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Articles 1 - 19 of 19
Full-Text Articles in Engineering
A Vertical Axis Rotor For Wave Energy Conversion, Yingchen Yang, Joab Soto, Francisco Salazar
A Vertical Axis Rotor For Wave Energy Conversion, Yingchen Yang, Joab Soto, Francisco Salazar
Mechanical Engineering Faculty Publications and Presentations
The present work augments vertical-axis unidirectional wave energy converter (WEC) designs with a new approach. The enabling technique is the hydrodynamic design of a special rotor, which consists of a series of uniquely shaped blades in a certain formation. Specifically, individual blades are realized by revolving a two-dimensional symmetric hydrofoil about its chord line. Then the blades are arranged around a vertical shaft in a desired formation to form the rotor. When driven by an approaching flow through interaction, the rotor naturally rotates about the vertical shaft in a predefined direction. The approaching flow could be from any spatial direction, …
Pulsed Laser Beam Welding Of Pd43Cu27Ni10P20 Bulk Metallic Glass, Ling Shao, Amit Datye, Jiankang Huang, Jittisa Ketkaew, Sung Woo Sohn, Shaofan Zhao, Sujun Wu, Yuming Zhang, Udo D. Schwarz, Jan Schroers
Pulsed Laser Beam Welding Of Pd43Cu27Ni10P20 Bulk Metallic Glass, Ling Shao, Amit Datye, Jiankang Huang, Jittisa Ketkaew, Sung Woo Sohn, Shaofan Zhao, Sujun Wu, Yuming Zhang, Udo D. Schwarz, Jan Schroers
Electrical and Computer Engineering Faculty Publications
We used pulsed laser beam welding method to join Pd43Cu27Ni10P20 (at.%) bulk metallic glass and characterized the properties of the joint. Fusion zone and heat-affected zone in the weld joint can be maintained completely amorphous as confirmed by X-ray diffraction and differential scanning calorimetry. No visible defects were observed in the weld joint. Nanoindentation and bend tests were carried out to determine the mechanical properties of the weld joint. Fusion zone and heat-affected zone exhibit very similar elastic moduli and hardness when compared to the base material, and the weld joint shows high …
Board # 113 : Eegrc Poster: Characterizing Trade-Off Decisions In Student Designers, Molly Goldstein
Board # 113 : Eegrc Poster: Characterizing Trade-Off Decisions In Student Designers, Molly Goldstein
School of Engineering Education Graduate Student Series
Although design and decision-making are intertwined for practicing engineers, students from elementary school through college and graduate schools are not taught to think through uncertain situations (Howard, 2007) in which information is limited or outcomes are not guaranteed. Trade-offs are a complex element of decision, as the decision-making weighs possible outcomes against their respective costs (Otto &Antonsson, 1991). Although much is understood about how professional designers’ behaviors as compared to novice designers and students (Atmen et al., 2007; Crismond & Adams, 2012; Cross, 2003), there is little research regarding making trade-off decisions from middle school and high school to college. …
Benefits From Constructability Reviews, Nikiforos Stamatiadis, Roy Sturgill, Kiriakos Amiridis
Benefits From Constructability Reviews, Nikiforos Stamatiadis, Roy Sturgill, Kiriakos Amiridis
Civil Engineering Faculty Publications
Constructability review is a process used during project design to infuse construction knowledge into the design process. There is industry impetus encouraging early construction involvement in project development. State transportation agencies often have to abide by legislation restricting these procurement methods leaving construability review as the only opportunity for early construction involvement. Staffing and budgetary constraints lead to state transportation agencies being very cautious in the practices and processes they implement that seemingly lie outside the main missions of project development and delivery. Without straightforward and documented savings of constructability review processes, these methods may also be eliminated. After streamlining …
Engaging Children In Engineering Design Through The World Of Quadcopters, Greg J. Strimel, Scott R. Bartholomew, Eunhye Kim
Engaging Children In Engineering Design Through The World Of Quadcopters, Greg J. Strimel, Scott R. Bartholomew, Eunhye Kim
Faculty Publications
