Conference Session

Issues in Computer Education-HDL

Collection

2007 Annual Conference & Exposition

Authors

Jeff Gribschaw, D/EECS, USMA; Paul Patterson, D/EECS, USMA; Bryan Goda, USMA

Tagged Divisions

Computers in Education

AC 2007-1752: ACTIVE-HDL, MULTISIM, CADENCE... THERE HAS GOT TO BEA BETTER WAY TO TEACH CAD/E TOOLSJeff Gribschaw, D/EECS, USMA MAJ Jeff Gribschaw is an instructor in the Electrical Engineering Program at the US Military Academy. He has a Master of Science Degree in Electrical and Computer Engineering from the Georgia Institute of Technology and is a member of IEEE.Paul Patterson, D/EECS, USMA MAJ Paul Patterson is an instructor in the Electrical Engineering Program at the US Military Academy. He has a Master of Science Degree in Engineering Management from the University of Misouri – Rolla and a Master of Science Degree in Electrical Engineering from George Washington University

Conference Session

ABET Accreditation of Multidisciplinary Programs

Collection

2007 Annual Conference & Exposition

Authors

James Farison, Baylor University; Carmen Li Shen, Baylor University

Tagged Divisions

Multidisciplinary Engineering

AC 2007-539: ASEE’S NEW ROLE AS THE LEAD SOCIETY FOR ABETACCREDITATION REVIEW OF MULTIDISCIPLINARY ENGINEERINGPROGRAMS: AN UPDATE AND A LOOK AHEADJames Farison, Baylor University Dr. Jim Farison is currently professor and chair of the ECE Department at Baylor University, and is also administratively responsible for Baylor's B.S. in Engineering program. He currently serves as chair of ASEE's Multidisciplinary Engineering Division, and is a member of the ASEE Accreditation Activities Committee. He received his B.S.E.E. from The University of Toledo and his M.S. and Ph.D. from Stanford University, before returning to serve on the faculty at UT in the EE and then the Bioengineering departments, and

Conference Session

Recruiting, Retention and Diversity in Engineering Technology

Collection

2007 Annual Conference & Exposition

Authors

Irene Ferrara, Pennsylvania State University-Altoona; Andrew Vavreck, Pennsylvania State University-Altoona

Tagged Divisions

Engineering Technology

AC 2007-548: ANALYSIS OF THE RETENTION OF STUDENTS AND POSSIBLERECRUITMENT INTO TECHNOLOGY IN A COMMON FIRST-YEAR COURSEFOR ENGINEERING AND ENGINEERING TECHNOLOGY STUDENTSIrene Ferrara, Pennsylvania State University-Altoona Irene Ferrara, Pennsylvania State University Irene Ferrara is the Coordinator for the Electro-Mechanical Engineering Technology program for the Altoona College of the Pennsylvania State University. She received her B.S. in Engineering Science from the Pennsylvania State University and her M.S. in Mechanics and Materials Science from Rutgers, The State University of New Jersey. Address: 205 Force Technology Center, Penn State Altoona College, 3000 Ivyside Park, Altoona, PA

Conference Session

Multidisciplinary Design in the Classroom

Collection

2007 Annual Conference & Exposition

Authors

Peter Adriaens, University of Michigan; Corrie Clark, University of Michigan; Robert Sulewski, University of Michigan; John Wolfe, Limno-Tech, Inc

Tagged Divisions

Design in Engineering Education

AC 2007-689: OPTIMIZATION OF GREEN ROOF SYSTEMS FORMULTIFUNCTIONAL BUILDINGS: A THREE-YEAR INTEGRATED CIVIL ANDENVIRONMENTAL ENGINEERING DESIGN COURSE EXPERIENCEPeter Adriaens, University of Michigan Peter Adriaens is a professor within Civil and Environmental Engineering and the School of Natural Resources and Environment, University of Michigan. His expertise includes fate pathways of persistent organic pollutants (POPs); laboratory and field investigations on contaminant biodegradation in soils, sediments, and groundwater; and sensors for microbial and chemical constituents in environmental matrices.Corrie Clark, University of Michigan Corrie Clark is a PhD Candidate in Environmental

Conference Session

Knowing our Students, Part 1

Collection

2007 Annual Conference & Exposition

Authors

Jill Auerbach, Georgia Institute of Technology; Jonathan Gordon, Georgia Institute of Technology; Gary May, Georgia Institute of Technology; Cleon Davis, Georgia Institute of Technology

