measure the viscosity. The viscosity of theoriginal mixture is approximately 40 centi-poise. After reduction, the viscosity is approximately500 centi-poise. The solution is then poured into a syringe and a tube is attached to the bluntneedle of the syringe. Another needle tip is placed on the end of the tubing. In step two, the syringe is placed into a syringe pump. An alligator clip from the positivevoltage of a high voltage power supply is attached to the needle tip. The negative or ground ofthe power is attached to a plate that fabric is clamped on. Figure 1 illustrates an XYZ table, theelectrified needle tip and the S2 fiberglass fabric on the mounting plate. Equipment such as theHigh Voltage power supply, the syringe pump which is
lasting two weeks. It is wellknown that laboratories and demonstrations add information and interest to science andengineering courses 1. Laboratory exercises provide a great opportunity to expose students to‘real materials’ in an active learning environment. Such exercises also provide a mean to satisfyimportant learning objectives and the ability to conduct experiments, analyze and interpret data 2.Our program centers on a series of interactive lectures in a lab setting, with relevant experimentsimmediately following. There are extensive pre-experiment discussions and comparison withactual results in post-experiment discussions. These are supplemented by lab tours of graduateand faculty research labs and interactions with those researchers, who
. Approximately 210students take the course each year. The course is broken into three sections – structure ofmaterials, mechanical properties of materials, and microstructure of materials – with about 75%of the lecture time devoted to metallic materials and about 15% devoted to plastics and ceramics.The remaining 10% is allocated for three in-class tests. A typical course/lab breakdown is givenin Table 1. There is no follow-on course, and Materials Science is not a pre-requisite for anyother ME department courses. With limited time for in-class instruction and a student populationthat saw Materials Science as a terminal course, something needed to be done to make thestudents participate more actively in their learning and to give clear value to the
sessions. The first, 75 minuteslong, was comprised of the following parts: ̇ Short Likert-scale/open-ended pre-survey to assess students’ familiarity with computers and their views on the course. ̇ Pre-interview about grain growth and related phenomena, in which students were asked the following questions: 1. What is a grain? 2. What is a grain boundary? 3. What is grain growth? 4. What is the driving force for grain growth? 5. What is the driving force for recrystallization? 6. What is the effect on grain growth of dispersed precipitates? Why? 7. In grain
discuss the attributes of our curriculum design and provide some dataon its effectiveness to date.OVERVIEW OF CURRICULUMLike many engineering curricula, ours begins with a primary focus on general education (math,science, liberal arts). As shown in Figure 1, roughly 25% of the units in the curriculum are in the area of liberal arts, 35% in year→ engineering support courses (math, science, engineering science) and the 1 2 3 4 remainder in materials engineering ~35% engineering ~40% major (MATE
good use of time from a learning perspective. The typical amount of time spent onthe project was between three to six hours. The results of the anonymous poll are summarized inTable 1.Table 1. Anonymous Poll Results for ME328 studentsPoll questionSince the podcast project is 47 replied 'keep it' 4 replied 'change it' 1 replied 'drop it'new, do you think it should bekept, changed or droppedfrom next year's project optionlist?Was the project (Podcast, 44 replied 'yes' 8 replied 'no'Poster, Website) a good use ofyour time, from a learningperspective?Approximately how much 6 replied 25 replied 21 repliedtime did you spend on the '< 3 hrs' '3 to 6 hrs
seed was planted in 1959 by Richard Feynman when he postulated that it was possible to write“the entire 24 volumes of the Encyclopedia Brittanica on the head of a pin.” 1 The idea laydormant until the early 1980s, when technology made it practical to visualize and evenmanipulate individual atoms on surfaces. The result was a new realm of science andtechnology—the nano-realm. The nanoscale is between the microscale and the atomic scale.With respect to lengths, the nanoscale ranges between about 1 and 100 nanometers; it mayextend into the hundreds of nanometers.Being able to understand and manipulate objects and functions at this scale has extraordinarypotential for two general reasons. The first may be obvious. Feynman’s proposal is an
, polymeric and biomaterials with silicon electronics. The conventional top downmethodology for miniaturization has advanced to nanoscales, while bottom up and selfassembling methodologies at molecular and atomistic scales are evolving.The integrated circuit technology began with using essentially a few materials – doped silicon,silicon dioxide and aluminum in 1960s. Subsequently more and more materials have beenintegrated following extensive materials research. Figure 1 shows that today’s semiconductor Page 12.1037.2technology spans a much larger part of the periodic table. The elements manifest theirintegration through syntheses of materials with