The interest in engineering education for K-12 students has been rising (Carr, Bennett IV, & Strobel, 2012; Strimel, Grubbs, & Wells, 2016), and the importance of engineering education is discussed as early as the elementary school level (Hegedus, 2014). Petroski (2003) claims that children are ready to learn engineering because their play activities are similar to engineering and design activities, such as making, moving, and rearranging things. Studies have examined how elementary school students perceive engineering or engineers (Cunningham, Lachapelle, & Lindgren-Streicher 2005) and found that elementary-aged students associated engineering with repairing, installing, driving, constructing, and improving machines and devices. …
Designing The Technological World Through Biomimicry, Emily Yoshikawa, Greg J. Strimel, Scott R. Bartholomew
Designing The Technological World Through Biomimicry, Emily Yoshikawa, Greg J. Strimel, Scott R. Bartholomew
Faculty Publications
Scientific discoveries are a driver for advancing our technological world (ITEA/ITEEA; 2000/2002/2007). As more knowledge is acquired through scientific inquiry, people can better design and develop technological inventions and innovations (Knowles, Kelley, & Hurd, 2016). In turn, these novel technologies can aid in making new scientific discoveries, thus driving an ongoing cycle of technological advancement. However, in the process of designing and advancing our technological world, people can turn to the study of life and its phenomena to inspire and inform their designs. Nature is functional as well as beautiful. As we study the phenomena or functions of living organisms …
Shear Driven Micro-Fluidic Pump For Cardiovascular Applications, Nihad E. Daidzic
Shear Driven Micro-Fluidic Pump For Cardiovascular Applications, Nihad E. Daidzic
Aviation Department Publications
A valveless shear-driven micro-fluidic pump design (SDMFP) for hemodynamic applications is presented in this work. One of the possible medical and biomedical applications is in-vivo hemodynamic (human blood circulation) support/assist. One or more SDMFPs can be inserted/implanted into vascular lumens in a form of a stent/duct in series and/or in parallel (bypass duct) to support blood circulation in-vivo. A comprehensive review of various micro-pump designs up to about mid 2000’s is given in [1,2]. Many of micropump designs considered are not suitable for in-vivo or even in-vitro medical/biomedical applications.
Operating principles, design, and SDMFP features are given in [3]. A …
A Vertical Axis Wave Turbine With Hydrofoil Blades, Yingchen Yang, Isaiah Diaz, Sergio Soto Quintero
A Vertical Axis Wave Turbine With Hydrofoil Blades, Yingchen Yang, Isaiah Diaz, Sergio Soto Quintero
Mechanical Engineering Faculty Publications and Presentations
This work discusses a new wave energy converter (WEC) design that, when deployed in waves, performs unidirectional rotation about a vertical shaft. The uniqueness of this new WEC design is on utilizing omnidirectional water flow generated by waves to drive a rotor to perform unidirectional rotation about a vertical axis. This unique feature circumvents the frequency-dependent issue of common WECs, and eliminate realignment needs to cope with dynamically changing wave propagation directions. The key component of the WEC is a rotor, which has a vertical shaft with a number of blades mounted to it. Each blade has a hydrofoil-shaped cross …
Persuasive Systems Design Features In Promoting Medication Management For Consumers, Khin Than Win, Judy Mullan, Sarah Katherine Howard, Harri Oinas-Kukkonen
Persuasive Systems Design Features In Promoting Medication Management For Consumers, Khin Than Win, Judy Mullan, Sarah Katherine Howard, Harri Oinas-Kukkonen
Faculty of Engineering and Information Sciences - Papers: Part B
Medication safety continues to be a growing concern in the healthcare industry. Providing medication information to consumers and supporting self- management would help to reduce medication errors and to increase medication adherence. This paper reviews the persuasive systems design features used in current medication management applications for consumers. A database search was conducted to identify relevant articles, which were then reviewed using the Persuasive Systems Design model as a framework for analysis. The results highlighted the applicability of these features for the medication management information systems available to consumers. Primary task support and Dialogue support categories were highly cited in …
Design Of Geopolymer Concrete With Ggbfs At Ambient Curing Condition Using Taguchi Method, Muhammad N. S Hadi, Nabeel Farhan, M Neaz Sheikh
Design Of Geopolymer Concrete With Ggbfs At Ambient Curing Condition Using Taguchi Method, Muhammad N. S Hadi, Nabeel Farhan, M Neaz Sheikh
