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Articles 1 - 30 of 440
Full-Text Articles in Engineering
C.V. - Wojciech Budzianowski, Wojciech M. Budzianowski
Renewable Energy And Sustainable Development (Resd) Group, Wojciech M. Budzianowski
Renewable Energy And Sustainable Development (Resd) Group, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Procesy Cieplne I Aparaty (Lab), Wojciech M. Budzianowski
Nonlinear 3d Finite Element Modeling For Structural Failure Analysis Of Concrete Sleepers/Bearers At An Urban Turnout Diamond, Minh Vu, Sakdirat Kaewunruen, Mario Attard
Nonlinear 3d Finite Element Modeling For Structural Failure Analysis Of Concrete Sleepers/Bearers At An Urban Turnout Diamond, Minh Vu, Sakdirat Kaewunruen, Mario Attard
Sakdirat Kaewunruen
Railway urban turnout is a special track system used to divert a train from a particular direction or a particular track onto other directions or other tracks. It is a structural grillage system that consists of steel rails, points (or called “switches”), crossings, steel plates, rubber pads, insulators, fasteners, screw spikes, beam bearers (either tim- ber, polymer, steel, or concrete), ballast and formation. There are two types of turnouts, a conventional turnout and a tangential turnout. Standard conventional turnouts are designed typically for straight main line track. The combination of switch length, heel angle, and cross rate defines the turnout …
Inżynieria Chemiczna Lab., Wojciech M. Budzianowski
Study Of Structural Performance And Durability Of Concrete By Partial Replacement Of Cement With Hypo Sludge (Paper Waste), K Hari Kishan, N .Vidyasagar Lal,, 3 Sateesh Konni
Study Of Structural Performance And Durability Of Concrete By Partial Replacement Of Cement With Hypo Sludge (Paper Waste), K Hari Kishan, N .Vidyasagar Lal,, 3 Sateesh Konni
Innovative Research Publications IRP India
Utilization of industrial waste products as supplementary cementitious materials (SCM) in concrete making is very important aspect in view of economical, environmental and technical reasons. As these supplementary cementitious materials have different chemical and mineralogical composition, their effect on micro structural properties and strength performance vary considerably. While producing paper, various wastes come out from the various processes in paper industries. The preliminary waste from paper industry is named as hypo sludge. In this study the material obtained from the paper industry waste (hypo sludge) is admixed with Portland cement at different replacement levels. The properties of concrete investigated include …
House Of Quality (Hoq) Regarding Truck Drivers Requests, Sajjad Khaksari
House Of Quality (Hoq) Regarding Truck Drivers Requests, Sajjad Khaksari
SAJJAD KHAKSARI
"Quality Engineering & Italian Transport Companies" represents a preliminarily attempt to benefit from Quality Engineering methods for analyzing some parts of the real and hidden worlds of some Italian family-owned transport companies. It tries to highlight some things that normally remain neglected regarding the hidden internal workings of some Italian transport companies. In addition, this paper might be interesting for whoever wants to know more about this period in which some Italian family-run transport companies are facing the challenge of a future balancing modernism and traditionalism in their supply chain management (SCM).
Use Of Coconut Shell As An Aggregate In Concrete: A Review, Sourav Ghosal, S. C. Moulik
Use Of Coconut Shell As An Aggregate In Concrete: A Review, Sourav Ghosal, S. C. Moulik
Innovative Research Publications IRP India
Now-a-days, the rising cost of building materials for construction purposes is a factor of great concern. The price of building materials is rising day by day. Now, most of the researchers are paying much attention on the suitable materials which can reduce the cost of construction as well as increase the strength properties of concrete. Mainly gravel and sand are used in the preparation of conventional concrete. While the use of an agricultural by-product i.e. coconut shell as a partial replacement with conventional coarse aggregates is expected to serve the purpose of encouraging housing developers in building construction. Environmental impact …
Rail Squats: Understand Its Causes, Severity, And Non-Destructive Evaluation Techniques, Sakdirat Kaewunruen, Makoto Ishida
Rail Squats: Understand Its Causes, Severity, And Non-Destructive Evaluation Techniques, Sakdirat Kaewunruen, Makoto Ishida
Sakdirat Kaewunruen
