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Dayakar Penumadu

Dayakar Penumadu

Fred N. Peebles Professor and JIAM Chair of Excellence

Biography

Penumadu has been a faculty member in the Department of Civil & Environmental Engineering at the University of Tennessee, Knoxville since Fall 2001. He currently holds Fred N. Peebles professorship and the Joint Institute for Advanced Materials (JIAM) Chair of Excellence position, joint with Oak Ridge National Laboratory. Dr. Penumadu served as the Head of the Civil and Environmental Engineering Department from 2007 to 2014. Prior to joining University of Tennessee, Knoxville, he was a faculty member at Clarkson University for 8 years.


Research

Carbon fiber reinforced polymeric composites and sandwich structures, environmental degradation, and multi-scale mechanics. Multi-axial stress-strain-time behavior of multi-phase and granular materials. Non-invasive characterization and residual stress using neutron and x-ray tomography and diffraction. Direct Numerical Simulations and Porous Media.


Research Sponsors

National Science Foundation
Office of Naval Research
Department of Energy
Defense Threat Reduction Agency
General Motors
Entergy Corporation
National Nuclear Security Administration
TN Department of Transportation


Education

PhD from Georgia Institute of Technology

MS from University of Kentucky and Purdue University

BS from Birla Institute of Technology and Science, Pilani, India


Publications

Kant, M., & Penumadu, D. (2014). Dynamic mechanical characterization for nonlinear behavior of single carbon fibers. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 66, 201-208.

Bunn, J. R., Penumadu, D., Lou, X., & Hubbard, C. R. (2014). Effect of Multi-Axial Loading on Residual Strain Tensor for 12L14 Steel Alloy. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 45A(9), 3806-3813.

Howarth, G. H., Sobolev, N. V., Pernet-Fisher, J. F., Barry, P. H., Penumadu, D., Puplampu, S., Taylor, L. A. (2014). The secondary origin of diamonds: multi-modal radiation tomography of diamondiferous mantle eclogites. INTERNATIONAL GEOLOGY REVIEW, 56(9), 1172-1180.

Mabe, A. N., Urffer, M. J., Penumadu, D., Schweitzer, G. K., & Miller, L. F. (2014). Transparent lithium-6 based polymer scintillation films containing a polymerizable fluor for neutron detection. RADIATION MEASUREMENTS, 66, 5-11.

Woracek, R., Penumadu, D., Kardjilov, N., Hilger, A., Boin, M., Banhart, J., Manke, I. (2014). 3D Mapping of Crystallographic Phase Distribution using Energy-Selective Neutron Tomography. ADVANCED MATERIALS, 26(24), 4069-4073.

Miller, L. F., Urffer, M. J., Mabe, A., Uppal, R., Penumadu, D., & Schweitzer, G. (2014). Secondary Electron Energy Deposition in Thin Polymeric Films for Neutron-Photon Discrimination. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 61(3), 1381-1388.

Siriruk, A., & Penumadu, D. (2014). Degradation in fatigue behavior of carbon fiber-vinyl ester based composites due to sea environment. COMPOSITES PART B-ENGINEERING, 61, 94-98.

Uppal, R., Sen, I., Penumadu, D., Young, S. A., Urffer, M. J., & Miller, L. F. (2014).
6Li embedded Biaxially stretched scintillation films for thermal neutron detection and neutron/gamma discrimination. Advanced Engineering Materials, 16(2), 196-201.

Kant, M., & Penumadu, D. (2013). Fracture behavior of individual carbon fibers in tension using nano-fabricated notches. COMPOSITES SCIENCE AND TECHNOLOGY, 89, 83-88. 10. Huang, B., Zhang, Y., Shu, X., Liu, Y., Penumadu, D., & Ye, X. P. (2013). Neutron Scattering for Moisture Detection in Foamed Asphalt. JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 25(7), 932-938. doi:10.1061/(ASCE)MT.1943-5533.0000762

Bunn, J. R., Penumadu, D., Woracek, R., Kardjilov, N., Hilger, A., Manke, I., . . . Williams, S. (2013). Detection of water with high sensitivity to study polymer electrolyte fuel cell membranes using cold neutrons at high spatial resolution. APPLIED PHYSICS LETTERS, 102(23), 4 pages.

Kim, F. H., Penumadu, D., Gregor, J., Kardjilov, N., & Manke, I. (2013). High-Resolution Neutron and X-Ray Imaging of Granular Materials. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 139(5), 715-723.

