermometers – wear-debris analysis
The aim of this guide is to furnish Engineers, Technicians, Supervisors and Managers (that are involved in maintenance activities & planning) with a tool which equips them with technical data and information, often required for effective Maintenance works (especially on Valves); with applications in other areas, such as maintenance of: Pipelines, Pumps, Actuators, Wellhead Equipments etc. Sure you’d find this material useful.
The aim of this guide is to furnish Engineers, Technicians, Supervisors and Managers (that are involved in maintenance activities & planning) with a tool which equips them with technical data and information, often required for effective Maintenance works (especially on Valves); with applications in other areas, such as maintenance of: Pipelines, Pumps, Actuators, Wellhead Equipments etc. Sure you’d find this material useful.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
Condition Monitoring of DC Motor using Artificial Intelligence Techniqueijsrd.com
The complexity of most steel industry always tends to create a problem in monitoring and supervision system. Prompt fault detection and diagnosis is a best way to handle and tackle this problem. Dc motor plays a very vital role in steel industry and there is a strong demand for their reliable and safe operation. The history of fault diagnosis and protection of electrical machines is as old as such machines themselves. However, nowadays, condition monitoring of electrical machines has become increasingly essential. It plays a very important role in their safe operation and helps to avoid heavy production losses in industry. The conditioning monitoring and fault-detection techniques of electrical machines have moved in recent years into artificial intelligence techniques. When an artificial intelligence technique is used, fault detection and evaluation can be accomplished without an expert. In this paper, artificial intelligence (AI) techniques are used to build a condition monitoring system that has incremental learning capabilities. The condition-monitoring of dc motor using AI technique schemes have concentrated on sensing specific failure modes in field windings.
CONDITION-BASED MAINTENANCE USING SENSOR ARRAYS AND TELEMATICSijmnct
Emergence of uniquely addressable embeddable devices has raised the bar on Telematics capabilities.
Though the technology itself is not new, its application has been quite limited until now. Sensor based
telematics technologies generate volumes of data that are orders of magnitude larger than what operators
have dealt with previously. Real-time big data computation capabilities have opened the flood gates for
creating new predictive analytics capabilities into an otherwise simple data log systems, enabling real-time
control and monitoring to take preventive action in case of any anomalies. Condition-based-maintenance,
usage-based-insurance, smart metering and demand-based load generation etc. are some of the predictive analytics use cases for Telematics. This paper presents the approach of condition-based maintenance using
real-time sensor monitoring, Telematics and predictive data analytics.
Assessment of Gearbox Fault DetectionUsing Vibration Signal Analysis and Acou...IOSR Journals
Maintenance is a set of organised activities that are carried out in order to keep an item in its best
operational condition with minimum cost acquired. Predictive maintenance (PdM) is one of the maintenance
program that recommends maintenance decisions based on the information collected through condition
monitoring techniques, statistical process control or equipment performance for the purpose of early detection
and elimination of equipment defects that could lead to unplanned downtime of machinery or unnecessary
expenditures. Particularly Gears and rolling element bearings are critical elements in rotating machinery, so
predictive maintenance is often applied to them. Fault signals of gearboxes or rolling-element bearings are nonstationary.
This paper concludes with a brief discussion on current practices of PDM methodologies such as
vibration analysis and Acoustic Emission analysis, which are widely used as they offers a complimentary tool
for health monitoring or assessment of gears in rotating machineries
Condition-based Maintenance with sensor arrays and telematicsGopalakrishna Palem
Emergence of uniquely addressable embeddable devices has raised bar on Telematics capabilities. Sensor based Telematics technologies generate volumes of data that are orders of magnitude larger than what operators have dealt with previously. Real-time big data architectures enable real-time control and monitoring of data to detect anomalies and take preventive action. Condition-based-maintenance, usage-based-insurance, smart metering and demand-based load generation are some of the predictive analytics use cases for Telematics with real-time data streaming. This paper presents indepth analysis of condition-based maintenance using real-time sensor monitoring, Telematics and predictive data analytics.
Prediction of Case Loss Due to Machine Downtime in Nigerian Bottling CompanyIJCMESJOURNAL
Statistical analysis of five years record in a bottling company was carried out during which the production in the company was at its peak and cost has remain fairly stable (1987 to 1991). Most of the maintenance failures resulting in downtime are attributed to filler, crowner and washer, hence additional maintenance effort toward these machines can significantly cut down on downtime loses. A strong correlation is established between time lost and case lost (r=0.938, p=0.000) with a linear relationship of . Thus a fair knowledge of the expected time lost within a period can be used in predicting the case lost thereby making the needed adjustment in production planning to meet up required production targets.