Generally, rail squats are defined by the growth of any cracks that have grown longitudinally through the rail subsurface and some of the cracks propagating to the bottom of rails transversely have branched from initial longitudinal cracks with a depression of rail surface. The rail defects are commonly referred to as ‘squats’ when they were initiated from damage caused by rolling contact fatigue, and as ‘studs’ when they were associated with white etching layer caused by the transform from pearlitic steel due to friction heat generated by wheel sliding or excessive traction. Such rail surface defect induces wheel/rail impact and …
Achieving Carbon Efficiency In Construction And Maintenance Of Railway Turnouts, Crossovers And Diamonds, Sakdirat Kaewunruen, Steve Krezo, Olivia Mirza, Yapping He, Joseph M. Sussman
Achieving Carbon Efficiency In Construction And Maintenance Of Railway Turnouts, Crossovers And Diamonds, Sakdirat Kaewunruen, Steve Krezo, Olivia Mirza, Yapping He, Joseph M. Sussman
Sakdirat Kaewunruen
Railway turnouts, crossovers, and diamonds are special track systems used to divert a train from a particular direction or a particular track onto other directions or other tracks. It is a structural grillage system that consists of steel rails, points, crossings, steel plates, rubber pads, insulators, fasteners, screw spikes, beam bearers (either timber, polymer, steel or concrete), ballast and formation. Usually under dynamic and high-intensity impact loading conditions, structural components of the turnout tend to have relatively short lives compared with those of ordinary open railway tracks, resulting in frequent turnout re- construction and maintenance (ranging from every 10 to …
Severity And Growth Evaluation Of Rail Corrugations On Sharp Curves Using Wheel/Rail Interaction, Sakdirat Kaewunruen, Steve Marich
Severity And Growth Evaluation Of Rail Corrugations On Sharp Curves Using Wheel/Rail Interaction, Sakdirat Kaewunruen, Steve Marich
Sakdirat Kaewunruen
A railway network generally spans over a large distance so the structural health monitoring of such a rail infrastructure system is one of the critical challenges in rail industry practice. Especially in an underground/subway or elevated system, the facilities, resources and time period permitted for critical infrastructure inspection and maintenance is considerably limited. As a result, the automated inspection system of railway is in very high demand. Rail corrugation defect is the periodic, undulated or wave-like vertical alignment of rail surface. The wavelength and severity of rail corrugations is dependant to track structure, track geometry, traction system, rail vehicle behaviours, …
Mudflow Disaster Damage Job Opportunity, Disrupt Social Life And Settlement, Thus Requiring Resettlement. Need To Understand Whether Physical Condition Of Resettlement Is In Accordance With Background And Housing Preference Of Victim, Due To Significant Differences Of Housing Design. Aspects Studied Were Characteristic Of Resettlement, Physical Condition Of House And Socio-Economic Mobility. Research Was Done Using Qualitative Method. Technique Of Data Collection Was Used Retrospective Interviews And Observation. This Research Result Indicates That Most Participants Experienced Conformity In House Physical Condition And Socioeconomic Mobility. Reason Of Unconformity Condition Is Housing Facility Which Has Not Meet Housing Standard., Gitanjali Biranga, S V. . Admane, S S. Shinde
Innovative Research Publications IRP India
Energy efficiency has nowadays become one of the most challenging tasks and this has boosted research on fresh fields, such as Ambient Intelligence. Energy consumption in the housing and tertiary sectors is especially high in developed countries. There is a great potential for energy savings in these sectors. Energy conservation measures are developed for newly constructed buildings and for buildings under restoration. However, to achieve a significant diminution in energy consumption apart from the standard energy-efficiency methods, pioneering technologies should be implemented, including renewable energy. Now, buildings are increasingly anticipated to meet higher and more complex performance requirements. Among these …
Improving Seismic Performance Of Concrete Buildings With Special Moment Frames Using Viscous Damper, Mohammad Javad Dehghan, Mostafa Soleymannejad
Improving Seismic Performance Of Concrete Buildings With Special Moment Frames Using Viscous Damper, Mohammad Javad Dehghan, Mostafa Soleymannejad
Innovative Research Publications IRP India
