Faculty DirectoryOluwaseyi Balogun
Assistant Professor of Civil and Environmental Engineering and Mechanical Engineering
Contact2137 N. Tech Drive
Evanston, IL 60208-3109
Email Oluwaseyi Balogun
Ph.D. Mechanical Engineering, Boston University, Boston, MA
M.S. Mechanical Engineering, Boston University, Boston, MA
B.S. Mechanical Engineering, University of Lagos, Lagos, Nigeria
Research: Materials Characterization, Nondestructive Evaluation, Elastic Wave Propagation, and Ultrasonic and Optical Sensors
My research interests are focused on understanding the dynamic behavior of materials and the development of nondestructive techniques for the characterization of material properties. I am particularly interested in the characterization of thermal and mechanical properties of micro- and nanoscale structures using optical and ultrasonic methods. Quantitative measurement and understanding of the thermo-mechanical behavior of materials on micro- and nanometer length scales are critical to the development of a wide variety of emerging material systems including: nanostructured materials, nanoresonators, thin films, ceramic coatings, etc. The physical properties of these material systems are intrinsically heterogeneous and length scale dependent, and the measurement of their scale specific material properties is needed in order to accurately predict their functional characteristics and reliability.
I am also interested in structural health monitoring applications that are tailored to evaluating the continued fitness of various civil infrastructures including pedestrian and vehicular bridges. The health (or fitness) of these infrastructures depend on their material and geometrical properties, which may change due to ageing or severe loading conditions, leading to adverse system performance.
- BU Technology Commercialization Institute Award, 2004
O. Balogun and J.D. Achenbach “Surface Waves on a halfspace with depth-dependent properties”, Journal of the Acoustical Society of America, 132(3), pp. 1336-1345, (2012)
O. Balogun and T.W. Murray “Frequency Domain Photoacoustics using Intensity Modulated Laser Sources”, (Special Issue on Laser Ultrasound), Nondestructive Testing and Evaluation,http://dx.doi.org/10.1080/10589759.2011.573554, pp. 1-17, (2011) (Invited paper)
O. Balogun, G.D. Cole, R. Huber, D. Chinn, T.W. Murray, and J.B. Spicer “High Spatial Resolution Sub-Surface Acoustic Microscopy Using a Laser Based Ultrasonic Technique”, IEEETransactions onUFFC, 58(1), pp.226-233, (2011)
O. Balogun, B. Regez, H.F. Zhang, and S. Krishnaswamy, “Real-time full-field photoacoustic imaging using an ultrasonic camera“, Journal of Biomedical Optics, 15(2), pp. 021318-1 – 021318-5, (2010)
J. H. Kim, O. Balogun, and S.P. Shah, “Atomic force acoustic microscopy to measure nano-mechanical properties of cement pastes”, Transportation Research Record, Journal of The transportation research board, 2141, pp. 102 -108, (2010)
G.R. Kirikera,O. Balogun, and S. Krishnaswamy, “Adaptive Fiber Bragg Grating Sensor Network for Structural Health Monitoring: Applications to Impact Monitoring”, Structural Health Monitoring, Vol. 0(0), pp. 1-12, (2010)
J.D. Achenbach and O. Balogun, “Anti-plane Surface Waves on a Halfspace with Depth Dependent Elastic Properties”, Wave Motion, 47(1), pp. 59-65, (2009)
O. Balogun, R. Huber, D. Chinn, and J.B. Spicer “Laser Ultrasonic Inspection of the Microstructural State of Thin Metal Foils”, Journal of the Acoustical Society of America, 125(3), pp. 1437-1443, (2009)
O. Balogun, Claire Prada, and T.W. Murray, “Simulation and Measurement of Optically Excited S1 Zero Group Velocity Lamb Wave Resonance in Plates”, J. Appl. Phys. 102, 064914-1 - 064914-10, (2007)
Hui. Yu, O. Balogun, Biao. Li, T.W. Murray, and Xin Zhang, “
Fabrication of Three Dimensional Microstructures Based on Singled-layered SU-8 For Lab-on-chip Applications”, Sensors and Actuators A: Physical, 127(2), pp. 228 – 234, (2006)
T.W. Murray, O. Balogun, T.L. Steen, S. N. Basu and V. K. Sarin, “Inspection of Compositionally Graded Mullite Coatings Using Laser Based Ultrasonics”, International Journal of Refractory Metals and Hard Materials, 23, pp. 322-329, (2005)
T.W. Murray and O. Balogun, “High Sensitivity Laser Based Acoustic Microscopy using a Modulated CW Excitation Source”, Appl. Phys. Lett., 85(14), pp. 2974-2976, (2004)
“Non-Destructive Imaging, Characterization or Measurement of Thin Items Using Laser Generated Lamb Waves,” C. Prada, O. Balogun and T.W. Murray. Patent Filed in October, 2006
In the Classroom
Prof. Balogun teaches undergraduate level courses EA-206-2: Engineering Analysis: Statics and Dynamics, and ME 363: Mechanical Engineering. EA-206-2 provides freshman level undergraduates with a solid background in the application of Newton’s laws to engineering problem solving. ME 363 provides students with a strong background in modeling and interpretation of oscillatory motion in mechanical systems, based on physics based analysis approaches.
Prof. Balogun also teaches a graduate level course, ME 495: Dynamic deformation of materials. The course focuses on aspects of wave motion in solids including, linear and nonlinear elastic deformation, fracture, and diffraction, induced by dynamic mechanical loading. Specific examples from metals, polymers and composites are provided. The course also surveys available experimental techniques for understanding dynamic deformation in materials.