Monitoring wind turbine using wi fi network for reliable communicationeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
EFFECT OF EQUIPMENT UTILISATION ON ECONOMICS OF MINING PROJECT-A CASE STUDY IAEME Publication
Open pit mining in the world today has cyclic reappearance with prominent role in to mining sphere. The proportion of mineral own by open cast mining is increasing from year to year. This is due to the rapid strides made in the field of manufacture of open pit machinery. There has been a design explosion in the field of machinery, which h ave grown into enormous sizes with production capacities hitherto unimagined. In any commercial establishment, the objective is t o get maximum return per unit of investment. Improper utilization of HEMM have negative consequences on the production, productivity and production cost leading to loss of revenue. There is definite need to highlight the impact of utilization of equipment on the economics of the project.
A Novel Method for Prevention of Bandwidth Distributed Denial of Service AttacksIJERD Editor
Distributed Denial of Service (DDoS) Attacks became a massive threat to the Internet. Traditional
Architecture of internet is vulnerable to the attacks like DDoS. Attacker primarily acquire his army of Zombies,
then that army will be instructed by the Attacker that when to start an attack and on whom the attack should be
done. In this paper, different techniques which are used to perform DDoS Attacks, Tools that were used to
perform Attacks and Countermeasures in order to detect the attackers and eliminate the Bandwidth Distributed
Denial of Service attacks (B-DDoS) are reviewed. DDoS Attacks were done by using various Flooding
techniques which are used in DDoS attack.
The main purpose of this paper is to design an architecture which can reduce the Bandwidth
Distributed Denial of service Attack and make the victim site or server available for the normal users by
eliminating the zombie machines. Our Primary focus of this paper is to dispute how normal machines are
turning into zombies (Bots), how attack is been initiated, DDoS attack procedure and how an organization can
save their server from being a DDoS victim. In order to present this we implemented a simulated environment
with Cisco switches, Routers, Firewall, some virtual machines and some Attack tools to display a real DDoS
attack. By using Time scheduling, Resource Limiting, System log, Access Control List and some Modular
policy Framework we stopped the attack and identified the Attacker (Bot) machines
Hearing loss is one of the most common human impairments. It is estimated that by year 2015 more
than 700 million people will suffer mild deafness. Most can be helped by hearing aid devices depending on the
severity of their hearing loss. This paper describes the implementation and characterization details of a dual
channel transmitter front end (TFE) for digital hearing aid (DHA) applications that use novel micro
electromechanical- systems (MEMS) audio transducers and ultra-low power-scalable analog-to-digital
converters (ADCs), which enable a very-low form factor, energy-efficient implementation for next-generation
DHA. The contribution of the design is the implementation of the dual channel MEMS microphones and powerscalable
ADC system.
Influence of tensile behaviour of slab on the structural Behaviour of shear c...IJERD Editor
-A composite beam is composed of a steel beam and a slab connected by means of shear connectors
like studs installed on the top flange of the steel beam to form a structure behaving monolithically. This study
analyzes the effects of the tensile behavior of the slab on the structural behavior of the shear connection like slip
stiffness and maximum shear force in composite beams subjected to hogging moment. The results show that the
shear studs located in the crack-concentration zones due to large hogging moments sustain significantly smaller
shear force and slip stiffness than the other zones. Moreover, the reduction of the slip stiffness in the shear
connection appears also to be closely related to the change in the tensile strain of rebar according to the increase
of the load. Further experimental and analytical studies shall be conducted considering variables such as the
reinforcement ratio and the arrangement of shear connectors to achieve efficient design of the shear connection
in composite beams subjected to hogging moment.
Gold prospecting using Remote Sensing ‘A case study of Sudan’IJERD Editor
Gold has been extracted from northeast Africa for more than 5000 years, and this may be the first
place where the metal was extracted. The Arabian-Nubian Shield (ANS) is an exposure of Precambrian
crystalline rocks on the flanks of the Red Sea. The crystalline rocks are mostly Neoproterozoic in age. ANS
includes the nations of Israel, Jordan. Egypt, Saudi Arabia, Sudan, Eritrea, Ethiopia, Yemen, and Somalia.
Arabian Nubian Shield Consists of juvenile continental crest that formed between 900 550 Ma, when intra
oceanic arc welded together along ophiolite decorated arc. Primary Au mineralization probably developed in
association with the growth of intra oceanic arc and evolution of back arc. Multiple episodes of deformation
have obscured the primary metallogenic setting, but at least some of the deposits preserve evidence that they
originate as sea floor massive sulphide deposits.