Tagged Divisions

Educational Research and Methods

AC 2007-1047: A COMPREHENSIVE EXAMINATION OF THE IMPACT OF THESUMMER UNDERGRADUATE RESEARCH PROGRAM ON MINORITYENROLLMENT IN GRADUATE SCHOOLJillL Auerbach, Georgia Institute of TechnologyJonathan Gordon, Georgia Institute of TechnologyGary May, Georgia Institute of TechnologyCleon Davis, Georgia Institute of Technology Page 12.22.1© American Society for Engineering Education, 2007 A Comprehensive Examination of the Impact of the Summer Undergraduate Research Program on Minority Enrollment in Graduate SchoolAbstractA widespread strategy to encourage minority students to attend graduate school in science,technology, engineering

Conference Session

Engineering in Middle Schools

Collection

2007 Annual Conference & Exposition

Authors

Kenneth Reid, Indiana University-Purdue University-Indianapolis; Christine Floyd, Brownsburg East Middle School

Tagged Divisions

K-12 & Pre-College Engineering

AC 2007-896: THE TSUNAMI MODEL ELICITING ACTIVITY:IMPLEMENTATION AND ASSESSMENT OF AN INTERDISCIPLINARYACTIVITY IN A PRE-ENGINEERING COURSEKenneth Reid, Indiana University-Purdue University-Indianapolis Kenneth Reid is an Associate Professor in Electrical and Computer Engineering Technology. He has a BS in Computer and Electrical Engineering from Purdue University, and an MSEE from Rose-Hulman Institute of Technology. He is currently pursuing a Ph.D. in Engineering Education at Purdue University and working to assess success in first year engineering technology students and implement advanced digital design techniques into early digital courses.Christine Floyd, Brownsburg East Middle School Chris

Conference Session

Emerging Trends in Engineering Education Poster Session

Collection

2007 Annual Conference & Exposition

Authors

Bradley Kramer, Kansas State University; Todd Easton, Kansas State University

AC 2007-903: CONCURRENT B.S./M.S. PROGRAMS: A METHOD TO INCREASEGRADUATE ENROLLMENTS AND ATTRACT TOP STUDENTS TO GRADUATESTUDYBradley Kramer, Kansas State University Dr. Kramer is the Department Head for Industrial and Manufacturing Systems Engineering and the holder of the Ike and Letty Evans Engineering Chair.Todd Easton, Kansas State University Dr. Easton is an Assistant Professor in the Department of Industrial and Manufacturing Systems Engineering at Kansas State University. Page 12.397.1© American Society for Engineering Education, 2007 Concurrent B.S./M.S. Programs: A Method to Increase

Conference Session

ChE: Innovations in Student Learning

Collection

2007 Annual Conference & Exposition

Authors

Paul Golter, Washington State University; Bernard Van Wie, Washginton State University; Gary Brown, Washington State University

Tagged Divisions

Chemical Engineering

AC 2007-2972: COMPARING STUDENT EXPERIENCES AND GROWTH IN ACOOPERATIVE, HANDS-ON, ACTIVE, PROBLEM BASED LEARNINGENVIRONMENT TO AN ACTIVE, PROBLEM-BASED ENVIRONMENT.Paul Golter, Washington State UniversityBernard Van Wie, Washginton State UniversityGary Brown, Washington State University Page 12.381.1© American Society for Engineering Education, 2007AbstractTwo questions that frequently come up when developing a teaching method that tries to combine bestpractices from multiple pedagogies are: Is this better than how we normally teach? And whichpedagogy is giving the most benefit. In the spring semester of 2006 we had a large enough junior classto separate our required Fluid

Conference Session

Learning Needs and Educational Success

Collection

2007 Annual Conference & Exposition

Authors

Sheree Watson, Montana State University; Heidi Sherick, Montana State University; Carolyn Plumb, Montana State University

Tagged Divisions

Minorities in Engineering

AC 2007-1910: USING A SERVICE-LEARNING PROJECT TO MAKE PROGRESSON BOTH RECRUITMENT AND RETENTION OBJECTIVES FOR AMERICANINDIAN ENGINEERING STUDENTSSheree Watson, Montana State UniversityHeidi Sherick, Montana State UniversityCarolyn Plumb, Montana State University Page 12.1534.1© American Society for Engineering Education, 2007 Using a Service-learning Project to Make Progress on Both Recruitment and Retention Objectives for American Indian Engineering StudentsThe Designing our Community (DOC) program at Montana State University(MSU), which is supported by the William and Flora Hewlett Foundation, hasthree goals: (1) Increase the motivation and