The present study attempted to investigate the effect of viscous damper on the performance of 10 and 16-story structures. Data modeling was done based on PERFORM 3D software and energy absorption amount was examined in different modes through viscous dampers. To investigate the effects of the so called dampers on the seismic behavior of the structures, the performance of special moment frames with and without viscous damper with the 20% to 30% Resistance against earthquake damages was considered. Also, hysteresis diagram was studied. The research findings revealed an appropriate effect of viscous dampers on decreasing seismic effects of earthquake such …
Obliczenia Rozprzestrzeniania Się Pyłu Drobnego W Powietrzu Atmosferycznym Z Wykorzystaniem Dyfuzyjnych Modeli Gaussa, Robert Oleniacz, Mateusz Rzeszutek
Obliczenia Rozprzestrzeniania Się Pyłu Drobnego W Powietrzu Atmosferycznym Z Wykorzystaniem Dyfuzyjnych Modeli Gaussa, Robert Oleniacz, Mateusz Rzeszutek
Robert Oleniacz
The chapter presents a comparison of results of modelling concentrations of fine dust (suspended dust PM10) in the air with the use of two diffusion models: the Gaussian plume model (used commonly in Poland), and the Gaussian puff model CALPUFF (used significantly less frequently). It indicates discrepancies in obtained results of calculations for point emitters taking into consideration three dimensional options (with the following heights: 20, 40 and 60 m and diameters of respectively: 1.0, 1.5 and 2.0 m). For particular variants, errors were visualised, resulting from use of the simple Gaussian plume model in place of the advanced CALPUFF …
Under Sleeper Pads: Field Investigation Of Their Role In Detrimental Impact Mitigation, Sakdirat Kaewunruen, Alex M. Remennikov
Under Sleeper Pads: Field Investigation Of Their Role In Detrimental Impact Mitigation, Sakdirat Kaewunruen, Alex M. Remennikov
Sakdirat Kaewunruen
Under sleeper pads (USPs) are the component installed under the concrete sleepers generally to improve railway track resilience. Initial development in Europe, particularly in Austria, has encouraged the adoption of the component around the world. In practice, the component has commonly been used in certain applications, mainly to moderate track stiffness in special locations such as turnouts, crossings, and level crossing. In heavy haul operation, the heavier wagons result in sturdier bogie structures, higher unsprung mass, and then higher level of wheel-rail interaction forces. Accordingly, the application of USPs to mitigate detrimental impact load consequence on track structure is presented …
Design Of Holes And Web Openings In Railway Prestressed Concrete Sleepers, Erosha Kahawatta Gamage, Sakdirat Kaewunruen, Alex M. Remennikov
Design Of Holes And Web Openings In Railway Prestressed Concrete Sleepers, Erosha Kahawatta Gamage, Sakdirat Kaewunruen, Alex M. Remennikov
Sakdirat Kaewunruen
As the crosstie beam in railway track systems, the prestressed concrete sleepers (or railroad ties) are principally designed in order to carry wheel loads from the rails to the ground. Their design takes into account static and dynamic loading conditions. It is evident that prestressed concrete has played a significant role as to maintain the high endurance of the sleepers under low to moderate repeated impact loads. In spite of the most common use of the prestressed concrete sleepers in railway tracks, there have always been many demands from rail engineers to improve serviceability and functionality of concrete sleepers. For …
Problem Tree & Italian Transport Companies, Sajjad Khaksari
Problem Tree & Italian Transport Companies, Sajjad Khaksari
SAJJAD KHAKSARI
Slides of Report: Production System Analysis & Italian Transport Companies; A briefly endeavor to modeling, 3th edition; Problem Tree; Production Functions (PF's); Organization Chart; Information Pattern; Standard Time; Make-span (MS); Modeling; DM's; Work Sequence; Report; Table of Agents; Table of Resources; Production System Analysis & Italian Transport CompaniesCourse of Prof. Agostino Villa; Politecnico di Torino, Student: Sajjad Khaksari; June 11, 2015;
Review On Stabilization Of Soil Using Coir Fiber, Innovative Research Publications Irp India, Stuti Maurya, .A.K. Sharma, P.K. Jain, Rakesh Kumar
Review On Stabilization Of Soil Using Coir Fiber, Innovative Research Publications Irp India, Stuti Maurya, .A.K. Sharma, P.K. Jain, Rakesh Kumar
Innovative Research Publications IRP India