Uppal, R., Sen, I., Penumadu, D., Young, S. A., Urffer, M. J., & Miller, L. F. (2014). Li-6 Embedded Biaxially Stretched Scintillation Films for Thermal Neutron Detection and Neutron/Gamma Discrimination. ADVANCED ENGINEERING MATERIALS, 16(2), 196-201.

Kant, M. E., Siriruk, A., Penumadu, D., Garlea, E., Vogel, S. C., Yu, X., Parish, C. M. (2013). Multi-Axial Mechanical Behavior of Zircaloy-702 and Effect on Initial Texture. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 44A, 94-108.

Kim, F. H., Penumadu, D., Schulz, V. P., & Wiegmann, A. (2013). Pore size distribution and soil water suction curve from micro-tomography measurements and real 3-D digital microstructure of a compacted granular media by using direct numerical simulation technique. Springer Series in Geomechanics and Geoengineering, 3, 171-176.

Mabe, A. N., Auxier, J. D., Urffer, M. J., Penumadu, D., Schweitzer, G. K., & Miller, L. E. (2013). Transparent lithiated polymer films for thermal neutron detection. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 722, 29-33.

Strobl, M., Woracek, R., Kardjilov, N., Hilger, A., Wimpory, R., Tremsin, A., . . . Penumadu, D. (2012). Time-of-flight neutron imaging for spatially resolved strain investigations based on Bragg edge transmission at a reactor source. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 680, 27-34.

Woracek, R., Bunn, J. R., Penumadu, D., & Hubbard, C. R. (2012). Method to determine hkl strains and shear moduli under torsion using neutron diffraction. APPLIED PHYSICS LETTERS, 100(19), 5 pages.

Kardjilov, N., Manke, I., Hilger, A., Williams, S., Strobl, M., Woracek, R., Banhart, J. (2012). Neutron Bragg-edge mapping of weld seams. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 103(2), 151-154.

Kim, F. H., Penumadu, D., & Hussey, D. S. (2012). Water Distribution Variation in Partially Saturated Granular Materials Using Neutron Imaging. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 138(2), 147-154.

Young, S. A., Sen, I., & Penumadu, D. (2012). Investigation of Li-6 Enriched Particle Dispersion in Fluorescent Electrospun Polymer Nanofibers to be Used as Thermal Neutron Scintillators. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 134(1), 7 pages.

Sen, I., Urffer, M., Penumadu, D., Young, S. A., Miller, L. F., & Mabe, A. N. (2012). Polyester Composite Thermal Neutron Scintillation Films. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 59(4), 1781-1786.

Ragland, W. S., Penumadu, D., & Williams, R. T. (2011). Finite element modeling of a full-scale five-girder bridge for structural health monitoring. STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, 10(5), 449-465.

Woracek, R., Penumadu, D., Kardjilov, N., Hilger, A., Strobl, M., Wimpory, R. C., Banhart, J. (2011). Neutron Bragg-edge-imaging for strain mapping under in situ tensile loading. JOURNAL OF APPLIED PHYSICS, 109(9), 4 pages.

Sen, I., Dadush, E., & Penumadu, D. (2011). Microwave-assisted foaming of expandable polystyrene beads. JOURNAL OF CELLULAR PLASTICS, 47(1), 65-79.

Sen, I., Penumadu, D., Williamson, M., Miller, L. F., Green, A. D., & Mabe, A. N. (2011). Thermal Neutron Scintillator Detectors Based on Poly (2-Vinylnaphthalene) Composite Films. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 58(3), 1386-1393.

Bunn, J. R., Penumadu, D., & Hubbard, C. R. (2010). Residual strain evolution in steel samples: tension versus torsion. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 99(3), 571-578.

Nordin, C., Ma, Z. J., & Penumadu, D. (2010). Combined Effect of Loading and Cold Temperature on the Stiffness of Glass Fiber Composites. JOURNAL OF COMPOSITES FOR CONSTRUCTION, 14(2), 224-230. doi:10.1061/(ASCE)CC.1943-5614.0000068

Hilger, A., Kardjilov, N., Kandemir, T., Manke, I., Banhart, J., Penumadu, D., Strobl, M. (2010). Revealing microstructural inhomogeneities with dark-field neutron imaging. JOURNAL OF APPLIED PHYSICS, 107(3), 3 pages.

Ragland, W. S., Penumadu, D., & Williams, R. T. (2010). Using Geophones for Nondestructive Evaluation of Full-Scale Bridges. TRANSPORTATION RESEARCH RECORD, (2201), 45-52.

Dayakar Penumadu

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