The Red Sea Hills Region is a vast span of rugged, harsh and inhospitable sector of the Earth with
inimical moon-like terrain, nevertheless since ancient times it is famed to be an abode of gold and was a major
source of wealth for the Pharaohs of ancient Egypt. The Pharaohs old workings have been periodically
rediscovered through time. Recent endeavours by the Geological Research Authority of Sudan led to the
discovery of a score of occurrences with gold and massive sulphide mineralizations. In the nineties of the
previous century the Geological Research Authority of Sudan (GRAS) in cooperation with BRGM utilized
satellite data of Landsat TM using spectral ratio technique to map possible mineralized zones in the Red Sea
Hills of Sudan. The outcome of the study mapped a gossan type gold mineralization. Band ratio technique was
applied to Arbaat area and a signature of alteration zone was detected. The alteration zones are commonly
associated with mineralization. The alteration zones are commonly associated with mineralization. A filed check
confirmed the existence of stock work of gold bearing quartz in the alteration zone. Another type of gold
mineralization that was discovered using remote sensing is the gold associated with metachert in the Atmur
Desert.
Reducing Corrosion Rate by Welding DesignIJERD Editor
The paper addresses the importance of welding design to prevent corrosion at steel. Welding is
used to join pipe, profiles at bridges, spindle, and a lot more part of engineering construction. The
problems happened associated with welding are common issues in these fields, especially corrosion.
Corrosion can be reduced with many methods, they are painting, controlling humidity, and also good
welding design. In the research, it can be found that reducing residual stress on the welding can be
solved in corrosion rate reduction problem.
Preheating on 500oC and 600oC give better condition to reduce corosion rate than condition after
preheating 400oC. For all welding groove type, material with 500oC and 600oC preheating after 14 days
corrosion test is 0,5%-0,69% lost. Material with 400oC preheating after 14 days corrosion test is 0,57%-0,76%
lost.
Welding groove also influence corrosion rate. X and V type welding groove give better condition to reduce
corrosion rate than use 1/2V and 1/2 X welding groove. After 14 days corrosion test, the samples with
X welding groove type is 0,5%-0,57% lost. The samples with V welding groove after 14 days corrosion test is
0,51%-0,59% lost. The samples with 1/2V and 1/2X welding groove after 14 days corrosion test is 0,58%-
0,71% lost.
Router 1X3 – RTL Design and VerificationIJERD Editor
Routing is the process of moving a packet of data from source to destination and enables messages
to pass from one computer to another and eventually reach the target machine. A router is a networking device
that forwards data packets between computer networks. It is connected to two or more data lines from different
networks (as opposed to a network switch, which connects data lines from one single network). This paper,
mainly emphasizes upon the study of router device, it‟s top level architecture, and how various sub-modules of
router i.e. Register, FIFO, FSM and Synchronizer are synthesized, and simulated and finally connected to its top
module.
Active Power Exchange in Distributed Power-Flow Controller (DPFC) At Third Ha...IJERD Editor
This paper presents a component within the flexible ac-transmission system (FACTS) family, called
distributed power-flow controller (DPFC). The DPFC is derived from the unified power-flow controller (UPFC)
with an eliminated common dc link. The DPFC has the same control capabilities as the UPFC, which comprise
the adjustment of the line impedance, the transmission angle, and the bus voltage. The active power exchange
between the shunt and series converters, which is through the common dc link in the UPFC, is now through the
transmission lines at the third-harmonic frequency. DPFC multiple small-size single-phase converters which
reduces the cost of equipment, no voltage isolation between phases, increases redundancy and there by
reliability increases. The principle and analysis of the DPFC are presented in this paper and the corresponding
simulation results that are carried out on a scaled prototype are also shown.
Mitigation of Voltage Sag/Swell with Fuzzy Control Reduced Rating DVRIJERD Editor
Power quality has been an issue that is becoming increasingly pivotal in industrial electricity
consumers point of view in recent times. Modern industries employ Sensitive power electronic equipments,
control devices and non-linear loads as part of automated processes to increase energy efficiency and
productivity. Voltage disturbances are the most common power quality problem due to this the use of a large
numbers of sophisticated and sensitive electronic equipment in industrial systems is increased. This paper
discusses the design and simulation of dynamic voltage restorer for improvement of power quality and
reduce the harmonics distortion of sensitive loads. Power quality problem is occurring at non-standard
voltage, current and frequency. Electronic devices are very sensitive loads. In power system voltage sag,
swell, flicker and harmonics are some of the problem to the sensitive load. The compensation capability
of a DVR depends primarily on the maximum voltage injection ability and the amount of stored
energy available within the restorer. This device is connected in series with the distribution feeder at
medium voltage. A fuzzy logic control is used to produce the gate pulses for control circuit of DVR and the
circuit is simulated by using MATLAB/SIMULINK software.
