Engineering Commons^™

Question Asking In Design Reviews: How Does Inquiry Facilitate The Learning Interaction?, Carlos C. M. Cardoso, Özgür Eriş, Petra Badke-Schaub, Marco Aurisicchio

Design Thinking Research Symposium

Design reviews are common educational practice in design disciplines, where students meet with instructors and other stakeholders to discuss the progress of a project they are engaged in. Such reviews are tightly coupled with project-based learning approaches in the design studio. A number of research studies have looked into various characteristics of instructor-student interactions during design reviews. In this study, we investigated the question-asking behavior of instructors, students and clients. We paid particular attention to high-level questions that relate to causal and generative reasoning. We analyzed 22 reviews involving six undergraduate industrial designers, who undertook design projects individually. We observed …

Concrete Carbonation And Chloride Resistance Under Initial Hot Water Curing, Guo Li, Xiaoling L. Li, Rongrong R. Wei, Jianmin M. Du, Xiaosuo S. Wu

International Conference on Durability of Concrete Structures

Three concrete mix proportions were designed and prepared, respectively, such as fly ash concrete (abbreviated as “FAC”) with 30% fly ash replacement ratio of cement, fly ash, and slag concrete (abbreviated as “FSC”) with each of 20% fly ash and slag replacement ratio and ordinary Portland cement concrete (abbreviated as “OPC”) for the research of carbonation and chloride resistance of concrete under different initial hot water curing. Specimens with precuring were put into 20°C water tank for curing firstly until a certain compressive strength of 14 MPa reached after demolding, while specimens without precuring were put into 40, 60, and …

Effect Of Intermolecular Potential On Compressible Couette Flow In Slip And Transitional Regimes, Andrew B. Weaver, A Venkattraman, Alina A. Alexeenko

School of Aeronautics and Astronautics Faculty Publications

The effect of intermolecular potentials on compressible, planar flow in slip and transitional regimes is investigated using the direct simulation Monte Carlo method. Two intermolecular interaction models, the variable hard sphere (VHS) and the Lennard-Jones (LJ) models, are first compared for subsonic and supersonic Couette flows of argon at temperatures of 40, 273, and 1,000 K, and then for Couette flows in the transitional regime ranging from Knudsen numbers (Kn) of 0.0051 to 1. The binary scattering model for elastic scattering using the Lennard-Jones (LJ) intermolecular potential proposed recently [A. Venkattraman and A. Alexeenko, “Binary scattering model for Lennard-Jones potential: …

Dimensions Of Creative Evaluation: Distinct Design And Reasoning Strategies For Aesthetic, Functional And Originality Judgments, Bo T. Christensen, Linden J. Ball

Design Thinking Research Symposium

The datasets provided as part of DTRS-10 all relate to what may broadly be labeled as ‘design critiques’ in an educational context. As such, we chose to center our theoretical analysis on the evaluative reasoning taking place during expert appraisals of the design concepts that were being produced by industrial design students throughout the design process. This overall framing for our research allowed us to pursue a series of research questions concerning the dimensions of creative evaluation in design and their consequences for reasoning strategies and suggestions for moving further in the creative progress. Our transcript coding and analysis focused …

Higher Order Thinking In Design Reviews, Craig D. Howard, Colin M. Gray

Design Thinking Research Symposium

In this study we have grappled with how higher order thinking emerges in early stage design reviews, using an undergraduate dyadic review and a graduate review in a small group setting. Narratives, gambits and justifications emerged through a content analysis as forms of higher order thinking common in the reviews. We then mapped these reviews onto common frames of reference employed by teachers and students. Results depicted stark differences in the linguistic routines of the two teachers and two different sets of students. Each focused their higher order thinking from a primarily different frame of reference. Conclusions relate to opportunistic …

Influences Of Feedback Interventions On Student Concept Generation And Development Practices, Seda Yilmaz, Shanna Daly

