Conference Session

What's New in Dynamics?

Collection

2007 Annual Conference & Exposition

Authors

Arnaldo Mazzei, Kettering University; Richard Scott, University of Michigan

Tagged Divisions

Mechanical Engineering

: Page 12.327.5 d2x dx k1 3 Q - 2 dy 0 - y 0 2 x - x ? sin(y t ) dt 2 dt m m (4)where the spring force is kx - k1 x , m is the mass, d is the damping ratio of the system, y 0 3 m ) is the undamped linear natural frequency and Q and y are the amplitude and(given by kfrequency, respectively, of the external harmonic excitation. Setting k1 ? f k and introducing the

Conference Session

Software and E-learning in the ME Curriculum

Collection

2007 Annual Conference & Exposition

Authors

Ali Mohammadzadeh, Grand Valley State University

Tagged Divisions

Mechanical Engineering

))); % Angle of AoA to X axis Page 12.242.11% CALCULATE POSITION OF C AT ALL STEPSfor q=1:(steps+1) theta2=theta2min+(q-1)*(range)/steps; % Current theta2% CALL FUNCTION TO GET ESTIMATES OF THETAS 3 AND 4 thetabars=thetas(theta1,theta2,theta3,theta4,r1,r2,r3,r4); theta3=thetabars(1); % Set current theta3 to Newton-Raphsonestimate theta4=thetabars(2); % Set current theta4 to Newton-Raphsonestimate thth(q)=theta4; Xc(q)=r2*cos(theta2)+r5*cos(theta3+psic); % Put current Xc inmatrix Yc(q)=r2*sin(theta2)+r5*sin(theta3+psic); % Put current iYc inmatrix Xb(q)=r1*cos(theta1)+r4*cos(theta4); % Put current Xb inmatrix Yb(q)=r1*sin(theta1)+r4

Conference Session

Thermodynamics and Fluid Mechanics Instruction

Collection

2007 Annual Conference & Exposition

Authors

Andrew Foley, U.S. Coast Guard Academy

Tagged Divisions

Mechanical Engineering

. Using equation (1) the property B can then be replaced with energy in its variousguises and the accounting of energy through the control volume becomes :DU CV •U int ernal ? - Â Q% net _ in / Â W% net _ out - Â (m% e) net _ in …….(2) Dt •t By treating the surroundings (i.e. Everything else) as just another control volume onecan apply the same accounting exercise to the surroundings:DU SUR •U int ernal ? - Â Q% net _ in / Â W% net _ out - Â (m% e) net _ in …….(3) Dt •tFinally, by adding the two rates of change, equation (2) and (3), it was hypothesized byJoule and Clausius that, in the absence of Nuclear reactions, the sum should always equalzero. That is, the energy is conserved. i.e.DU SUR DU CV

Conference Session

Meeting ABET Requirements

Collection

2007 Annual Conference & Exposition

Authors

Zhengtao Deng, Alabama A&M University; Cathy Qian, Alabama A&M University; Ruben Rojas-Oviedo, Alabama A&M University

Tagged Divisions

Mechanical Engineering

experimental design, data collection, and data analysis; (q) acompetence in the use of computational tools; (r) a knowledge of chemistry; and (s)knowledge of calculus-based physics.Outcome can be assessed at the “program level” [2] using standardized testing such asfundamental of engineering exam, or it can be pursued at the “course level”. To ensure theteaching quality of the outcome based mechanical engineering program, systematicassessment of engineering curriculum is needed. More importantly, faculty needs to improveteaching techniques so that the student learning of each course can be measured againstprogram outcomes. In the past eight years, the current authors have developed a technique to

Conference Session

Thermodynamics and Fluid Mechanics Instruction

Collection

2007 Annual Conference & Exposition

Authors

Vladimir Sheyman, Wayne State University

Tagged Divisions

Mechanical Engineering

filtration through the layer of particulates isdG P − Pi =k a (3) dτ PaThe harmonic fluctuation of the cylinder is described by the following expressions = A Sinωτ (4)andd 2s 2 = − Aω 2 Sinωτ (5)dτIntroducing the following variables ( Pa − Pi ) ⋅ F Pa G RTq= (6) α= (7) v = = (8) Pa m hF Pa Page 12.1489.5one has instead of equations (1), (2), and (3) d 2h d 2s + α q = − −g (9) dτ 2 dτ 2 (1 - q

Conference Session

Innovations in Mechanical Engineering Education Poster Session

Collection

2007 Annual Conference & Exposition

Authors

Nihad Dukhan, University of Detroit Mercy; Michael Jenkins, University of Detroit Mercy