progresses. This important feature enablesstudents to build increasingly sophisticated life-long learning skills throughout the semester bygaining increased control over their learning strategies and educational process.Each project has accompanying constraints, deliverables, and assessments. Although the broadlearning objectives are the same for everyone, each student team studies a different topic or Page 11.695.4material system. For example, to attain the Project 1 goal of connecting composition and Table I. Materials science course projects and learning objectives. Theme and Allotted Time Goals and
teachinglevels: Level 1 introduces environmental factors such as embodied energy, CO2 creation, andrecyclability for around 60 of the most common materials. More materials and environmentalparameters are added at Level 2. The third and highest level, Level 3, has over 70 properties forover 3,000 materials allowing material optimization for real designs on economic,environmental, and technical grounds. The method is illustrated with case studies.The ProblemThe nature of the problem is brought into focus by examining the materials lifecycle, sketched inFigure 1. Ore and feedstock are processed to give materials; these are manufactured intoproducts that are used, and, at the end of their lives, disposed, a fraction perhaps entering arecycling loop, the
, modification, handling, andutilization of organic and inorganic powders, in both dry and wet conditions. Particulate systemsas a core technology impact a number of industries including advanced materials [1], chemical,energy, environmental [2], mineral, agricultural, pharmaceutical, biotechnology, and foodprocessing. With the emergence of nanoscience and nanotechnology, particles of increasinglysmaller size are being synthesized for applications as catalysts, coatings, advanced ceramics [3,4],pharmaceuticals [5,6] and medical applications. The size and size distribution of these particles areof great importance to the end user because they affect key colloid properties such as rheology,film gloss, surface area and packing density. Before the invention
to the success of this activity is gained from two surveys, i.e., 1) to determine if they had the qualities to be an engineer and 2) to see change in knowledge of the engineering profession (a before and after look). Overall, as all participants reflect on this activity, positive feedback from the girls is sensed by the excitement in the room as they share their design projects with others, enthusiasm of our WNEC engineering students as they leaving saying they would like to help again next year, and parents and Girl Scout leaders leaving the activity with smiles, and positive comments.II. Objective The objective of this yearly outreach program is to educate young girls in 4th through 6th grade about the engineering profession. Our
engagement and the importance of prior knowledge in the learning process and thathave been shown to enhance student learning outcomes.6 Web-deployed assessments and use ofclickers in the classroom offer the potential to implement key elements of effective formativeassessment:1 gathering information about learners’ current states of understanding and makingadjustments in instruction to close the gap between those states of understanding and learninggoals.This paper is part of an ongoing inquiry into use of educational technologies to facilitateformative assessment in large-enrollment offerings of Introduction to Materials Science.Previous work explored students’ reactions to assessment activities and their perceptions oflearning gains.7,8 Students
observed interacting with the SPM exhibit prototype as well as an additionalexhibit on liquid crystals10. The results of the visitor behavior observations revealed a strongdifference in engagement among different age groups. For both exhibit prototypes, children andteen visitors were more likely to use the interactive features, while adults were more likely tosimply attend to the text of the exhibit (Figure 1). Our results show that the interactive featuresof our museum exhibits especially interested younger visitors, suggesting that interactive Page 11.1110.3activities and materials could capture students’ attention in the classroom. Post-use
. The presentation of topics by engineering topic rather thanmaterials class is termed an “integrated approach.”At this point, the instructor may be asking“How do I fit this all into a one-semester Table 1 Example redistribution of materialscourse?” Obviously, something must be science topics to include biologics.sacrificed. Which topics get reduced (orremoved) can be discipline specific. For Typical Revisedexample, for chemical engineers, coverage ofpolymers and biologics is important enough to Metals/Alloys 40% 25%eliminate some coverage of metals and alloys.Certainly metals and alloys are important Ceramics/Glasses 25% 25%from a
