The University of Tennessee, Knoxville

Joint Institute for Advanced Materials


Dayakar Penumadu

Dayakar Penumadu

Fred N. Peebles Professor and Head, JIAM Chair of Excellence
Department of Civil and Environmental Engineering

PhD
Georgia Institute of Technology

Research Bio



Research Interests

  • Multi-axial stress-strain-time behavior of multi-phase materials and fiber reinforced polymeric composites and environmental degradation; multi-scale microstructure using scanning electron micrography, mercury intrusion porosimetry, and non-destructive imaging using neutrons and X-rays.
  • Modeling hydraulic transport and stress transfer processes of geomaterials from microstructure. Geo-mechanics and its applications to Lost Foam Casting (LFC) process; particle size and shape analysis of powders and granular materials.
  • Two- and three-dimensional imaging of materials and engineering analysis using energy selective neutrons; tensorial residual stress mapping using neutron scattering .

Selected Publications

Hilger, A., N. Kardjilov, T. Kandemir, I. Manke, J. Banhart, D. Penumadu, A. Manescu & M. Strobl (2010) Revealing microstructural inhomogeneities with dark-field neutron imaging. Journal of Applied Physics, 107.

Siriruk, A., D. Penumadu & Y. J. Weitsman (2009) Effect of sea environment on interfacial delamination behavior of polymeric sandwich structures. Composites Science and Technology, 69, 821-828.

Siriruk, A., Y. J. Weitsman & D. Penumadu (2009) Polymeric foams and sandwich composites: Material properties, environmental effects, and shear-lag modeling. Composites Science and Technology, 69, 814-820.

Nagarkar, V. V., D. Penumadu, I. Shestakova, S. C. Thacker, S. R. Miller, J. F. Ankner, H. Z. Bilheux & C. E. Halbert (2009) Time-Resolved High Resolution Neutron Imaging Studies at the ORNL Spallation Neutron Source. IEEE Transactions on Nuclear Science, 56, 2493-2498.

Penumadu, D., A. K. Dutta, X. Luo & K. G. Thomas (2009) Nano and neutron science applications for geomechanics. KSCE Journal of Civil Engineering, 13, 233-242.

Lee, S. H., S. Q. Wang, G. M. Pharr, M. Kant & D. Penumadu (2007) Mechanical properties and creep behavior of lyocell fibers by nanoindentation and nano-tensile testing. Holzforschung, 61, 254-260.

Contact Information

Dayakar Penumadu
223 Perkins Hall
University of Tennesse
Knoxville, TN 37996-2010
865-974-2503
dpenumad@utk.edu

 

 


 

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