Yohannes Ketema
Contract Associate Professor

Dr. Ketema’s research focuses broadly in the area of dynamics. He has done work in the dynamics of active materials such as shape memory alloys and studied their possible use for the purpose of vibration damping and control. Professor Ketema has also done research in the dynamics and stability of formations, and more recently in orbital mechanics where he has studied the relative motion of satellites in elliptic orbits.

Degrees

Ph.D: Royal Institute of Technology, Stockholm, Sweden, 1993
Licentiate of Engineering: Royal Institute of Technology, Stockholm, Sweden, 1989
Master of Science: Royal Institute of Technology, Stockholm, Sweden, 1987

Experience

2003-2004: Director of Undergraduate Studies
2003-Present: Contract Associate Professor: Aerospace Engineering and Mechanics University of Minnesota
1993-2003: Contract Assistant Professor: Aerospace Engineering and Mechanics University of Minnesota
1986-1993: Teaching Assistant: Royal Institute of Technology, Stockholm, Sweden
1993: Research Engineer: Royal Institute of Technology, Stockholm, Sweden

Five Recent Publications

Fosdick R., Ketema Y., 2009, Thermal Effects on the Vibration Damping Properties of Shape Memory Alloys, Journal of Intelligent Material Systems and Structures, , (Journal Article) More Details
Ketema Y., 2009, Optimal Satellite Transfers Using Relative Motion Dynamics, Journal of Guidance Control and Dynamics, to appear, (Journal Article) More Details
Ketema, Y., 2006, An Analytical Solution for Relative Motion with an Elliptic Reference Orbit, Journal of Astronautical Sciences, 53, 4, October-December, (Journal Article) More Details, Request PDF
Ketema, Y., 2003, Approximate Model for a Viscoelastic Oscillator, Journal of Applied Mechanics, 70(5), 757-761, (Journal Article) More Details, Request PDF
Ketema, Y., R. L. Fosdick and J. H. Yu, 1998, A nonlinear oscillator with history dependent forces, International Journal of Nonlinear Mechanics, 33, 447-459, (Journal Article) More Details, Request PDF

See more publications

Honors and Fellowships

2005 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota: Background
2002 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
1999 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
1997 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
1996 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

Current Courses

Undergraduate: AEM 2021 -- Statics and Dynamics | Course Home Page
Graduate: AEM 5401 -- Intermediate Dynamics | Course Home Page

Subject and Courses Taught

Undergraduate: AEM 2011 -- Statics; AEM 2012 -- Dynamics; AEM 2021 -- Statics and Dynamics; AEM 2301 -- Mechanics of Flight; AEM 3031 -- Deformable Body Mechanics; AEM 4301 -- Orbital Mechanics; AEM 4601 -- Instrumentation Laboratory
Graduate: AEM 5401 -- Intermediate Dynamics; AEM 8495 -- Selected Topics in Dynamical Systems and Controls

Last Modified: 2008-09-19 at 13:31:21 -- this is in International Standard Date and Time Notation