to school and received an MS in Mathematics Education and an Ed.D. in Instruction and Curriculum at the University of Rochester while he worked 1/2 time teaching introductory computer science courses at SUNY-Brockport. He also earned a Graduate Certificate in Interactive Media Design from RIT at about the same time he completed his doctoral dissertation on the topic of "Electronic Texts as Alternative to Traditional Textbooks." He finished his Doctorate in Education just when web browsers were becoming popular so he marshaled all these experiences and brought them with him to RIT’s Distance Learning program. He was instrumental in converting the RIT distance learning program to
reinforced plastics used for civil infrastructure. Thismodule covers mechanical properties, diffusion, polymers, and composites. The fourth moduledeveloped teaches students about crystal structure, mechanical properties of metals, and phasediagrams in the context of biomaterials (self-expanding stents made from shape memory alloys).Each classroom module contains background resources for faculty, lecture notes, active in classexercises, homework problems, and an open ended, team project.BackgroundMost engineering programs require their students to take an introductory materials class. Thisincludes community colleges with engineering transfer programs. In the U.S. alone, the“Introduction to Materials” course enrolls over 50,000 students a year.1 The
an application of matrix algebra. We have recently added a computationalcomponent to the lab: use of density functional theory (using the program Plane Wave Self-Consistent Field, PWSCF) to calculate the elastic constants and compare to the measured values.The free software is part of the Quantum-ESPRESSO package.1 The use of DFT also allows thedemonstration of the nature of the approximations that must be made to solve the many-bodySchrödinger equation for electrons in a condensed phase. This follows discussions in the firsthalf of the course about the hydrogen atom and how extending such calculations requireapproximations due to the many-body problem.Introduction and MotivationMaterials Scientists and Engineers are increasingly using
provide a means to satisfy important learningobjectives, such as the application of material discussed in lectures (“an ability to applyknowledge of math, science and engineering”) and the ability to conduct experiments, analyzeand interpret data.1 We have developed a series of experiments which we believe meet theseobjectives and add an element of fun to the introductory materials course. These exercises weredeveloped in the process of teaching, experimenting with materials, discussing the course withstudents and colleagues, and making many trips to the local hardware store and chemistrystockroom. We are certain that many of these activities are not unique to our curriculum, and weacknowledge inspiration from others using similar hands-on
complete the many tasks neededfor such a comprehensive transformation. First, recent research studies have shown that studentsdo understand more about what they are studying if the course environment includes active andconceptual learning opportunities 1-13. For example, the National Research Council (NRC)completed an in-depth study and reported on successful learning strategies 1. This report and thework of others1-13 show that it is important to build upon the “conceptual and cultural knowledgethat students bring with them to the classroom”.1 Second, students often view IntroductoryMaterials Engineering courses as difficult, abstract and less than exciting. It is usually the firstcourse in which they must integrate what they have learned in
fluid to solidalmost instantaneously, the rheology of the material reverting to its original state uponremoval of the field.“Response, which takes only milliseconds, is in the form of a progressive gelling thatis proportional to field strength. With no field present, the fluid flows as freely ashydraulic oil”.1 As a result, MR technology provides fast and infinitely variablecontrol of energy dissipation of industrial and automotive devices.2 This change ofstate has the potential to revolutionize the control aspects of vibration and theresponsiveness of hydraulic power transmission systems. “The application ofmagneto-rheological fluids for damping is a unique and novel approach to an age-oldproblem”. 3
supersaturated.(Increasing concentrations are illustrated by the increasing density of the dots in the diagrams.The dots represent the dissolved sugar molecules. The undissolved sugar in beaker B is shown asa darkened area at the bottom of the beaker.) (Correct answers are in bold)In the questions below, please circle the correct answer and then give an explanation.I.1. Solution A is (saturated, unsaturated, supersaturated). PLEASE EXPLAIN!I.2. Solution B is (saturated, unsaturated, supersaturated).PLEASE EXPLAIN!I.3. Solution C is (saturated, unsaturated, supersaturated).PLEASE EXPLAIN! Page 12.540.6The second question shown below is from the MCI and