Design Thinking Research Symposium

Design teaching in many disciplines relies on feedback as a primary way for students and instructors to communicate. Our work focused on identifying feedback types in three different design disciplines (dance choreography, industrial design, and mechanical engineering) and analyzing how those feedback types encouraged students to take convergent or divergent paths with their design ideas. We then compared feedback types and encouragement of convergence or divergence across the three disciplines. Our findings showed many common types of feedback used across the three disciplines, regardless of variance in context and expectations. However, the findings also revealed a high frequency of feedback …

Describing Creativity In Design Across Disciplines, Llew Mann, Yasemin Tekmen Araci

Design Thinking Research Symposium

Creativity is an essential aspect of design thinking. Being able to describe creativity and creative processes is important for developing future designers. While much research has been undertaken describing creativity in design, there is very little investigating how creativity and creative thinking varies across disciplines. A coding scheme involving six separate codes was developed initially from the literature, refined and then used to describe how creativity and creative thinking was apparent in the DTRS 10 datasets of Junior Industrial Design, Graduate Industrial Design, Mechanical Engineering, Choreography and Entrepreneurship. Based on this analysis, conclusions on how creativity and creative thinking varied …

Analyzing The Display Of Professional Knowledge Through Interpersonal Interactions In Design Reviews, Neeraj Sonalkar, Ade Mabogunje, Larry Leifer

Design Thinking Research Symposium

Design review in an educational setting is an activity that helps educators in assessing students’ progress, and provides opportunities for students to learn how professionals in the field perceive and judge design-in-process, aka professional vision. In this study we analyzed design reviews to understand how interpersonal interactions between participants provides a context for the expression of professional knowledge. We identified episodes of professional vision interaction, and examined the interpersonal responses that constitute a design review meeting. The results of the analysis demonstrated how the context for the display of professional vision was co-created through interactions between the reviewer and the …

Exploring The Role Of Empathy In A Service-Learning Design Project, Nicholas D. Fila, Justin L. Hess

Design Thinking Research Symposium

The emergence of empathic design has inspired growing discourse on the role of empathy within design. While research on empathic design acknowledges the presence of empathy in design practice, little attention has been paid to its underlying mechanisms and how these mechanisms operate within the designer’s mind throughout the design process. In this study, we used the service-learning data set to develop an emergent empathic design model. We collected and analyzed any instances in which designers evidenced empathy for the end users. We kept empathy loosely defined due to the exploratory intent of this study and the recognition that empathy …

Strain Modulations As A Mechanism To Reduce Stress Relaxation In Laryngeal Tissues, Eric J. Hunter, Thomas Siegmund, Roger W. Chan

School of Mechanical Engineering Faculty Publications

Vocal fold tissues in animal and human species undergo deformation processes at several types of loading rates: a slow strain involved in vocal fold posturing (on the order of 1 Hz or so), cyclic and faster posturing often found in speech tasks or vocal embellishment (1–10 Hz), and shear strain associated with vocal fold vibration during phonation (100 Hz and higher). Relevant to these deformation patterns are the viscous properties of laryngeal tissues, which exhibit non-linear stress relaxation and recovery. In the current study, a large strain time-dependent constitutive model of human vocal fold tissue is used to investigate effects …

Performance Ranking Of Arterial Corridors Using Travel Time And Travel Time Reliability Metrics, Christopher M. Day, Stephen Remias, Howell Li, Michelle M. Mekker, Margaret L. Mcnamara, Ed Cox, Darcy M. Bullock

Lyles School of Civil Engineering Faculty Publications

No abstract provided.

Pre-College Engineering Participation Among First-Year Engineering Students, Noah Salzman, George Dante Ricco, Matthew Ohland

School of Engineering Education Graduate Student Series

In recent years, engineering content is increasingly appearing in the K-12 classroom. This growth can be attributed to increased acceptance of engineering as an area of study at the K-12 level, the growing inclusion of engineering content in state and national educational standards,and the growth of outreach activities intended to increase students’ interest in pursuing degrees and careers in engineering. As pre-college engineering programs grow, first-year engineering students are arriving in university engineering programs with significant prior exposure to engineering content and practices. Despite this growth, little research exists that explores the prevalence of participation in these programs or the …

Building Effective Partnership Networks When Working Internationally, Lindsey Anne Nelson