Conference Session

Recruitment and Retention

Collection

2007 Annual Conference & Exposition

Authors

Amir Mobasher

Tagged Divisions

Minorities in Engineering

Conference Session

Web-Based Education

Collection

2007 Annual Conference & Exposition

Authors

Thomas Walker, Virginia Tech

Tagged Divisions

Computers in Education

AC 2007-2060: REDEFINING “DISTANCE” EDUCATION: INCREASINGDIVERSITY, ACCESSIBILITY, AND/OR CLASSROOM PARTICIPATION INENGINEERING COURSES ON A TIME, FINANCIAL AND TECHNOLOGYSHOESTRINGThomas Walker, Virginia Tech Associate Professor of Engineering Education at VPI & SU. He earned his BSEE degree from Purdue University and his MSME from the Naval Postgraduate School. His primary academic and pedagogical interests are in the areas of distance/asynchronous learning technologies and methods, object-oriented programming, and object-oriented modeling. He is a licensed Professional Engineer. Page 12.1230.1© American

Conference Session

Issues Affecting Engineering Technology Program Development

Collection

2007 Annual Conference & Exposition

Authors

Anthony Dean, Old Dominion University; Gary Crossman, Old Dominion University; Reina Gerard, U.S. Navy

Tagged Divisions

Engineering Technology

AC 2007-2322: DEVELOPING A NEW PROGRAM IN MARINE ENGINEERINGTECHNOLOGY: ONCE THE PROGRAM BEGINS TO TAKE SHAPE, WHATNEXT? HOW CAN WE KEEP ITS MOMENTUM MOVING FORWARD?Anthony Dean, Old Dominion University ANTHONY W. DEAN is Assistant Professor of Engineering Technology at Old Dominion University. He received a Ph.D. in Engineering Management and a B.S. in Engineering Technology from ODU. Additionally, Dr. Dean received an MBA from the College of William and Mary. Prior to his appointment, Dr. Dean was Director of Operations and Business Development for Clark-Smith Associates, P.C., and served as an Electrician in the U.S. Navy aboard the USS South Carolina and the USS Enterprise.Gary Crossman, Old

Conference Session

Computer Engineering Technology Curriculum

Collection

2007 Annual Conference & Exposition

Authors

Veeramuthu Rajaravivarma, Central Connecticut State University; G. Thomas Bellarmine, Florida A&M-Florida State University

Tagged Divisions

Engineering Technology

AC 2007-944: VISUAL ROUTE AND VIRTUAL NETWORK COMPUTINGEXERCISES FOR COMPUTER NETWORK COURSESVeeramuthu Rajaravivarma, Central Connecticut State University Dr. V. Rajaravivarma is currently with the Computer Electronics and Graphics Technology department at Central Connecticut State University, New Britain, CT. He is a Professor and Program Coordinator of Computer Engineer Technology. He is Vice-Chair and past Treasurer of the IEEE-Connecticut Section. Previously, he was with Tennessee State University, Morehead State University, and North Carolina A&T State University. Dr. Rajaravivarma received a B.E. in Electronics & Communication Engineering from University of Madras,India, earned an

Conference Session

Thinking Ahead: Supporting New Technologies in Engineering Libraries

Collection

2007 Annual Conference & Exposition

Authors

Bruce Reid, Pennsylvania State University-Wilkes-Barre; Francis Derby, Pennsylvania State University-Lehman

Tagged Divisions

Engineering Libraries

AC 2007-470: SPATIAL DATA (GIS) SUPPORT FOR MULTIPLE DISCIPLINESWITH LAND SURVEYING ENGINEERING AS THE LEAD ELEMENT: A WORKIN PROGRESS AT THE PENN STATE WILKES-BARRE CAMPUSBruce Reid, Pennsylvania State University-Wilkes-Barre BRUCE REID is the Head Librarian at Penn State University, Wilkes-Barre campus. He has a B.S. degree in Business from Farleigh Dickinson University in New Jersey, and a Library Information degree from the University of Minnesota. His subject areas are Business, GIS applications, Telecommunications, and Land SurveyingFrancis Derby, Pennsylvania State University-Lehman FRANCIS DERBY, is currently Associate Professor of Surveying and Geographic Information Systems at Penn