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, the Taguchi method has been used to design optimum mix proportions for geopolymer concrete with ground granulated blast furnace slag (GGBFS) as aluminosilicate source at ambient curing condition. The influences of binder content, alkaline activator to binder content (Al/Bi) ratio, sodium silicate to sodium hydroxide (SS/SH) ratio, and sodium hydroxide (SH) concentration on the geopolymer concrete were investigated. A total of nine mix designs were evaluated. It was found that specimens with a binder content of 450 kg/m3, Al/Bi ratio of 0.35, SS/SH ratio of 2.5, and SH concentration of 14 M produced the highest …
Design And Implementation Of A Novel Web-Based E-Learning Tool For Education Of Health Professionals On The Antibiotic Vancomycin, Stuart Bond, Shelley P. Crowther, Suman Adhikari, Ping Yu, Jay P. Bochard, Craig S. Boutlis, Wilfred W. Yeo, Spiros Miyakis
Design And Implementation Of A Novel Web-Based E-Learning Tool For Education Of Health Professionals On The Antibiotic Vancomycin, Stuart Bond, Shelley P. Crowther, Suman Adhikari, Ping Yu, Jay P. Bochard, Craig S. Boutlis, Wilfred W. Yeo, Spiros Miyakis
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Impact Of Structural Design Solutions On The Energy And Thermal Performance Of An Australian Office Building, Mehdi Robati, Georgios Kokogiannakis, Timothy J. Mccarthy
Impact Of Structural Design Solutions On The Energy And Thermal Performance Of An Australian Office Building, Mehdi Robati, Georgios Kokogiannakis, Timothy J. Mccarthy
Faculty of Engineering and Information Sciences - Papers: Part B
Concrete is a heavyweight construction material whose high thermal mass could increase the thermal storage capacity of a building envelope and in turn affect indoor thermal comfort. Selecting an appropriate method for concrete construction and form could also affect the total energy performance and thermal comfort of a building, a fact that is often overlooked by structural engineers. This study presents the results of energy simulations of the potential impact that concrete construction forms, in particular two slab types, and structural materials have on the energy consumption of archetypal commercial office buildings in five major Australia cities (Sydney, Melbourne, Canberra, …
Reconceptualizing Pedagogical And Curricular Knowledge Development Through Making, Steven Greenstein, Justin Olmanson
Reconceptualizing Pedagogical And Curricular Knowledge Development Through Making, Steven Greenstein, Justin Olmanson
Department of Teaching, Learning, and Teacher Education: Faculty Publications
While making is typically tethered to narratives of entrepreneurship and business, it can provide a gateway to meaningful interaction and deepened understanding of both content and pedagogy. In this article we provide descriptions of two courses—one each at the pre-service and in-service levels—that engage teachers in making and design practices that we hypothesized would inform their pedagogical and curricular thinking. With a focus on the design of new tools to support teaching and learning through the use of human-centered design practices and digital fabrication technologies, these courses have teachers exploring at the intersection of content, pedagogy, and making. Specifically, they …
Design And Engineering Of Water-Soluble Light-Harvesting Protein Maquettes, Goutham Kodali, Joshua A. Mancini, Lee A. Solomon, Tatiana V. Episova, Nicholas Roach, Christopher Hobbs, Pawel W. Wagner, Olga Mass, Kunche Aravindu, Jonathan E. Barnsley, Keith C. Gordon, David L. Officer, P. Leslie Dutton, Christopher C. Moser
Design And Engineering Of Water-Soluble Light-Harvesting Protein Maquettes, Goutham Kodali, Joshua A. Mancini, Lee A. Solomon, Tatiana V. Episova, Nicholas Roach, Christopher Hobbs, Pawel W. Wagner, Olga Mass, Kunche Aravindu, Jonathan E. Barnsley, Keith C. Gordon, David L. Officer, P. Leslie Dutton, Christopher C. Moser
Australian Institute for Innovative Materials - Papers
Natural selection in photosynthesis has engineered tetrapyrrole based, nanometer scale, light harvesting and energy capture in light-induced charge separation. By designing and creating nanometer scale artificial light harvesting and charge separating proteins, we have the opportunity to reengineer and overcome the limitations of natural selection to extend energy capture to new wavelengths and to tailor efficient systems that better meet human as opposed to cellular energetic needs. While tetrapyrrole cofactor incorporation in natural proteins is complex and often assisted by accessory proteins for cofactor transport and insertion, artificial protein functionalization relies on a practical understanding of the basic physical chemistry …
