Engineering Commons^™

P&O, Arezoo Eshraghi

AREZOO ESHRAGHI

No abstract provided.

کارگاه اصول نگارش مقالات علمی 1, Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.

Impact Of Alkaline Doping And Reducing Conditions On Lafeo3, Geoffrey L. Beausoleil Ii

Geoffrey L Beausoleil II

Efficient and reliable materials for gas separation, syngas production, and hybrid nuclear power plants must be capable of reliably operating at a high-temperature range of 700-1000°C and under exposure to highly oxidizing and reducing conditions. Candidate materials for these applications include alkaline metal doped lanthanum ferrite.

In the first study, the impact of A site substitution by different alkaline metals on lanthanum ferrite (LMF, M=Ca, Sr, and Ba) was investigated. The study focused on thermal expansion near the Néel transition temperature and a magneto-elastic contribution to thermal expansion was identified for each sample. Iron oxidation, Fe3+ to Fe4+, was identified …

My Lecture Notes (Heat Transfer 1) - (Chapter8), Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.

New Three-Phase Multilevel Inverter With Reduced Number Of Power Electronic Components, Saad Mekhilef

Saad Mekhilef

In this paper, a new configuration of a three-phase five-level multilevel voltage-source inverter is introduced. The proposed topology constitutes the conventional three-phase two-level bridge with three bidirectional switches. A multilevel dc link using fixed dc voltage supply and cascaded half-bridge is connected in such a way that the proposed inverter outputs the required output voltage levels. The fundamental frequency staircase modulation technique is easily used to generate the appropriate switching gate signals. For the purpose of increasing the number of voltage levels with fewer number of power electronic components, the structure of the proposed inverter is extended and different methods …

My Lecture Notes (Heat Transfer 1) - (Chapter 7), Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.

The Probabilistic Characterization Of Severe Rainstorm Events: Applications Of Threshold Analysis To Climate Change Impacts, Barry A. Palynchuk Phd

Barry A. Palynchuk PhD

A summary of PhD thesis, with emphasis upon storm event definition, and climate change impacts upon rainfall depth, duration, and intensity.

Bridge-Track Interaction Under Elevated Temperatures, Sakdirat Kaewunruen

Sakdirat Kaewunruen

This paper presents the adaptability to short-term climate variability and extreme events of existing infrastructures in Australia, especially railway track bridges. The main objective of this research was to analyse the interaction between the track and bridge under elevated temperatures. The scope of work was to evaluate the behaviour of the track and bridge interaction throughout temperature ranges experienced in summer periods whereas the expansion and contraction of materials are different in nature. This investigation was emphasised on the differential longitudinal behaviours of railway track and bridge structure. A nonlinear 3D finite element model of a railway bridge (ballast top) …

Advances In Rail Track Infrastructure Research And Practice, Manicka Dhanasekar, Alex M. Remennikov, Sakdirat Kaewunruen, Nannan Zong

Sakdirat Kaewunruen

Railway infrastructure plays a critical role in urban development, mobility, and economic growth of society. This focus issue of the Electronic Journal of Structural Engineering is devoted to a special theme, “Advances in Rail Track Infrastructure and Practice - ARTRP”. It contains articles, which were rigorously peer reviewed and accepted from a list of invited manuscripts that demonstrate significant innovation in the area of the structural engineering aspects of the rail track infrastructure. Over the past century or two, rail industry slowly but steadily evolved through significant innovations in the industry; academic research in rail is relatively new. Rail is …

On The Residual Energy Toughness Of Prestressed Concrete Sleepers In Railway Track Structures Subjected To Repeated Impact Loads, Sakdirat Kaewunruen, Alex M. Remennikov

Sakdirat Kaewunruen

Installed as the crosstie beam support in railway track systems, the prestressed concrete sleepers (or railroad ties) are designed in order to carry and transfer the wheel loads from the rails to the ground. It is nowadays best known that railway tracks are subject to the 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, as well as there exists the potential of repeated load experience during the design life of the prestressed concrete sleepers. These …

Optimizing The Sterilization Process Of Canned Food Using Temperature Distribution Studies, Ibrahim M. Ismail, Alaa Fahmy, Ahmed Azab, Magdy Abadir, Seif-Eddeen K. Fateen

Seif-Eddeen K Fateen

The thermal processing of canned food is the most important step in the canning procedure. Retort operating procedures must ensure that uniform processing temperature is achieved and maintained throughout the locations of the canned containers during the process. In this study, temperature distribution tests have been used as a means of verifying the temperature uniformity around the containers. These studies were carried out in two Egyptian canning plants in horizontal water-immersion and water-spray retorts under fully loaded operating conditions. Time-temperature data gathered were used as a guidance tool in improving temperature distribution and in optimizing the process schedule.

