Civil and Environmental Engineering Commons^™

Wind Charged Plug-In Hybrid Electric Vehicle, John Patten, Nathan Christensen, Steven Srivastava, Gary Nola

john a patten

With the emergence of electric vehicles (EVs), hybrid vehicles HVs) and plug-in hybrid electric vehicles (PHEVs) from a variety of automotive manufacturers, the electrical grid will need to meet new challenges in supplying the electricity required to charge these vehicles. To help supply the electricity needed by these vehicles, we compared the electricity consumption of a modified Toyota Prius (PHEV) and the output of a small residential wind turbine over the course of one year. Our research seeks to determine whether a small residential wind turbine can supply the necessary electricity demanded by the PHEV annually.

The Impact Of Driving Conditions On Phev Battery Performance, Nathan Christensen, John Patten, Steven Srivastava, Gary P. Nola

john a patten

The battery performance of a modified Prius with a 5 kWh plug-in battery was documented for a year to determine the impact of environmental conditions and user attributes on vehicle performance. Both fuel economy and pure electrical efficiency were compared to ambient temperature. The fuel economy has a positive relationship with ambient temperature until approximately 70˚F where the efficiency begins to drop. Electrical performance has a positive linear relationship with ambient temperature. With the emergence of electric vehicles (EVs) and PHEVs from a variety of automotive manufacturers, information on EV and PHEV performance for consumers will become more important.

State Dependent Properties Of Rail Pads, Sakdirat Kaewunruen, Alexander Remennikov

Alex Remennikov

Rail pad is one of the main components in ballasted railway track systems. It is inserted between the rail and the sleeper to attenuate dynamic wheel/rail interaction forces, preventing the underlying railway track components from excessive stresses. Generally, the dynamic design of tracks relies on the available data, which are mostly focused on the structural condition at a specific toe load. Recent findings show that track irregularities could significantly amplify the loads on railway tracks. This phenomenon gives rise to a concern that the rail pads may experience higher deterioration rate than anticipated in the past. On this ground, an …

Relationship Between Impact Energy And Fracture Toughness Of Prestressed Concrete Railway Sleepers, Sakdirat Kaewunruen, Alexander Remennikov

Alex Remennikov

The prestressed concrete sleepers (or railroad ties), which are installed in railway track systems as the crosstie beam support, are designed to carry and transfer the wheel loads from the rails to the ground. It is well known that railway tracks are subject to impact loading conditions, which are attributable to the train operations with either wheel or rail abnormalities such as flat wheels, dipped rails, etc. These loads are of very high magnitude but short duration. In addition, there exists the potential of repeated load experience during the design life of prestressed concrete sleepers. Prestressed concrete has played a …

Dynamic Design Guidelines For Prestressed Concrete Sleepers, Alexander Remennikov, Martin H. Murray, Sakdirat Kaewunruen

Alex Remennikov

Current design philosophy, outlined in AS 1085.14, is based on the analysis of permissible stresses resulting from quasi-static wheel loads and essentially the static response of concrete sleepers. In general, cracking can incur when the bottom fibre stress is larger than tensile strength of concrete. Premature cracking of prestressed concrete sleepers has been detected in railway tracks. The major cause of cracking is the infrequent but high-magnitude wheel loads produced by a small percentage of “out-of-round” wheels or railhead surface defects, which are crudely accounted for in AS 1085.14 by a single load factor. Based on the current design method, …

Dynamic Properties Of Railway Track And Its Components : A State-Of-The-Art Review, Sakdirat Kaewunruen, Alexander Remennikov

Alex Remennikov

Recent findings indicate one of major causes of damages, which is attributed to the resonant behaviours, in a railway track and its components. Basically, when a railway track is excited to generalised dynamic loading, the railway track deforms and then vibrates for certain duration. Dynamic responses of the railway track and its components are the key to evaluate the structural capacity of railway track and its components. If a dynamic loading resonates the railway track’s dynamic responses, its components tend to have the significant damage from excessive dynamic stresses. For example, a rail vibration could lead to defects in rails …

Evaluation Of Wind Load Integration In Disproportionate Collapse Analysis Of Steel Moment Frames For Column Loss, Simos Gerasimidis, C. C. Baniotopoulos

Simos Gerasimidis

Strategic Drivers Of Delivery Capacity, Lynn Crawford

Lynn Crawford

Recent research into the value of project management has highlighted the importance of 'fit' whereby the internal and external context of an organization would determine the configuration of project management that would add value. A major challenge for organizations, and a differentiator of corporate performance, is the ability to execute strategy. It is a key to corporate agility and the ability to build on global recovery. Projects and programs are the primary vehicles for strategy execution, and project management can therefore be seen as the delivery capability of organisations. In order to add value, project management must be configured to …

New Nanosystem Mixed Reactor For Urban Wastewater Treatment, Masoud Rastegar, Kamran Rahmati Shadbad

Masoud Rastegar

No abstract provided.