Tagged Divisions

Mechanical Engineering

flow of electric current. The flow is due to a driving potential: in heattransfer the driving potential is a temperature difference between two locations, while in the caseof electric current the voltage difference is the driving potential. The thermal resistance isobtained by employing this analogy and manipulating the heat transfer governing equations andcasting them in the form of Ohm’s law.For a plane thin wall with its two surfaces at constant, yet different, temperatures (Fig. 1), thesteady-state one-dimensional conduction heat transfer is given by Fourier’s law: T1 / T2 Q% ? k A (1

Conference Session

Improving ME Instructional Laboratories

Collection

2007 Annual Conference & Exposition

Authors

Brian Sangeorzan, Oakland University; Laila Guessous, Oakland University

Tagged Divisions

Mechanical Engineering

. Welect. Bomb + - QB Fuse Wire Sample CMFor the process of igniting the fuse and the test sample, and the resulting rise in watertemperature, the 1st Law states that: E 2 − E 1 = Energy In − Energy outso that, ∆E = Welect. − Q B (1)Since

Conference Session

Thermodynamics and Fluid Mechanics Instruction

Collection

2007 Annual Conference & Exposition

Authors

Stephen McClain, Baylor University; Christopher Smitherman, University of Alabama-Birmingham

Tagged Divisions

Mechanical Engineering

. T-High Q-High 3 kPa 10 © Pa 3 condenser 2 TH ( 273 - 25) © K TL ( 273 / 45) © K Ammonia W-in PL_NH3 100© kPa PH_R22 200© kPa 4 1 Heat Exchanger 3 2 kg mdotNH3 0.2© FT 10© K s R-22

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

Improving ME Instructional Laboratories

Collection

2007 Annual Conference & Exposition

Authors

John Matsson, Oral Roberts University

Tagged Divisions

Mechanical Engineering

) ν∞where U∞ is the free stream velocity, c is the chord length of the airfoil and ν ∞ = µ∞ / ρ∞ is thekinematic viscosity of the fluid where µ∞ is the dynamic viscosity and ρ∞ is the density. Thepressure distribution over the airfoil is expressed in non-dimensional form by the pressurecoefficient p − p∞ Cp = (2) q∞ Page 12.123.5where p is the surface pressure measured at different locations on the airfoil surface, and p∞ ,q∞ = ρ∞U∞2 /2 are the free stream static and dynamic pressure, respectively. The pressurecoefficient

Conference Session

Innovations for the Senior Year of the ME Curriculum

Collection

2007 Annual Conference & Exposition

Authors

Showkat Chowdhury, Alabama A&M University; Abdul Jalloh, Alabama A&M University; Ruben Rojas-Oviedo, Alabama A&M University; Mohamed Seif, Alabama A&M University; Amir Mobasher, Alabama A&M University

Tagged Divisions

Mechanical Engineering

collection, and data analysis. Page 12.342.5 q A competence in the use of computational tools. r Knowledge of chemistry. s Knowledge of calculus-based physics. Table 2. ME Program Educational Objective and Expected Educational Outcomes.ME To provide students with the necessary preparation in mechanicalEducational engineering to compete effectively for professional careers in this fieldObjective and with the motivation for personal and professional growth through lifelong learning.Expected The student will demonstrate the necessary competencies inEducational fundamental

Conference Session

Meeting ABET Requirements

Collection

2007 Annual Conference & Exposition

Authors

Karinna Vernaza, Gannon University; Mahesh Aggarwal, Gannon University

Tagged Divisions

Mechanical Engineering

States.Published by The Accreditation Board for Engineering and Technology (ABET), Baltimore MD. 1997. Available:http://www.abet.org/EAC/eac2000.html.2. Mak, F., Frezza, S., “Process to Identify Minimum Passing Criteria and Objective Evidence in Support ofABET EC2000 Criteria Fulfillment,” ASEE Annual Conference and Exposition, Salt Lake City, Utah, June 2004.3. Cutts, Q., Carbone, A., van Haaster, K., “Using an Electronic Voting System to Promote Active Reflection onCoursework Feedback,” Proc. Of the Intnl. Conf. on Computers in Education, Melbourne, Australia, November2004.4. Vernaza, K.M., “Instructional Innovation of Mechanical Engineering Core Courses with Technology,” FacultyDevelopment Grant in Instructional Innovation with Technology, Center for

Conference Session

Outstanding Contributions to ME

Collection

2007 Annual Conference & Exposition

Authors

Peter Avitabile, University of Massachusetts-Lowell

Tagged Divisions

Mechanical Engineering

FORCE GAGE I Q HAMMER TIP CHARACTERIZATION M LEAKAGE U HAMMER TIP DIFFERENT PULSE SHAPES E WINDOWS E FOURIER SERIES & FFT