Cloud Computing In Kaust Library: Beyond Remote Hosting, Yi Yu

Yi Yu

Enterprise computing is the key strategic approach for KAUST to build its modern IT landscape. In such a strategic direction and technical environment, the library tries to establish library technology by catching new trends which help to make the library more efficient and sufficient. This paper focuses on the cloud computing development in the KAUST library, by using real world scenarios and first-hand experiences to describe what cloud computing means for KASUT library. It addresses the difficulties that were met by the library during the implementation process, how cloud computing affects the functional performance and work procedure of the library, …

Imitation Is The Sincerest Form Of Flattery: Software And User Interface Design In A Changing Patent Landscape, Megan Cardaman

Megan Cardaman

No abstract provided.

Biofuel Production In Ireland—An Approach To 2020 Targets With A Focus On Algal Biomass, Fionnuala Murphy

Fionnuala Murphy

Under the Biofuels Obligation Scheme in Ireland, the biofuels penetration rate target for 2013 was set at 6% by volume from a previous 4% from 2010. In 2012 the fuel blend reached 3%, with approximately 70 million L of biodiesel and 56 million L of ethanol blended with diesel and gasoline, respectively. Up to and including April 2013, the current blend rate in Ireland for biodiesel was 2.3% and for bioethanol was 3.7% which equates to approximately 37.5 million L of biofuel for the first four months of 2013. The target of 10% by 2020 remains, which equates to approximately …

Scheduling For A Small Satellite For Remote Sensed Data Collection, Donovan Torgerson, Christoffer Korvalnd, Jeremy Straub, Ronald Marsh

Jeremy Straub

Small satellites, such as CubeSats, serve as excellent platforms for the collection of data that can be supplied to a geographic information system. To serve this need, they require a robust and lightweight task scheduler due to their limited onboard power production capabilities as well as internal space restrictions. Because of these constraints, schedules must be optimized; however, the scheduling optimization process must be performed using limited processing (CPU) power.

Several considerations must be taken into account in order to make a scheduler for these systems. This poster highlights requirements such as inter-dependency of onboard systems, and limited windows of …

Roofsat: Teaching Students Skills For Software Development For Gis Data Collection And Other Activities, Jeremy Straub, Ronald Marsh, Donovan Torgerson, Christoffer Korvald

Jeremy Straub

Small Spacecraft provide an excellent platform for the collection of geospatial data. In order to enable the low-cost creation of small remote sensing space-craft in a university environment, a training pathway for students is required. The Realistic Operational Ob-ject for Facilitating Software Assessment and Testing (RoofSat) serves to provide students with experience developing software for a small satellite platform typi-cal of those used for remote sensing missions. It al-lows software to be tested with hardware that re-sponds in a similar manner to that found on the satel-lite for a fraction of the cost of development. This poster details the goals …

Educational Outcomes From The Openorbiter Small Spacecraft Development Program, Jeremy Straub

Jeremy Straub

The OpenOrbiter program [1] is developing a low-cost framework for the creation of space-craft by researchers and educators worldwide [8]. In addition to the technical objectives, ed-ucational assessment [2, 3] has also been a key focus. Students working on development of the spacecraft [4] were asked what types of benefits they sought from their participation [5]. The assessment of the attainment of these benefits is ongoing, in conjunction with continued development in pursuit of the crea-tion of a set of designs that can be used to build a spacecraft with a cost of under $5,000 [13] .

Openorbiter Ground Station Software, Alexander Lewis, Jacob Huhn, Jeremy Straub, Travis Desell, Scott Kerlin

Jeremy Straub

OpenOrbiter is a student project at the University of North Dakota to design and build a low cost1 and open-hardware / open-source software CubeSat2. The Ground Station is the user interface for operators of the satellite. The ground station software must manage spacecraft communications, track its orbital location , manage task assignment, provide security and retrieve the data from the spacecraft. This will be presented via a graphical user interface that allows a user to easily perform these tasks.

Testing And Integration Team Project Management, Tyler Leben, Jeremy Straub, Scott Kerlin

Jeremy Straub

The Testing and Integration Team plays an integral role in the development of the open source CubeSat known as Open Orbiter. Like any project, the Testing Team’s project can benefit from structure and management to effectively utilize it’s time and resources. CSCI 297 teaches the skills needed to turn a good idea into successful endeavor. By applying skills such as effective planning, setting milestones, dealing with changes and supervising to an actual project, Open Orbiter has transformed from a pipe dream to a real, obtainable goal. Doing this has turned learning about project management into more that just power points …

Openorbiter Payload Software, Tim Whitney, Kyle Goehner, Jeremy Straub, Scott Kerlin

Jeremy Straub

The Payload Software team is responsible for developing the image processing and task decomposition systems on the Open Orbiter satellite1. The image processing software performs operations to enhance the quality of the images collected by the onboard camera, specifically, mosaicking, which takes multiple images and stitches them together to make a larger image and super resolution, which takes multiple low resolution images of the same area to produce a higher resolution image2,3,4. The task decomposition part of the system decomposes tasks defined by the user into jobs that then get sent to the operating system to be performed. This system …

Openorbiter Combined Software Work Breakdown Structure, Jeremy Straub, Timothy Whitney, Tyler Leben, Kelton Karboviak, Zach Maguire, Christoffer Korvald, Scott Kerlin