Study on the Fused Deposition Modelling In Additive ManufacturingIJERD Editor
Additive manufacturing process, also popularly known as 3-D printing, is a process where a product
is created in a succession of layers. It is based on a novel materials incremental manufacturing philosophy.
Unlike conventional manufacturing processes where material is removed from a given work price to derive the
final shape of a product, 3-D printing develops the product from scratch thus obviating the necessity to cut away
materials. This prevents wastage of raw materials. Commonly used raw materials for the process are ABS
plastic, PLA and nylon. Recently the use of gold, bronze and wood has also been implemented. The complexity
factor of this process is 0% as in any object of any shape and size can be manufactured.
Spyware triggering system by particular string valueIJERD Editor
This computer programme can be used for good and bad purpose in hacking or in any general
purpose. We can say it is next step for hacking techniques such as keylogger and spyware. Once in this system if
user or hacker store particular string as a input after that software continually compare typing activity of user
with that stored string and if it is match then launch spyware programme.
A Blind Steganalysis on JPEG Gray Level Image Based on Statistical Features a...IJERD Editor
This paper presents a blind steganalysis technique to effectively attack the JPEG steganographic
schemes i.e. Jsteg, F5, Outguess and DWT Based. The proposed method exploits the correlations between
block-DCTcoefficients from intra-block and inter-block relation and the statistical moments of characteristic
functions of the test image is selected as features. The features are extracted from the BDCT JPEG 2-array.
Support Vector Machine with cross-validation is implemented for the classification.The proposed scheme gives
improved outcome in attacking.
Secure Image Transmission for Cloud Storage System Using Hybrid SchemeIJERD Editor
- Data over the cloud is transferred or transmitted between servers and users. Privacy of that
data is very important as it belongs to personal information. If data get hacked by the hacker, can be
used to defame a person’s social data. Sometimes delay are held during data transmission. i.e. Mobile
communication, bandwidth is low. Hence compression algorithms are proposed for fast and efficient
transmission, encryption is used for security purposes and blurring is used by providing additional
layers of security. These algorithms are hybridized for having a robust and efficient security and
transmission over cloud storage system.
Application of Buckley-Leverett Equation in Modeling the Radius of Invasion i...IJERD Editor
A thorough review of existing literature indicates that the Buckley-Leverett equation only analyzes
waterflood practices directly without any adjustments on real reservoir scenarios. By doing so, quite a number
of errors are introduced into these analyses. Also, for most waterflood scenarios, a radial investigation is more
appropriate than a simplified linear system. This study investigates the adoption of the Buckley-Leverett
equation to estimate the radius invasion of the displacing fluid during waterflooding. The model is also adopted
for a Microbial flood and a comparative analysis is conducted for both waterflooding and microbial flooding.
Results shown from the analysis doesn’t only records a success in determining the radial distance of the leading
edge of water during the flooding process, but also gives a clearer understanding of the applicability of
microbes to enhance oil production through in-situ production of bio-products like bio surfactans, biogenic
gases, bio acids etc.
Gesture Gaming on the World Wide Web Using an Ordinary Web CameraIJERD Editor
- Gesture gaming is a method by which users having a laptop/pc/x-box play games using natural or
bodily gestures. This paper presents a way of playing free flash games on the internet using an ordinary webcam
with the help of open source technologies. Emphasis in human activity recognition is given on the pose
estimation and the consistency in the pose of the player. These are estimated with the help of an ordinary web
camera having different resolutions from VGA to 20mps. Our work involved giving a 10 second documentary to
the user on how to play a particular game using gestures and what are the various kinds of gestures that can be
performed in front of the system. The initial inputs of the RGB values for the gesture component is obtained by
instructing the user to place his component in a red box in about 10 seconds after the short documentary before
the game is finished. Later the system opens the concerned game on the internet on popular flash game sites like
miniclip, games arcade, GameStop etc and loads the game clicking at various places and brings the state to a
place where the user is to perform only gestures to start playing the game. At any point of time the user can call
off the game by hitting the esc key and the program will release all of the controls and return to the desktop. It
was noted that the results obtained using an ordinary webcam matched that of the Kinect and the users could
relive the gaming experience of the free flash games on the net. Therefore effective in game advertising could
also be achieved thus resulting in a disruptive growth to the advertising firms.