Cockpit In The Systems Engineering Lenses, Aysen K. Taylor, Charles B. Keating, T. Steven Cotter
Cockpit In The Systems Engineering Lenses, Aysen K. Taylor, Charles B. Keating, T. Steven Cotter
Engineering Management & Systems Engineering Faculty Publications
The commercial transport aircraft of today vary greatly from early aircraft in regards to how they are controlled and the feedback provided from the machine to the human operator. Automation has improved operational precision and efficiency but at the cost of providing less feedback. Pilots are the last line of defense and current technology cannot provide the human ability to solve novel problems for which no computer logic can be written. The automated cockpits of today have may sub-components that interact in a manner often opaque and unpredictable when a sensor or sub-component fails or even in situations where no …
The Effect Of Nursing Participation In The Design Of A Critical Care Information System: A 4 Case Study In A Chinese Hospital, Yanhong Qin, Ranyun Zhou, Qiong Wu, Xiaodi Huang, Xinli Chen, Weiwei Wang, Xun Wang, Hua Xu, Jing Zheng, Siyu Qian, Changqing Bai, Ping Yu
The Effect Of Nursing Participation In The Design Of A Critical Care Information System: A 4 Case Study In A Chinese Hospital, Yanhong Qin, Ranyun Zhou, Qiong Wu, Xiaodi Huang, Xinli Chen, Weiwei Wang, Xun Wang, Hua Xu, Jing Zheng, Siyu Qian, Changqing Bai, Ping Yu
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
A Robust Force Controller Design For Series Elastic Actuators, Emre Sariyildiz, Haoyong Yu
A Robust Force Controller Design For Series Elastic Actuators, Emre Sariyildiz, Haoyong Yu
Faculty of Engineering and Information Sciences - Papers: Part B
A Series Elastic Actuator (SEA) is designed by placing a passive compliant element between a conventional stiff actuator and link. The intrinsically compliant mechanical structure provides several superiorities, e.g., safety, energy efficiency, high force fidelity, low cost force measurement, high transparency, etc., in advanced robot applications, such as humanoids, quadrupeds and exoskeletons. However, the motion control problem of an SEA is more complicated than that of a conventional stiff actuator due to its higher order dynamics. This paper proposes a novel Active Disturbance Rejection (ADR) based robust force controller for SEAs by combining Differential Flatness (DF) and Disturbance Observer (DOb) …
Collaboration And Co-Location: Making Sense Of Digital Design For Early Childhood Games, Holly Tootell, Mark Freeman, Grant N. Ellmers, Anthony D. Okely
Collaboration And Co-Location: Making Sense Of Digital Design For Early Childhood Games, Holly Tootell, Mark Freeman, Grant N. Ellmers, Anthony D. Okely
Faculty of Engineering and Information Sciences - Papers: Part B
The relationship between physical activity and educational and health outcomes is well known. As the significance of digital devices continues to increase, along with societal reliance on them, the provision of programs that draw technology and physical activity together is increasingly important. The recent Pokemon phenomenon is an example of a digitally-driven physical activity that appealed to both adults and children alike. This paper reports on the proof of concept phase of a development that brings to digital life a physical activity program designed specifically for preschoolers. The aim of the JumpStart project was to find a way to engage …
Review On Design And Control Aspects Of Robotic Shoulder Rehabilitation Orthoses, Aibek Niyetkaliyev, Shahid Hussain, Mergen Hmcgill University, Ghayesh, Gursel Alici
Review On Design And Control Aspects Of Robotic Shoulder Rehabilitation Orthoses, Aibek Niyetkaliyev, Shahid Hussain, Mergen Hmcgill University, Ghayesh, Gursel Alici
Faculty of Engineering and Information Sciences - Papers: Part B
Robotic rehabilitation devices are more frequently used for the physical therapy of people with upper limb weakness, which is the most common type of stroke-induced disability. Rehabilitation robots can provide customized, prolonged, intensive, and repetitive training sessions for patients with neurological impairments. In most cases, the robotic exoskeletons have to be aligned with the human joints and provide natural arm movements. This is a challenging task to achieve for one of the most biomechanically complex joints of human body, i.e., the shoulder. Therefore, specific considerations have been made in the development of various existing robotic shoulder rehabilitation orthoses. Different types …