School of Engineering Education Graduate Student Series

Building Effective Partnership Networks In order to engage communities around the world, engineering educators must build networks with relevant community organizations. Many factors can compound building effective networks. Organizations have different philosophies about how engineers should undertake community engagement. These philosophies include convictions that engineers should develop low-cost products suitable for markets in marginalized communities, engineers should devise clever solutions to help people living in poverty meet basic needs, engineers must effectively respond to socio-cultural considerations when proposing solutions, and engineers should work to empower local artisans who have already begun seeking solutions to pressing problems.Additionally, university programs have to …

The Distribution Of Family-Friendly Benefits Policies Across Higher Education Institutions: A Cluster Analysis, Corey T. Schimpf, Joyce B. Main

School of Engineering Education Graduate Student Series

Cluster Analysis of Family-Related Benefits Policies across U.S. Academic Institutions Although the under-representation of women in science and engineering tenure-track faculty positions is often linked to the conflict between childcare responsibilities and the normative academic tenure-track pathway, previous studies have tended to focus on individual life choices,rather than the effects of institutional-level policies and structure. More recent research on work/life policies in higher education have pushed our understanding of how organizational structure and political climates at the department and institution levels influence the ability of faculty members to integrate career and life responsibilities. Many post-secondary institutions offer more generous work/life …

Analysis Of A Dual Scissored-Pair,Variable-Speed, Control Moment Gyroscope Driven Spherical Robot, Richard Chase

Wayne State University Dissertations

The objective of this research is to compare barycenter offset based designs of spherical robots to control moment gyroscope (CMG) based designs in order to determine which approach is most effective. The first objective was to develop a list of current state of the art designs in order to gain an overall understanding of what the obstacles in this area of research were. The investigation showed that barycenter offset designs can produce a low, continuous output torque, whereas CMG based designs can usually only produce a high, momentary output torque. The second objective was to develop a CMG based design …

Pedestrian Head Protection During Car To Pedestrian Accidents: In The Event Of Primary Impact With Vehicle And Secondary Impact With Ground, Vishal Gupta

Wayne State University Dissertations

Current regulations for assessing pedestrian safety use a simplified test setup that ignores many real-world factors. In particular, the level of protection is assessed using a free-motion headform impacting the vehicle's hood at a fixed angle. As such, this test setup does not capture the effect due to the vehicle front-end profile, nor does it comprehend injury due to a possible secondary impact of the pedestrian's head with ground. This thesis aims to numerically simulate vehicle to pedestrian crashes to develop knowledge that may suggest ways to improve safety above and beyond the regulatory tests. Inputs to the simulations include …

A Comprehensive Study Of Nonlinear Effects Of Coupling Materials In Ultrasound Infrared Imaging, Yuyang Song

Wayne State University Dissertations

Nondestructive Evaluation (NDE) is a multidisciplinary field of research, which is focused on the development of analysis and measurement technologies for the quantitative characterization of materials, components and structures. It is a key process used in product evaluation, troubleshooting for the quality assurance in industry. Sonic Infrared (IR) Imaging technology is a hybrid sensing and imaging technique, in which cracks in an object are caused to become visible in the infrared imaging through frictional heating associated with the application of a short pulse of low-frequency ultrasound. The technique uses pulses of ultrasonic excitation applied to a sample for a fraction …

The Application Of Graphene Films In Biosensing And Electrowetting, Xuebin Tan

Wayne State University Dissertations

In recent years, graphene has been found to possess extraordinary electronic, optical, mechanical and electrochemical properties. Graphene is optically transparent and mechanically flexible, and has high electron mobility and conductivity. In this thesis, we propose to investigate graphene's properties in the detection of biomolecules as well as the manipulation of biological samples. Graphene without defects has high charge carrier mobility and surface areas, which is ideal for biosensors. However, literature shows a lot of variations in the measurements using graphene biosensors. In addition, the surface functionalization of graphene in order to enhance the specificity has not been fully investigated yet. …

Study Of Chaotic Ultrasound And Frequency Sweep Excitations In Sonic Ir Nde Technology, Ding Zhang

Wayne State University Dissertations

Sonic Infrared (IR) Imaging Nondestructive Evaluation (NDE) technology has shown inherent advantages, such as fast detection for all direction and all dimension flaws, for both metal and composite materials. The purpose of this dissertation is to study and investigate the physical process of two most important methods, frequency sweep excitation and chaotic excitation, to improve the defect detection ability of Sonic IR technology.