Hardware Analysis of Resonant Frequency Converter Using Isolated Circuits And...IJERD Editor
-LLC resonant frequency converter is basically a combo of series as well as parallel resonant ckt. For
LCC resonant converter it is associated with a disadvantage that, though it has two resonant frequencies, the
lower resonant frequency is in ZCS region[5]. For this application, we are not able to design the converter
working at this resonant frequency. LLC resonant converter existed for a very long time but because of
unknown characteristic of this converter it was used as a series resonant converter with basically a passive
(resistive) load. . Here, it was designed to operate in switching frequency higher than resonant frequency of the
series resonant tank of Lr and Cr converter acts very similar to Series Resonant Converter. The benefit of LLC
resonant converter is narrow switching frequency range with light load[6] . Basically, the control ckt plays a
very imp. role and hence 555 Timer used here provides a perfect square wave as the control ckt provides no
slew rate which makes the square wave really strong and impenetrable. The dead band circuit provides the
exclusive dead band in micro seconds so as to avoid the simultaneous firing of two pairs of IGBT’s where one
pair switches off and the other on for a slightest period of time. Hence, the isolator ckt here is associated with
each and every ckt used because it acts as a driver and an isolation to each of the IGBT is provided with one
exclusive transformer supply[3]. The IGBT’s are fired using the appropriate signal using the previous boards
and hence at last a high frequency rectifier ckt with a filtering capacitor is used to get an exact dc
waveform .The basic goal of this particular analysis is to observe the wave forms and characteristics of
converters with differently positioned passive elements in the form of tank circuits.
Simulated Analysis of Resonant Frequency Converter Using Different Tank Circu...IJERD Editor
LLC resonant frequency converter is basically a combo of series as well as parallel resonant ckt. For
LCC resonant converter it is associated with a disadvantage that, though it has two resonant frequencies, the
lower resonant frequency is in ZCS region [5]. For this application, we are not able to design the converter
working at this resonant frequency. LLC resonant converter existed for a very long time but because of
unknown characteristic of this converter it was used as a series resonant converter with basically a passive
(resistive) load. . Here, it was designed to operate in switching frequency higher than resonant frequency of the
series resonant tank of Lr and Cr converter acts very similar to Series Resonant Converter. The benefit of LLC
resonant converter is narrow switching frequency range with light load[6] . Basically, the control ckt plays a
very imp. role and hence 555 Timer used here provides a perfect square wave as the control ckt provides no
slew rate which makes the square wave really strong and impenetrable. The dead band circuit provides the
exclusive dead band in micro seconds so as to avoid the simultaneous firing of two pairs of IGBT’s where one
pair switches off and the other on for a slightest period of time. Hence, the isolator ckt here is associated with
each and every ckt used because it acts as a driver and an isolation to each of the IGBT is provided with one
exclusive transformer supply[3]. The IGBT’s are fired using the appropriate signal using the previous boards
and hence at last a high frequency rectifier ckt with a filtering capacitor is used to get an exact dc
waveform .The basic goal of this particular analysis is to observe the wave forms and characteristics of
converters with differently positioned passive elements in the form of tank circuits. The supported simulation
is done through PSIM 6.0 software tool
Amateurs Radio operator, also known as HAM communicates with other HAMs through Radio
waves. Wireless communication in which Moon is used as natural satellite is called Moon-bounce or EME
(Earth -Moon-Earth) technique. Long distance communication (DXing) using Very High Frequency (VHF)
operated amateur HAM radio was difficult. Even with the modest setup having good transceiver, power
amplifier and high gain antenna with high directivity, VHF DXing is possible. Generally 2X11 YAGI antenna
along with rotor to set horizontal and vertical angle is used. Moon tracking software gives exact location,
visibility of Moon at both the stations and other vital data to acquire real time position of moon.
“MS-Extractor: An Innovative Approach to Extract Microsatellites on „Y‟ Chrom...IJERD Editor
Simple Sequence Repeats (SSR), also known as Microsatellites, have been extensively used as
molecular markers due to their abundance and high degree of polymorphism. The nucleotide sequences of
polymorphic forms of the same gene should be 99.9% identical. So, Microsatellites extraction from the Gene is
crucial. However, Microsatellites repeat count is compared, if they differ largely, he has some disorder. The Y
chromosome likely contains 50 to 60 genes that provide instructions for making proteins. Because only males
have the Y chromosome, the genes on this chromosome tend to be involved in male sex determination and
development. Several Microsatellite Extractors exist and they fail to extract microsatellites on large data sets of
giga bytes and tera bytes in size. The proposed tool “MS-Extractor: An Innovative Approach to extract
Microsatellites on „Y‟ Chromosome” can extract both Perfect as well as Imperfect Microsatellites from large
data sets of human genome „Y‟. The proposed system uses string matching with sliding window approach to
locate Microsatellites and extracts them.