Steel Moment Frames Column Loss Analysis: The Influence Of Time Step Size, Simos Gerasimidis, C. C. Baniotopoulos

Simos Gerasimidis

Oil Palm Shell As A Lightweight Aggregate For Production High Strength Lightweight Concrete, Hilmi Mahmud

Hilmi Mahmud

In Malaysia, oil palm shell (OPS) is an agricultural solid waste originating from the palm oil industry. In this investigation old OPS was used for production of high strength lightweight concrete (HSLC). The density, air content, workability, cube compressive strength and water absorption were measured. The effect of five types of curing conditions on 28-day compressive strength was studied. The test results showed that by incorporating limestone powder and without it, it is possible to produce the OPS concretes with 28-day compressive strength of about 43-48 MPa and dry density of about 1870-1990 kg/m3. The compressive strength of OPS HSLC …

“Parametric Study Of The Effects Of Water To Cementitious Materials Ratio And Cementitious Materials Content On The Durability Properties Of High Performance Concrete, Andrew T. Tinsley

Andrew T Tinsley

This study takes a detailed look at the factors that affect the durability of concrete and how they can be applied to the development of a useful performance specification and help to extend the life of bridge decks and other concrete structures exposed to the elements of nature. A series of fifteen mixes (with varying cement contents and water/cement ratios) were performed in order to determine exactly which of these factors have a significant effect on the durability of a concrete mix. Controlling the water/cement ratio is necessary in order to control strength and permeability. Cement content was found to …

Disproportionate Collapse Analysis Of Cable-Stayed Steel Roofs For Cable Loss, Simos Gerasimidis, C. C. Baniotopoulos

Simos Gerasimidis

A New Method Of Producing High Strength Oil Palm Shell Lightweight Concrete, Zamin Jumaat

Zamin Jumaat

This paper presents a new method to produce high strength lightweight aggregate concrete (HSLWAC) using an agricultural solid waste, namely oil palm shell (OPS). This method is based on crushing large old OPS. Crushed OPS are hard and have a strong physical bond with hydrated cement paste. The 28 and 56 days compressive strength achieved in this study were about 53 and 56 MPa, respectively. Furthermore, it was observed that it was possible to produce grade 30 OPS concrete without the addition of any cementitious materials. Compared to previous studies, significantly lower cement content was used to produce this grade …

Bio-Hydrogen Production From Thin Stillage Using Conventional And Acclimatized Anaerobic Digester Sludge, Noha Nasr, Elsayed Elbeshbishy, Hisham Hafez, George Nakhla, M. Hesham El Naggar

Noha El-Sayed Nasr

To assess the viability of biohydrogen production from thin stillage, a comparative evaluation of anaerobic digester sludge (ADS) and acclimatized anaerobic digester sludge (AADS) for biohydrogen production over a wide range of S0/X0 ratio (0.5e8 gCOD/gVSS) was performed. A maximum hydrogen yield of 19.5 L H2/L thin stillage was achieved for the AADS while tests with ADS achieved a maximum yield of only 7.5 L H2/L thin stillage. The optimum range of S0/X0 ratio for hydrogen production was found to be 1 to 2 gCOD/gVSS using conventional ADS and 3 to 6 gCOD/gVSS using AADS. The biomass specific hydrogen production …

Business Strategy And Capital Allocation Optimization Model For Practitioners, Aiyin Jiang, Maged Malek, Adel El-Safty

Aiyin Jiang

Construction Project Cash Flow Planning By Pareto Optimality Efficiency Network Model, Aiyin Jiang, Raja R.A. Issa, Maged Malek

Aiyin Jiang

New Regulations Can Stimulate Improvements In Efficiency And Sustainability For The U.S Cement Industry, Rebecca Mirsky

Rebecca Mirsky

New environmental regulations on toxic and greenhouse gas emissions by cement manufacturers present the U.S. cement industry with significant challenges. This paper describes the current regulatory climate and describes a number of opportunities in which manufacturers can become more efficient in both energy and materials use. Ultimately, the new regulatory climate is seen as an opportunity for the industry to undertake long overdue modernization.

Finding An Optimal Path: Highways Versus Local Roads, Gabriel Leiner

Gabriel Leiner

Commuters across the United States are often presented with the dilemma of whether to wait at an onramp to get on a highway or look for short-cuts on local roads. An answer to this question may lie in the use of Dedicated Short Range Communication (DSRC) wireless technology. With the touch of a button, connected vehicle technology could allow drivers to access real time information about the sizes and speeds of queues at highway onramps, as well as the signal phases of traffic lights on local roads. In the future, drivers could rely on this information to make valid judgments …

Issues Of Wind Power For Renewable Society Construction At 3-11 Earthquake & Tsunami Striken Areas 被災地からの自然エネルギー社会づくりと風力発電の課題, Masayuki Horio

Masayuki Horio

No abstract provided.

Applications Of Homotopy Perturbation Transform Method For Solving Time-Dependent Functional Differential Equations, Habibolla Latifizadeh

H. L. Zadeh

No abstract provided.

Reverse Logic - Safety Of Spent Nuclear Fuel Disposal, Antti Lempinen, Marianne Silvan-Lempinen

Antti Lempinen

No abstract provided.

The Homotopy Perturbation Method For Free Vibration Analysis Of Beam On Elastic Foundation, Baki Ozturk, Safa Bozkurt Coskun

Safa Bozkurt Coskun

In this study, the homotopy perturbation method (HPM) is applied to free vibration analysis of beam on elastic foundation. This numerical method is applied on three different axially loaded cases, namely: 1) one end fixed, the other end simply supported; 2) both ends fixed and 3) both ends simply supported cases. Analytical solutions and frequency factors are evaluated for different ratios of axial load N acting on the beam to Euler buckling load, Nr. The application of HPM for the particular problem in this study gives results which are in excellent agreement with both analytical solutions and the variational iteration …