The tool used in our study is known as finite element analysis (FEA). According to test process of Sonic IR technology, some special technologies were developed in FEA simulation, such as creating cracks with flat contact surfaces …

Effect Of Cetane Number And Volatility On Autoignition And Combustion Of Alternative Fuels And Their Surrogates, Ziliang Zheng

Wayne State University Dissertations

Diesel engine has become a popular choice for trucks, trains, boats, and most other heavy-duty applications. The inherent benefits of diesel engine are high thermal efficiency and specific power output, but there is a concern about high levels of engine-out NOx and particulate matter emissions, which is a major contributor in environment pollution. Moreover, concern about the crisis of crude oil reserves, increasing gas price, trade deficit, and homeland security enhances the interests in alternative fuels.

Unlike conventional diesel fuel, alternative fuels have wide range of properties, such as volatility, cetane number, density, viscosity and lower heating value, which influence …

Communication Protocol Design Considerations For Highway Vehicle Platoons And Enhanced Networked Robustness By Stochastic Dithers, Lijian Xu

Wayne State University Dissertations

Highway platooning of vehicles has been identified as a promising framework in

developing intelligent transportation systems. By autonomous or semi-autonomous

vehicle control and inter-vehicle coordination, an appropriately managed platoon can

potentially offer enhanced safety, improved highway utility, increased fuel economy,

and reduced emission. This thesis is focused on quantitative characterization of impact

of communication information structures and contents on platoon safety. By

comparing different information structures which combine front sensors, rear sensors,

and wireless communication channels, and different information contents such

as distances, speeds, and drivers' actions, we reveal a number of intrinsic relationships

between vehicle coordination and communications in …

Dual Delivery Systems Based On Polyamine Analog Benspm As Prodrug And Gene Delivery Vectors, Yu Zhu

Wayne State University Dissertations

Combination drug and gene therapy shows promise in cancer treatment. However, the success of such strategy requires careful selection of the therapeutic agents, as well as development of efficient delivery vectors. BENSpm (N1, N11-bisethylnorspermine), a polyamine analogue targeting the intracellular polyamine pathway, draws our special attention because of the following reasons: (1) polyamine pathway is frequently dysregulated in cancer; (2) BENSpm exhibits multiple functions to interfere with the polyamine pathway, such as to up-regulate polyamine metabolism enzymes and down-regulate polyamine biosynthesis enzymes. Therefore BENSpm depletes all natural polyamines and leads to apoptosis and cell growth inhibition in a wide range …

High-Performance Accelerometer Based On Asymmetric Gapped Cantilevers For Physiological Acoustic Sensing, Yating Hu

Wayne State University Dissertations

Continuous or mobile monitoring of physiological sounds is expected to play important role in the emerging mobile healthcare field. Because of the miniature size, low cost, and easy installation, accelerometer is an excellent choice for continuous physiological acoustic signal monitoring. However, in order to capture the detailed information in the physiological signals for clinical diagnostic purpose, there are more demanding requirements on the sensitivity/noise performance of accelerometers. In this thesis, a unique piezoelectric accelerometer based on the asymmetric gapped cantilever which exhibits significantly improved sensitivity is extensively studied. A meso-scale prototype is developed for capturing the high quality cardio and …

Non-Linear Robust Observers For Systems With Non-Collocated Sensors And Actuators, Constantine Mastory

Wayne State University Dissertations

Challenges in controlling highly nonlinear systems are not limited to the development of sophisticated control algorithms that are tolerant to significant modeling imprecision and external disturbances. Additional challenges stem from the implementation of the control algorithm such as the availability of the state variables needed for the computation of the control signals, and the adverse effects induced by non-collocated sensors and actuators.