Conference Session

Critical Success Factors for Technopolis Creation

Collection

2007 Annual Conference & Exposition

Authors

W. Andrew Clark, East Tennessee State University; Peter Hriso, East Tennessee State University; Craig A. Turner, East Tennessee State University

Tagged Divisions

Entrepreneurship & Engineering Innovation

AC 2007-2081: ENCOURAGING STUDENT PARTICIPATION IN SOCIALENTREPRENEURSHIP OPPORTUNITIESW. Andrew Clark, East Tennessee State University W. ANDREW CLARK is a nutritional biochemist with diverse experience in academics and industrial research. He received his Ph.D. in Nutrition from North Carolina State University in 1980 and served as Assistant Professor of Nutrition at South Dakota State University (1980 to 1983). From 1983 to 2001 he held various positions in research, management and business at Eastman Chemical Company. Dr. Clark is an Associate Professor of Entrepreneurial Business at East Tennessee State University.Peter Hriso, East Tennessee State University PETER HRISO received his

Conference Session

Knowing Our Students, Part 2

Collection

2007 Annual Conference & Exposition

Authors

Paul Santi, Colorado School of Mines

Tagged Divisions

Educational Research and Methods

pediments begins forming, the first set stopschanging in size. Revised instruction consisted of a short in-class group exercise, where studentswere asked to visualize a machine to make pediments and to describe what the machine had todo.Two concept tests were developed for testing before and after the revised instruction. Each testcontained a diagram and three to five multiple choice questions for each misconception. Theclass was divided into two groups: the first group was given test version A (reproduced as Figure1) as a pre-test and B (Figure 2) as a post-test, and the second group was given version B as a Page 12.798.3pre-test and A as a post

Conference Session

Training Faculty to Teach CE

Collection

2007 Annual Conference & Exposition

Authors

Decker Hains, U.S. Military Academy; Mark Evans, U.S. Military Academy; Stephen Ressler, U.S. Military Academy

Tagged Divisions

Civil Engineering

of material for a given purpose.In addition to setting the final level of achievement, the committee also addressed the level ofeducation at which each outcome should be achieved. Table 3 lists the current BOK profilewhich shows both the final level of achievement and the level of education where each levelshould be achieved. The “B” represents the portion of the BOK fulfilled through theBachelor’s degree. The “M/30” represents the portion of the BOK fulfilled through theMaster’s degree or equivalent and the “E” represents the portion of the BOK fulfilled throughpre-licensure experience. Page

Conference Session

Project and Model-Based Mathematics

Collection

2007 Annual Conference & Exposition

Authors

John Schmeelk, Virginia Commonwealth University; Jean Hodges, Virginia Commonwealth University Qatar

Tagged Divisions

Mathematics

-brained visual or tactile learners based on observations of design students’characteristics and Linksman’s definitions of these super links. This study set out to test thatdeduction by recording students’ super links after administering Linksman’s tests fordetermining learning style and brain hemispheric preferences (see Appendices A and B). Thetests were given early in the term shortly after introducing the course and its project-directedconcept, and the results were discussed with the students, who also received handouts ofLinksman’s characterizations for each of the learning styles and brain hemispheric preferences.Because Arabic art and architecture are strongly influenced by geometrical designs, MATH 131includes several chapters of the

Conference Session

Curriculum Development in Civil and Architectural Engineering Technology

Collection

2007 Annual Conference & Exposition

Authors

Jorge Tito-Izquierdo, University of Houston-Downtown; Alberto Gomez-Rivas, University of Houston-Downtown

Tagged Divisions

Engineering Technology

tools “text box” or “label”, which can be linked to the data input inthe corresponding cell. Figure 2 describes a method to include the input data into the sketch. Figure 1. Sketch used to describe the variables. Page 12.1529.3 a. From the toolbox of VBA select label or text box. Drag the icon to the sketch, together with the description. b. In the ‘formula bar’ of excel

Conference Session

Curricular Issues in Computer-Oriented Programs

Collection

2007 Annual Conference & Exposition

Authors

Azzedine Lansari, Zayed University; Akram Al-Rawi, Zayed University; Faouzi Bouslama, Université Laval

Tagged Divisions

Information Systems

student needs to develop b. Development of specific learning outcomes from these skill areas c. Identification of appropriate learning strategies to achieve learning outcomes d. Identification of indicators that establish the student has achieved learning outcomes e. Collection of pieces of evidence that demonstrates the student has met the performance indicators f. Organization and presentation of the evidence in a portfolio supplemented with commentaries to support student workAt Zayed University, the purpose of outcome-based learning assessment is to improve the qualityof learning and teaching in the College of Information Systems. It is based on three fundamentalprinciples: Student learning is the focus in

