Education

University of Illinois at Urbana-Champaign, Ph.D. in Theoretical and Applied Mechanics

Research Interests

• Stochastic wave propagation:  scattering, radiative transfer, diffusion, localization
• Experimental ultrasonics:  NDE, linear and nonlinear materials characterization
• Multiscale characterization: atomic force microscope (AFM), nanoindentation, ultrasound
  
• Linear and nonlinear vibrations: structural, dynamics of the AFM
  
• Elastic wave propagation:  anisotropic, layered, geophysical, piezoelectric media
• Structural acoustics: complex structures, MEMS beams, plates, shells
  

Research Projects

Graduate and undergraduate research assistantships are often available for a variety of projects.  Both theoretical and experimental aspects of the above topics are being explored.  These assistantships are excellent opportunities to explore nondestructive evaluation, materials characterization, microsensors, MEMS, vibration, and acoustics.  For further details about current assistantships, please contact Dr. Turner.

Selected Publications

H. Zhang, J. A. Turner, J. S. Yang, J. A. Kosinski, “Electroelastic effect of thickness mode langasite resonators,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (to appear, 2007).
 
X.-F. Wu, G. Ghoshal, M. Kartashov, Z. Aslan, J. A. Turner, and Y. A. Dzenis, “Damage development in cross-ply graphite-fiber/epoxy laminates under impulsive loading exerted by Hopkinson pressure bar,” Polymer Composites (to appear, 2007).
 
S. Aksu and J. A. Turner, “Calibration of atomic force microscope cantilevers using piezolevers,” Review of Scientific Instruments (to appear, April 2007).
 
P. A. Yuya, Y. Wen, J. A. Turner, Z. Li, and Y. A. Dzenis, “Determination of the Young’s modulus of individual electrospun nanofibers by microcantilever vibration method,” Applied Physics Letters 90, article 11909 (2007).
           
S. Noriega, T. Mammedov, J. A. Turner, and A. Subramanian, “Intermittent Applications of Continuous Ultrasound on the Viability, Proliferation, Morphology, and Matrix Production of Chondrocytes in 3D Matrices,” Tissue Engineering 13, 611-618 (2007).
         
W. Kang, J. A. Turner, F. Bobaru, L. Yang, and K. Rattanadit “Granular Layers on Vibrating Plates: Effective Bending Stiffness and Particle-Size Effects,” J. Acoust. Soc. Am. 121, 888-896 (2007).
 
L. Yang, Z. Li, and J. A. Turner, “Ultrasonic characterization of microstructure evolution during processing,” J. Acoust. Soc. Am. 121, 50-59 (2007).
           
A. Caron, U. Rabe, M. Reinstädtler, J. A. Turner, and W. Arnold, “Imaging of in-plane surface properties using lateral bending modes of AFM cantilevers,” Applied Physics Letters 85, 6398-6400 (2004).
 
J. A. Turner, “Nonlinear vibrations of a beam with cantilever-Hertzian contact boundary conditions,” Journal of Sound and Vibration 275, 177-191 (2004).