Importance of Measurements in Smart GridIJERD Editor
- The need to get reliable supply, independence from fossil fuels, and capability to provide clean
energy at a fixed and lower cost, the existing power grid structure is transforming into Smart Grid. The
development of a smart energy distribution grid is a current goal of many nations. A Smart Grid should have
new capabilities such as self-healing, high reliability, energy management, and real-time pricing. This new era
of smart future grid will lead to major changes in existing technologies at generation, transmission and
distribution levels. The incorporation of renewable energy resources and distribution generators in the existing
grid will increase the complexity, optimization problems and instability of the system. This will lead to a
paradigm shift in the instrumentation and control requirements for Smart Grids for high quality, stable and
reliable electricity supply of power. The monitoring of the grid system state and stability relies on the
availability of reliable measurement of data. In this paper the measurement areas that highlight new
measurement challenges, development of the Smart Meters and the critical parameters of electric energy to be
monitored for improving the reliability of power systems has been discussed.
Study of Macro level Properties of SCC using GGBS and Lime stone powderIJERD Editor
One of the major environmental concerns is the disposal of the waste materials and utilization of
industrial by products. Lime stone quarries will produce millions of tons waste dust powder every year. Having
considerable high degree of fineness in comparision to cement this material may be utilized as a partial
replacement to cement. For this purpose an experiment is conducted to investigate the possibility of using lime
stone powder in the production of SCC with combined use GGBS and how it affects the fresh and mechanical
properties of SCC. First SCC is made by replacing cement with GGBS in percentages like 10, 20, 30, 40, 50 and
by taking the optimum mix with GGBS lime stone powder is blended to mix in percentages like 5, 10, 15, 20 as
a partial replacement to cement. Test results shows that the SCC mix with combination of 30% GGBS and 15%
limestone powder gives maximum compressive strength and fresh properties are also in the limits prescribed by
the EFNARC.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Mission to Decommission: Importance of Decommissioning Products to Increase E...
International Journal of Engineering Research and Development (IJERD)
1. International Journal of Engineering Research and Development
e-ISSN: 2278-067X, p-ISSN: 2278-800X, www.ijerd.com
Volume 6, Issue 12 (May 2013), PP. 15-20
15
Master Maintenance: It Is To Ensure The Availability Of
Such Equipment And Its Production
1
Mounia taleb, 2
Rachid Chaib, 3
Ion Verzea and 3
Irina Cozminca
1
Département d’électromécanique minière, Université Larbi Tebbessi, Tébessa, Algérie
2
laboratoire ingénierie de transport et environnement, Université Mentouri Constantine, Algérie
3
Technical University Gh. Asachi Iasi, Romania.
Résumé:- The effectiveness of the maintenance of the industrial systems is an economically challenge
in the current strategic industry of cements for a country like Algeria, where quick and effective
decision making is needed. Main difficulties and sources of inefficiency lies in the choice of
maintenance actions to take in case of machine malfunction, especially when the machine plays a vital
role in the process of production. Some decisions may result in heavy economical consequences. So, to
avoid unexpected stops of production and the economic effects resulting therefrom, must continuously
monitor the equipment and "stalk" all the warning signs of defects before it's too late. However, as this
industry offers machines with complex installations or high security requirements, the reduction of
operating costs and control of the availability of these facilities are required, must given to
maintenance of the systems a stately role. Thus, and despite the age and complexity of the equipment,
maintenance service must provide reliable and easily interpretable diagnosis to intervene only in the
presence of defective items and therefore avoid the disassembly and reassembly unnecessary, targeting
the faulty element, do the selective maintenance and thus minimize human errors and downtime for the
repair, an objective of this work. For this purpose, must continuously adapt to technical, technological
and organizational progress. Moreover, the need for cement in industrial environment in Algeria
(Habitat and construction, East-West Highway, dams etc) imposes new implications for strategies of
companies in this field. Therefore, this work is of major importance to the Algerian industry, especially
cement or unexpected failures lead to high repair bills, excluding inflation and delay accumulated in
different sectors, in particular the habitat and construction.
Key words:- cement, failure, diagnosis, repair, maintenance, disassembly.
I. INTRODUCTION
The effectiveness of the maintenance of the industrial systems is a major economic issue for their
commercial exploitation. The main difficulties and sources of inefficiency reside in the choice of the
maintenance actions to take especially when the machine plays a vital role in the process of production. So to
avoid unexpected stops of production and the considerable economic effects resulting therefore must
continuously monitor the equipment and "stalk" all the warning signs of defects before it’s too late. Now,
maintenance operations can be heavy consequences for several reasons. First of all, these interventions may
affect reliability. They often require an interruption of operation of the system. In this case, during any phase of
maintenance, the system is not operational. More the maintenance phase is long it is costly due to the
unavailability of the system. Therefore the maintenance phase should ideally be reduced of operations to
replace, without trial and error, equipment really down [1]. It is the case of the cement industry which has
machinery and complex installations or pending case is more economical and systematic interventions are often
unnecessary:
- expensive spare parts, labour and loss of production [2, 3],
- delicate because the high safety requirements, the reduction of operating costs and control of the availability
of these devices are required [4].