Jeremy Straub

As part of CSCI 297, students created work breakdown structures for different areas of the OpenOrbiter project’s software groups. In CSCI 207, they learned about all aspects of project management via experiential learning. They acted as project management ‘consultants’ to the OpenOrbiter software teams. To facilitate the creation of the work breakdown structures, they interviewed team leads, attended team meetings and discussed current progress and needs with members of the teams. In some cases, they collected additional information from reference sources and/or spoke with other teams which would be the ‘customer’ of a particular area of the software system. These …

Work On A Software Defined Radio (Sdr) For A Cubesat-Class Spacecraft, Michael Wegerson, Jeremy Straub, Sima Noghanian

Jeremy Straub

A Software Defined Radio (SDR) will be used for OpenOrbit-er satellite to ground communications. The use of SDR al-lows for a smaller, more versatile radio then what a stand-ard hardware radio can provide; perfect for the unpredicta-ble environment Open Orbiter will be exposed to. Current implementation uses a simple $20 USB TV decoder for the receiver and the open-source program GNU Radio for soft-ware decoding. Broadband FM transmissions have been re-ceived and decoded successfully and on-going experimen-tation for receiving satellite communications are yielding promising results.

Project Management For The Openorbiter Operating Software Team, Kelton Karboviak, Dayln Limesand, Michael Hlas, Eric Berg, Christoffer Korvald, Jeremy Straub, Ronald Marsh, Scott Kerlin

Jeremy Straub

OpenOrbiter is producing a 1-U CubeSat spacecraft1 to facilitate the construction of low-cost2 spacecraft by others in the future. The Operating Software team is in charge of designing and creating the software that controls most of the CubeSat’s operations such as image capturing, storage management, and temperature sensing. The project management deliverables that we have worked on as a team are the Project Definition, Work Breakdown Structure, and the Project Schedule. The Project Definition defines exactly what our project team will be developing including, but not limited to, what the team is in charge of developing, what its not in …

Ground Station Software Team Project Management, Zach Maguire, Marshall Mattingly, Christoffer Korvald, Jeremy Straub, Scott Kerlin

Jeremy Straub

In CSCI 297 class we partake in learning the roles of software team leads and developers. With hands on activities that get us involved in what a real manager of a software team may do such as: defining a project, planning a project, developing a work breakdown structure, estimating the work, developing a project schedule, etc. This work is performed in the context of the OpenOrbiter project which seeks to build a low-cost spacecraft1 that can be produced with a parts budget of approxi-mately $5,0002 by schools worldwide. The ground station software team’s purpose within Open Orbiter project is to …

Software For Openorbiter, Christoffer Korvald, Jeremy Straub, Scott Kerlin, Ronald Marsh

Jeremy Straub

The software development effort for the OpenOrbiter project consists of four teams: operating software development, payload software development, ground station software development and testing. These teams are designing and developing the software required to create a turn-key spacecraft design1 which can be produced at a price point of under USD $5,000 by faculty, students and researchers world-wide2. Through this process, students are gaining valuable real-world experience3,4 in areas of indicated interest5. Each team is headed by a team lead who is responsible for conducting weekly meetings and organizing the activities of the team. During the Fall, 2013 semester, team leads …

Increasing National Space Engineering Productivity And Educational Opportunities Via Intrepreneurship, Entrepreneurship And Innovation, Jeremy Straub

Jeremy Straub

Research and educational efforts related to space engineering or requiring access to space face significant startup costs. The cost of developing a 1-U (10 cm × 10 cm × 11 cm) CubeSat from scratch can be approximately $250,000. Those buying a kit must pay amortized vendor development costs on a per-mission basis, creating a lower per-mission barrier. Kit users are also constrained by being unable to make changes to vendor subsystems without incurring substantial redevelopment costs or vendor charges. The Open Prototype for Educational NanoSats (OPEN) is changing this by providing freely available design documents for a 1-U CubeSat class …

Payload Software Design And Development For A Remote Sensing Small Spacecraft, Kyle Goehner, Christoffer Korvald, Jeremy Straub, Ronald Marsh

Jeremy Straub

Scheduling for a Small Satellite for Remote Sensed Data Collection

مشخصات کلی برنامه و سرفصل دروس دوره کارشناسی مهندسی مکانیک, Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.

سرفصل دروس دوره کارشناسی مهندسی مکانیک (گروه مهندسی مکنیک دانشگاه اصفهان), Dr Alireza Zolfaghari

Dr Alireza Zolfaghari

No abstract provided.

Structure And Properties Of Polypropylene-Nanoclay Composites, Raghavendra R. Hegde Dr

Raghavendra R Hegde Dr

The structure, morphology and mechanical properties of polypropylene-nanoclay composites with 1 to 15 wt.% nanoclay additives were investigated. Mixture of intercalated and exfoliated morphology was observed in nanocomposites. At higher weight percentage reinforcement (10–15 wt.%), up to 67 % improvement in tensile modulus is observed. At higher weight percentage, exclusion of clay additives at the boundary of spherulites was observed. This study illustrates that along with the thermodynamic driving force, spherulite formation also drives the ultimate morphology