The present work investigates the adverse effects of non-collocated sensors and actuators on the phase characteristics of flexible structures and the ensuing implications on the performance of structural controllers. Two closed-loop systems are considered and their phase angle …

Parameter Identification And Fault Detection For Reliable Control Of Permanent Magnet Motors, Dusan Vukosav Progovac

Wayne State University Dissertations

The objective of this dissertation is to develop new fault detection, identification, estimation and control algorithms that will be used to detect winding stator fault, identify the motor parameters and optimally control machine during faulty condition. Quality or proposed algorithms for Fault detection, parameter identification and control under faulty condition will validated through analytical study (Cramer-Rao bound) and simulation. Simulation will be performed for three most applied control schemes: Proportional-Integral-Derivative (PID), Direct Torque Control (DTC) and Field Oriented Control (FOC) for Permanent Magnet Machines. New detection schemes forfault detection, isolation and machine parameter identification are presented and analyzed. Different control …

Vehicle Lane Departure Prediction Based On Support Vector Machines, Alhadi Ali Albousefi

Wayne State University Dissertations

Advanced driver assistance systems, such as unintentional lane departure warning systems, have recently drawn much attention and R & D efforts. Such a system will assist the driver by monitoring the driver or vehicle behaviors to predict/detect driving situations (e.g., lane departure) and alert the driver to take corrective action. In this dissertation, we explored utilizing the nonlinear binary support vector machine (SVM) technique and the time series of vehicle variables to predict unintentional lane departure, which is innovative as no machine learning technique has previously been attempted for this purpose in the literature. Furthermore, we developed a two-stage training …

Jp-8 Surrogates For Diesel Engine Application: Development, Validation, And Cfd Simulation, Amit Shrestha

Wayne State University Dissertations

Recently, diesel engine cycle simulation has been acknowledged as an effective way for the development and performance optimization of compression ignition engines operating on a variety of fuels. The goal of this research was, therefore, to develop a JP-8 surrogate with a limited number of fuel components so that its chemical mechanism could be developed for its use with computational fluid dynamics (CFD) codes for enabling time-efficient diesel engine cycle simulation. In order to achieve this goal, a new approach was developed for the formulation of surrogate for compression ignition engine application. The development approach required the surrogate to match …

Development Of Silicon-Based Anodes And In-Situ Characterization Techniques For Lithium Ion Batteries, Jinho Yang

Wayne State University Dissertations

Development of lithium ion batteries (LIBs) with higher capacity has been booming worldwide, as growing concerns about environmental issues and increasing petroleum costs. The demands for the LIBs include high energy and power densities, and better cyclic stability in order to meet a wide range of applications, such as portable devices and electric vehicles. Silicon has recently been explored as a promising anode material due to its low discharge potential (<0.4 V) and high specific capacity (4200 mAh g^-1). The capacity of silicon potentially exceeds more than 10 times of the conventional graphite anode (372 mAh g^-1). However, the silicon anode experiences huge volume …

Management Of Plug-In Electric Vehicles And Renewable Energy Sources In Active Distribution Networks, Junhui Zhao

Wayne State University Dissertations

Near 160 million customers in the U.S.A. are served via distribution networks (DNs). The increasing penetration level of renewable energy sources (RES) and plug-in electric vehicles (PEVs), the implementation of smart distribution technologies such as advanced metering/monitoring infrastructure, and the adoption of smart appliances, have changed distribution networks from passive to active. The next-generation of DNs should be efficient and optimized system-wide, highly reliable and robust, and capable of effectively managing highly-penetrated PEVs, RES and other controllable loads. To meet new challenges, the next-generation DNs need active distribution management (ADM).

In this thesis, we study the management of PEVs and …

Building A Scalable And High-Performance Key-Value Store System, Yuehai Xu

Wayne State University Dissertations

Contemporary web sites can store and process very large amounts of data. To provide timely service to their users, they have adopted key-value (KV) stores, which is a simple but effective caching infrastructure atop the conventional databases that store these data, to boost performance. Examples are Facebook, Twitter and Amazon. As yet little is known about the realistic workloads outside of the companies that operate them, this dissertation work provides a detailed workload study on Facebook's Memcached, which is one of the world's largest KV deployment. We analyze the Memcached workload from the perspective of server-side performance, request composition, caching …