Now, a maintenance action is to replace the equipment that have failed and who are no longer able to
perform their function without disruption of the reliability of system [5], while avoiding the inevitable human
errors during the stops and service discounts. All these requirements give maintenance service a prominent role
while providing reliable and easily interpretable diagnosis despite the complexity and the age of the equipment.
So get to minimize downtime and repair time objective this work.
Moreover, the Algeria embarked on major developmental projects in transportation, housing and
construction (housing, highway, metro, trams, etc.) requiring new implications for strategies of maintenance
meets industrial requirements imposed by the operation. To this end, to ensure the durability of cement, be
2. Master Maintenance: It Is To Ensure The Availability Of Such Equipment…
16
credible, competitive and successful in the market, the maintenance services must continually adapt to technical,
technological and organizational progress.
II. METHODOLOGY OF WORK
In this work, it appealed the most used tool to approach in conditional maintenance [5], vibration
analysis, during the monitoring and diagnostic procedures. The conditional approach based on inspection before
a decision of repair, can be approached in two steps: surveillance and diagnosis, Figure 1. The monitoring is
based on periodic monitoring of indicators of degradation that overflow thresholds, inform about the presence of
a default, global level, need to detect more, spectral analysis. The effectiveness of detection of degradation of
machines organs depends on the conditions of measurement (positions of the measuring points, types of sensors,
frequency bands, etc) and especially the level of preconceived alarm thresholds. The diagnosis is the tool for the
determination of the precise nature of the default, its gravity and the urgency of intervention. Its principle is
articulated around the following steps:
- the extraction of information from means of appropriate measures or observations made the rounds by
supervisory personnel;
- the development of features and signatures associated with symptoms;
- the detection of a malfunction;
- the implementation of a diagnostic method of failure or degradation from use of knowledge on cause-
effect relationships;
- finally, the taken decision (judgment of the installation or reconfiguration).
Figure 1: Principle of a diagnosis [6]
III. APPLICATION
This work involves the supervision of equipment control fan R1S07 in the area believed the
Elmalabiod cement, figure 3, consisting essentially of an engine, a gearbox and a fan.
Figure 3: control fan equipment
3.1. Used equipment
- manifold Analyzer: MOVI PACK
- accelerometer: ASH 201
- vibration analysis software: ONE PROD (XPR 300)
3.2. Technical characteristics of control equipment
Engine
Table 1: Technical characteristics of the engine
Réducteur
Table 2: Technical characteristics of the reducer
3. Master Maintenance: It Is To Ensure The Availability Of Such Equipment…
17
Ventilateur
Table 3: Technical characteristics of the fan
3.3. Search for defects
Following a noise found and reported by the workers on the production line of cement. A monitoring
system adopted by the maintenance service. The measuring points have been configured with special attention.
The operation of the machine is bound to every moment to his damage, a particular interest in levels as these are
the path to passage for the vibration. We have configured eight-point measures to assess the behaviour of
equipment, figure 4.
Figure 4 : diagram and the points of measure adopted
Motor fundamental frequency: 24.7 Hz
Frequency of gear meshing CASB 15.3: 642.2 Hz
Frequency fan: 10.88 Hz
3.3.1. Engine
The measures identified in the overall analysis are represented in figure 5a.
Figure 5a: Trendline NG acceleration, speed and engine DEF.
Finding:
- overall vibration levels found in acceleration are acceptable.
- the overall vibration levels in speed are acceptable.
- lack of acceptable bearing factor.
In conclusion the overall vibration behaviour of the engine is stable at an acceptable threshold;
however we turn to spectral analysis, figure 5b, for more information on the State of health of the engine and
determine the source of noise.
Figure 5b: spectral analysis of the engine
4. Master Maintenance: It Is To Ensure The Availability Of Such Equipment…
18
Finding: - stable Amplitudes at the frequency of rotation of the motor 0.02 g to 24.87Hz.
- Balance of the 3rd harmonic of frequency of rotation of the motor including the threshold remains tolerable.
- Impact on the frequency of rotation of the motor.
3.3.2. Gear B.C.S.A
The measurements taken at the entrance and exit of the reduction in the overall analysis are
respectively represented in figures 6 and 7.
Figure 6: Trendline NG acceleration, speed and reducing DEF.
Figure 7 : Trendline NG acceleration, speed and reducing DEF
Finding:
- the overall vibration levels in speed and acceleration are high and bearing failure is also high.