to Architectural, Civil, and Mechanical Engineering Technologystudents. Students in the ARET, CET, and MET programs at IPFW must earn a C- or better inStrength in order to pass the course. Table 1 shows the percentage of students needing to repeatStrength due to low grades, along with the repeat rate in all other MET courses. 1 Based on a 20%mean repeat rate, Strength is apparently the hardest course in the curriculum. The table does notinclude students who withdrew from courses because of low grades. When withdrawals areincluded, the repeat rate in Strength runs between 18% and 35%. Page 23.673.2 Table 1: Percentage of students in each
harmonic loadings is employed for this purpose.Proportional loading is defined as any state of time varying stress where the orientation of theprincipal stress axes does not change with respect to the axis of the shaft. Non-proportionalloading is defined as any state of time varying stress where the orientation of the principal axes Page 23.678.2changes with respect to the shaft axis. The students study the “proportionality” of loadings usingMohr’s circle for four specific cases for a shaft under combined bending and torsion, which are: 1. Time harmonic bending moment and time harmonic torsion that are in phase. 2. Time harmonic bending
develop new curricula, certifications, and degrees1. One way that this needfor energy curricula is being addressed is through programs in energy storage for stationary andvehicular applications2-5.The School of Engineering at Grand Valley State University is preparing students to compete forjobs in the advanced energy storage (AES) field by developing a three-course certificate inadvanced energy6. To complete this certificate, students may choose three of the following fourcourses: 1) Electrochemistry, 2) Alternative Energy Systems and Applications, 3) Materials forEnergy Storage, and 4) Electric/Hybrid Vehicle Battery Systems. This certificate is available toundergraduate engineering students earning a Bachelor of Science in Engineering (B.S.E
degree program students at BVDU. Self-Study I Self-Study II 1. Modeling and Simulation of Nanosystems 8. Silicon Nanostructures & Carbon Nanotubes 2. Synthesis and Design Nanoscale Products Based Nanoelectronics 3. Emerging Trends in Consumer Nano Products 9. Crystallinity and Structure of Nanomaterials 4. Applications of Nanotechnology in Food and 10. Nanoscale Mechanics of Materials Agriculture 11. Quantum Theory of Solid 5. Finite Element Methods for Nanoscale 12. Economic Principles of Nanotechnology Structures Management
passivecontent reception.1 2 A common theme of these “flipped classroom” approaches is that studentscomplete activities before class focused on content delivery—assigned readings or watching pre-recorded lectures, for instance—freeing the instructor to spend class time working with studentsin various ways that emphasize active participation.3From an instructor’s point of view, the flipped classroom is appealing because it provides astimulating classroom environment. Such perceptions, however, cannot show whether such achange in methodology is actually more effective than traditional lectures. In the fall of 2011 theresearch team embarked on the present study designed to provide both quantitative data onstudent learning gains and student perceptions of
- presentations.IntroductionPOGIL is the acronym for Process Oriented Guided Inquiry Learning and was developed at the Franklinand Marshall College to teach general chemistry [1]. Research results in the area of cognitive science onhow people learn are the basis of POGIL [2]. This basis consists of 1) formation of a cooperative learningenvironment where students become interdependent and supportive of one another in understanding classmaterial 2) questions that provoke students to think about new class material based upon previousknowledge that they may have. This is called “Guided Inquiry.” It is significant as it providesopportunities for students to integrate new information with old and resolve misconceptions that they mayhave and finally 3) students think about their
, talking and showing young people what it is thatyour work can mean, and what it means to you […] to thinking about new creative ways to engage youngpeople in science and engineering,” – words from President Obama at the National Academy of Scienceson the 27th of April 2009 as he urged the scientific community to find ways to cultivate the nextgeneration of scientists and engineers. A task that provides some hurdles considering these words came inthe wake of growing concern for the lack of students pursuing degrees and careers in STEM (Science,Technology, Engineering and Math) related fields. According to the National Center for EducationalStatistics, students who perform at or above the proficiency level in 8th grade science is fewer than 1 outof
intensityfactor range (the so-called Paris Law), and use this to analytically estimate the number of loadcycles required to grow an existing crack from an initial size to a final size. The students aremade aware of the fact that Paris Law is applicable for stress intensity factor range higher thanthe threshold value ΔK th, a material parameter that is available in literature [1, 2] Page 23.193.2As a complementary exercise to the rotating beam fatigue test, an analytical activity has beenintroduced as a lab project to obtain the S-N curves for typical steels. In this activity thestudents construct S-N curve analytically using the crack propagation