Conference Session

Assessment and Evaluation in Engineering Education I

Collection

2007 Annual Conference & Exposition

Authors

Patrick Tebbe, Minnesota State University-Mankato; Stewart Ross, Minnesota State University-Mankato; Brian Weninger, Minnesota State University-Mankato; Sharon Kvamme, Minnesota State University-Mankato; Jess Boardman, Minnesota State University-Mankato

Tagged Divisions

Educational Research and Methods

use and comparisons between the different texts. Afocus group discussion was then held between the grant assessment coordinator, the courseinstructor, and the students concerning the different texts. Page 12.280.3 Table 1: Selection of textbook used in the student focus groupTextbook A Traditionally formatted text Periodic real world comments and examplesTextbook B Traditionally formatted text Greater use of real world specificsTextbook C Graphically formatted text Numerous real world aspects includedTextbook D Largely online text Limited real world commentsWith regard

Conference Session

Aspirational Visions of Civil Engineering in 2025 & Policy 465

Collection

2007 Annual Conference & Exposition

Authors

Jeffrey Evans, Bucknell University; Daniel Lynch, Dartmouth College; David Lange, University of Illinois-Urbana Champaign

Tagged Divisions

Civil Engineering

Criterion 3(a-k) outcomes4 and four additional outcomesspecific to civil engineering.4 Accreditation Board for Engineering and Technology (ABET), Engineering Page 12.1461.6Accreditation Commission, Engineering Criteria 2000, Third Edition, BaltimoreMaryland.Table 2 shows the BOK rubric and the six levels of Bloom’s cognitive achievement.5The levels of achievement expected to be accomplished prior to licensure are shown. Forinstance, under “Knowledge”, (B) is indicated. This means that the level of achievementshould be achieved during the baccalaureate program of study. A symbol of (M/30) isindicated and should be achieved during either the master’s degree

Conference Session

Biology and Engineering

Collection

2007 Annual Conference & Exposition

Authors

George Meyer, University of Nebraska-Lincoln; David Jones, University of Nebraska-Lincoln

Tagged Divisions

Biological & Agricultural

the conclusion of the course, studentswere to be able to (a) develop and test FST and apply selected FST models to their particularresearch interest, (b) use current modeling literature related to biological and environmentalsystems for theory formation and hypothesis building, and (c) effectively use these methods tosimulate systems for understanding and solving new research problems. Supporting topicsincluded neural networks, machine vision, and genetic algorithms. Table 1 shows the syllabus ofcourse topics by number. Appendix A gives the university catalog description. Of particularconcern is the treatment of uncertainty and incomplete information associated with biologicaland environmental systems.Fuzzy Logic ModelingThe universe of

Conference Session

Novel Applications of Computers/Software in Energy Education

Collection

2007 Annual Conference & Exposition

Authors

Kala Meah, University of Wyoming; Steven Fletcher, University of Wyoming; Sadrul Ula, University of Wyoming; Steven Barrett, University of Wyoming

Tagged Divisions

Energy Conversion and Conservation

asynchronous squirrel-cage induction generator directly connected to the grid via a transformer. Since the squirrel-cage induction generator always draws reactive power from the grid, this configuration uses a capacitor bank for reactive power compensation. Type B: Limited variable speed wind turbine. This one uses a wound rotor generator with variable generator rotor resistance and pitch control, which allows for a speed range of up to 10% above the synchronous speed. Type C: Variable speed wind turbine with a doubly fed induction generator (DFIG) and pitch control. This concept allows a wider range of dynamic speed control compared to Type B, depending on the size of the frequency converter. Type D: Variable speed and

Conference Session

Emerging Technologies in Manufacturing Education II

Collection

2007 Annual Conference & Exposition

Authors

jack danziger, Rochester Institute of Technology; David Street, Rochester Institute of Technology; William Leonard, Rochester Institute of Technology

Tagged Divisions

Manufacturing

silicone-rubber mold (Figure 1). A series of fiber reinforced plastic parts was made from that mold(Figure 2). Each part was created using different combinations of carbon fiber, resin and methodsof resin injection. The end result attained is the level of quality desired (Figure 3). The studentsuse RP machines as a tool to front-load the design and engineering process, leaving more timefor manufacturing considerations. Offline quality control allows changes to be made withoutcapital loss in retooling. Page 12.1186.3 Fig ure 1 – RP b a se fo r rub b e r mo ld Fig ure 2 - La ying up c a rb o n fib e r o ve r

Conference Session

What's New in Dynamics?