- Evolution of NG acceleration and the DEF which high 9.18 g / 10.2DEF;
- Evolution of NG acceleration and DEF vertically at a level high 7.3 g / 10.5DEF.
For more details about this behaviour we turn to spectral analysis, figures 8et 9.
Figure 8: spectrum may 2011
Figure 9: spectrum zoom.
5. Master Maintenance: It Is To Ensure The Availability Of Such Equipment…
19
For more precision on the State of health of the bearing, we do use the envelope analysis (bearing Fault
Detection), figure 10.
Figure 10: Analysis of envelope
Finding:
- Evolution of the amplitude of the second harmonic of frequency of meshing at the entrance to the reducer
of 0.57 g to 0.63 g.
- Side bands (modulation) around the frequency of meshing spaced by the frequency of rotation of the shaft
of PV 10.93Hz output.
- Comb of skate on 296.88Hz frequency which corresponds to the frequency of default internal bearing ring
bearing shaft GV (see analysis of envelope) 4.
3.3.3. Bearings fan
The global level analysis gave results following, figure11.
Figure 10 : Trendline NG acceleration, speed and bearing 8 DEF.
Conclusion:
- Low development of the NG speed of 1.8 to 2.14 mm/s which the threshold remains acceptable.
- Overall vibration levels found in acceleration on the bearings of the fan are tolerable.
- The overall vibration levels in speed on the fan bearings are acceptable.
- Factor tolerable bearing failure.
For more precision on the behaviour of the fan, we turn to the spectral analysis, figure 12.
Figure 12 : Analyse Spectrale
6. Master Maintenance: It Is To Ensure The Availability Of Such Equipment…
20
Finding:-unbalance fan acceptable 0.01 g to 10.95 Hz.
The envelope spectrum reveals lack of inner ring of 1.95 g (danger threshold) with presence of
Sidebands on the frequency of rotation of the SGS that requires a change in working capital as soon as possible.
IV. CONCLUSION
Technical and industrial production tool control is based on the routine maintenance of equipment and
systems, and their exceptional maintenance which is in relation to end of their technical life. In its most general
sense, the maintenance is not limited to the corrective actions carried out on equipment, such as the repair or
replacement, but it aims to ensure that machines are able to perform the duties expected of them, in conditions
of security and profitability permanently. These actions include key equipment controls to carry a diagnosis on
the State of the latter. Thus, should the industry ensure that the operators of facilities and strategic machines
(economically and safely) implement maintenance policies tailored to issues of safety and security, in the
interests of quality and competitiveness. Now, in practice, facility age and market competitiveness becomes a
major concern of the industrialists. Thus, it is essential that the maintenance remains adapted to the role it
should play in the prevention of incidents and unplanned stoppages: detect and correct defects before they
compromise the health of the equipment, or the production and security in the enterprise. The vibration analysis
allows to establish files to know the evolution of the State of the machine and provide safe intervention dates,
intervene just before the failure occurs and the replacement wisely. This allows to improve the operation of the
machines and bring them to a level often exceeding the specifications of origins of the equipment. Thus, the
phase of maintenance should ideally be reduced to operations to replace the equipment actually failed without
trial and error, and make selective maintenance: "the vibration signal is the identity of the machine".
REFERENCES
[1]. Pauline RIBOT, Vers l'intégration diagnostic/pronostic pour la maintenance des systèmes
complexes,Doctorant de l’université de Toulouse, 2009.
[2]. R. Chaib, A. Benretem, S. Teyar and I. Verzea, Management of maintenance by vibratory analysis
case: a planetary reducer, World Journal of Engineering. Vol.4, N°.1 (2007), Pp 22-27. Sun Light
Publishing, Canada.ISSN: 1708-5284.
[3]. Rachid Chaïb, Ahmed Bellaouar, Mohamed Benidir, Ion Verzea; For a better control of the availability
of the industrial equipments, Recent revue, Vol. 11 (2010), No. 1 (28), March 2010, Pp.7-10 ; Brasov-
Romania, ISSN 1582-0246.
[4]. Mounia Taleb, Rachid Chaib et Yahyia Chetouani, Pour promouvoir une culture de santé et de sécurité
au travail dans les cimenteries, Congrès International en Génie Industriel et Management des Systèmes
CIGIMS 2012 Faculté des Sciences et Techniques de Fès, Fès 18 – 19 Avril 2012, Maroc.
[5]. A. Boulanger, C. Pachaud, diagnostic vibratoire en maintenance préventive, Dunod, Paris 1988.
[6]. Flavien Peysson, diagnostic des systèmes, C94, aide au diagnostic, d’après le support de cours de
Hassan Noura ; Polytech Marseille.