Soil stabilization has become a major issue in construction engineering and the researches regarding the effectiveness of using natural wastes are rapidly increasing. The use of natural fibers to reinforce soil is an old and ancient idea. Consequently, randomly distributed fiber reinforced soils have recently attracted increasing attention in geotechnical engineering. The main aim of this paper, therefore, is to review the, benefits, properties and applications of coir fiber in soil reinforcement through reference to published scientific data
Study Of Reinforced Concrete Beam-Column Joint, Innovative Research Publications Irp India, Prakash Panjwani, S.K. Dubey
Study Of Reinforced Concrete Beam-Column Joint, Innovative Research Publications Irp India, Prakash Panjwani, S.K. Dubey
Innovative Research Publications IRP India
The beam column joint is the crucial zone in a reinforced concrete moment resisting frame. It is subjected to large forces during severe ground shaking and its behaviour has a significant influence on the response of the structure. The assumption of rigid joint fails to consider the effects of high shear forces developed within the joint. The shear failure is always brittle in nature which is not an acceptable structural performance especially in seismic conditions. This paper presents a review of the postulated theories associated with the behaviour of joints. Understanding the joint behaviour is essential in exercising proper judgments …
Global Sensitivity Analysis Applied To Model Inversion Problems: A Contribution To Rail Condition Monitoring, René Schenkendorf, Jörn Groos
Global Sensitivity Analysis Applied To Model Inversion Problems: A Contribution To Rail Condition Monitoring, René Schenkendorf, Jörn Groos
René Schenkendorf
Rising demands on railroad infrastructure operator by means of profitability and punctuality call for advanced concepts of Prognostics and Health Management. Condition based preventive maintenance aims at strengthening the rail mode of transport through an optimized scheduling of maintenance actions based on the actual and prognosticated infrastructure condition, respectively. When applying model-based algorithms within the framework of Prognostics and Health Management unknown model parameters have to be identified first. Which of these parameters should be known as precisely as possible can be figured out systematically by a sensitivity analysis. A comprehensive global sensitivity analysis, however, might be prohibitive by means …
Impact Responses Of Prestressing Tendons In Railway Concrete Sleepers In High Speed Rail Environments, Sakdirat Kaewunruen, Alex M. Remennikov
Impact Responses Of Prestressing Tendons In Railway Concrete Sleepers In High Speed Rail Environments, Sakdirat Kaewunruen, Alex M. Remennikov
Sakdirat Kaewunruen
Prestressed concrete sleepers (or railroad ties) are designed in order to carry and transfer the wheel loads from the rails to the ground and are installed as the crosstie beam support in railway track systems. They are subjected to impact loading conditions that are resulted from train operations over wheel or rail abnormalities, such as flat wheels, dipped rails, crossing transfers, rail squats, corrugation, etc. The magnitude of the shock load relies on various factors such as axle load, types of wheel/rail imperfections, speeds of vehicle, track stiffness, etc. This paper demonstrates the development of finite element modelling to evaluate …
Wpływ Instalacji Termicznego Przekształcania Odpadów Komunalnych Na Jakość Powietrza, Robert Oleniacz
Wpływ Instalacji Termicznego Przekształcania Odpadów Komunalnych Na Jakość Powietrza, Robert Oleniacz
Robert Oleniacz
At the turn of 2015/2016 it is planned to launch in Poland a few new municipal solid waste incineration plants. This type activities causes usually concerns of the local community due to their potential negative impact on air quality. Are these fears are, however, justified? The article describes allowable air emissions for new waste incinerators, the actual emissions that occur from such installations, and the current state of knowledge about their impact on air pollution.English title: The impact of installations of municipal solid waste thermal treatment on air quality.
Game Theory In Transport & Logistic World, Sajjad Khaksari
Game Theory In Transport & Logistic World, Sajjad Khaksari
SAJJAD KHAKSARI
"OV & DP and BRT" some assumptions and a Case Study for studying John Nash "Game Theory" method in logistics and transportation world and that is only a briefly attempt to get familiar with the idea. A thought which asks "Is it possible to model and analyze one of the authenticity of the transport or logistics service request with respect to the Game Theory optimization idea?