Collection

2007 Annual Conference & Exposition

Authors

Jiang Zhou; Paul Corder, Lamar University; Kendrick Aung, Lamar University

Tagged Divisions

Mechanical Engineering

and an electrical system. For a spring-damper-massmechanical system in Figure 1(a), mass, damping coefficient, and stiffness are represented by m,b, and k respectively. If the excitation force is f(t), the equation of motion in terms ofdisplacement x(t) is m%x% - bx% - kx ? f (t ) (1) Page 12.1364.3For the electrical system in Figure 1(b), L, C, and R represent the inductance, capacitance, andresistance respectively. Mathematical modeling in terms of electrical charge q is as following,when the voltage source e(t) is applied. 1 Lq

Conference Session

Innovations in ECE Education I

Collection

2007 Annual Conference & Exposition

Authors

Haley Haywood, Oklahoma State University; Forrest Austin, Oklahoma State University; Seth Williams, Oklahoma State University; Cameron Musgrove, Oklahoma State University; Charles Bunting, Oklahoma State University

Tagged Divisions

Electrical and Computer

on the class, an ABA research design was employed. ENSC 2613 retained most of itstraditional techniques, during Module A, and added a development-based section between thefirst and second midterm exams. This new development-based segment, referred to as ModuleB, was created by a joint effort of an experienced professor and a team of undergraduate andgraduate students researching the developmental model and its classroom implementation.Module B encompassed a section of an entirely development-based methodology to be comparedwith the lecture-based “traditional” approach.The following section explains the course structure before the experimental phase conductedduring the fall of 2006. It essentially describes the methodology (called

Conference Session

EMD Curriculum Design

Collection

2007 Annual Conference & Exposition

Authors

Stuart Kellogg, South Dakota School of Mines and Technology

Tagged Divisions

Engineering Management

preference curves and alternative approaches to problem solving is becoming arequirement for multi-disciplinary team processes and creative problem solving. The third, andperhaps more compelling reason, is the need for engineering educators to more adequatelyaddress increasingly diverse learning needs. Consider for example, the thinking preferencecurves using the Herrmann Brain Dominance Inventory (HBDI) for two students shown below. (a) HBDI Student A (b) HBDI Student B Figure 2. Herrmann Brain Dominance Thinking Curves for Two Students A and BBy its nature, much of the engineering curriculum resides in quadrant A. For student A, there isa strong match between the curriculum and the student’s thinking

Conference Session

Environmental Engineering Curricula I

Collection

2007 Annual Conference & Exposition

Authors

Xiaoqi Zhang, University of Massachusetts-Lowell; Clifford Bruell, University of Massachusetts-Lowell; Yexin Yin, University of Massachusetts Lowell; Praveen Jayaradu, University of Massachusetts Lowell; Mark Hines, University of Massachusetts Lowell

Tagged Divisions

Environmental Engineering

% 0% 0 20 40 60 80 100 Time (min) Figure 2. TCE dechlorination by nanoscale Pd/Fe. Page 12.973.5AssessmentModules were evaluated by the University of Massachusetts Donahue Institute (UMDI). Twosurvey instruments were used, namely feedback surveys (Appendix A) and multiple choice pre-post-tests (see Appendixes B, C

Conference Session

Modern Software Measurement Techniques

Collection

2007 Annual Conference & Exposition

Authors

Gangbing Song, University of Houston; Claudio Olmi, University of Houston; Richard Bannerot, University of Houston

Tagged Divisions

Instrumentation

+ - of Polarity (a) (b) Figure 5: Piezoceramic Poling Process: Before (a) and After (b)To pole the piezoceramic, a strong electric field (> 2000 V/mm) is applied to the heatedpiezoceramic material, inducing the material to expand along the axis of the field and contractperpendicular to the axis (Figure 5(b)). After the material cools and the field is removed, theWeiss domains roughly remain in alignment. As a result, the material now has its own polaritywhich can be degraded by exceeding the mechanical, thermal, and electrical limits of thematerial. Subsequently, there is a growth in the direction parallel to the polarization and acontraction in the direction