Love Is A Two Way Street, William W. Riggs, John Gilderbloom
Love Is A Two Way Street, William W. Riggs, John Gilderbloom
William W. Riggs
A half a century ago, we were in love with our streets. They were also living things. They were the open-air living room of our society, the conduct for neighborhood play and discussion, the glue of our social fabric. One of the key urban theorists of the 20th century, Jane Jacobs wrote in Fortune Magazine that the street “…works harder than any other part of downtown. It is the nervous system; it communicates the flavor, the feel, the sights. It is the major point of transaction and communication. Users of downtown know very well that downtown needs not fewer streets, …
Rural Water Sector Policies And Reform – A Review, Innovative Research Publications Irp India, Astha Kumari, Mukul Kulshrestha
Rural Water Sector Policies And Reform – A Review, Innovative Research Publications Irp India, Astha Kumari, Mukul Kulshrestha
Innovative Research Publications IRP India
This paper is an attempt to describe the major components of drinking water in rural sector and its tariff design. With an integrated approach towards improving Quality of Life (QoL) of rural people, ensuring equity and effective public participation as willingness to pay for water. The pressure of rural development programme has been made a frontal attack on poverty through pricing of drinking water. Therefore, water tariffs should be fixed to make people understand the value of water. Present paper describes various works done till date in this field of research
Characteristics Of Flow Meters With Sediment Laden Flow – A Review, Innovative Research Publications Irp India, Abhishek Kala, S.K Mittal, M.K. Choudhary
Characteristics Of Flow Meters With Sediment Laden Flow – A Review, Innovative Research Publications Irp India, Abhishek Kala, S.K Mittal, M.K. Choudhary
Innovative Research Publications IRP India
Measurement of flow is an important aspect in the field of hydraulic engineering, both in case of open channel as well as pipe or conduits. In case of pipe conduits various flow meters are used for flow estimation; out of which venturimeter and orifice meter are most commonly used and conventional means. Pipes or conduit carrying sediment laden flow or slurry-water mixture is very common in most of the industries, sewage carrying system etc. Suitability of flow meters i.e. venturimeter and flow meter need to be analyzed for sediment laden flow. Due to the presence of slurry or sediments, coefficient …
Thrust Of Utilizing Zycosoil Chemical Additive For Vg 10 Paving Mix, Innovative Research Publications Irp India, Tirthankar Dam, Vinal Khambhayta, Daxesh Makwana, Sanjay Jadav, C.B. Mishra
Thrust Of Utilizing Zycosoil Chemical Additive For Vg 10 Paving Mix, Innovative Research Publications Irp India, Tirthankar Dam, Vinal Khambhayta, Daxesh Makwana, Sanjay Jadav, C.B. Mishra
Innovative Research Publications IRP India
Road divisions are the motors of development for economy, work and strengthening. Owing to increments in family unit wage, the requests for customized vehicles have additionally expanded. The blasting exchange in the business vehicle segment has changed the truck business in India, and without a doubt for the wellbeing to meet the requests of mechanical exercises putting more weight on VG 10 adaptable roads, the impact is noted all the more fundamentally with varieties in every day and regular temperatures adding to high anxieties influencing the adaptable asphalt specially in presence of moisture too. India is overflowing with a few …
Validating And Applying Snl-Efdc To Current-Energy-Capture-Devices Simulation, Scott James, Mary Cardenas, Chris Hirlinger
Validating And Applying Snl-Efdc To Current-Energy-Capture-Devices Simulation, Scott James, Mary Cardenas, Chris Hirlinger
Mary Cardenas
With the growing focus on renewable energy, there is increased interest in modeling and optimizing current energy capture (CEC) devices. The interaction of multiple wakes from CEC devices can affect optimal placement strategy, and issues of environmental impacts on sediment transport and large-scale flow should be examined. Numerical models of four flume-scale experiments were built using Sandia National Laboratories’ Environmental Fluid Dynamics Code (SNL-EFDC.) Model predictions were calibrated against measured velocities to estimate flow and turbine parameters. The velocity deficit was sensitive to αmd, the dimensionless Smagorinsky constant related to horizontal momentum diffusion, as well as the k-ε turbulence parameters. …
A Review Of Life Cycle Assessment Method For Building Industry
A Review Of Life Cycle Assessment Method For Building Industry
Faculty of Engineering University of Malaya
A recent study suggested that buildings globally consume up to 40% of energy and responsible for half of world greenhouse gas emission. Introducing life cycle assessment (LCA) to the building industry is important because it can measure every environmental impact involved in every process from cradle to grave systematically. Within the last decade, research on LCA has increased covering from construction process to manufacturing of building materials. The methods to assess buildings are diverse as buildings have different functions, materials, sizes and locations. The aim of this article is to review the LCA methods and to distinguish phases and materials …
Synergistic Sonoelectrochemical Removal Of Substituted Phenols: Implications Of Ultrasonic Parameters And Physicochemical Properties
Faculty of Engineering University of Malaya
The effects of ultrasonic conditions and physicochemical properties on the synergistic degradation in synthetic solution were investigated. A wide range of ultrasound frequencies, including 35, 170, 300, 500 and 700 kHz, and ultrasonic power densities, including 11.3, 22.5 and 31.5 W/L were used. It was revealed that the physical effect of ultrasound plays a major role in synergistic mechanism and 35 kHz was found to be the most effective frequency due to its more vigorous physical effect induced by high implosive energy released from collapse of cavitation bubbles. The highest ultrasonic power density (31.5 W/L) showed the highest synergy index …