Major Professional Experience

Dr. Wadley is a University Professor and the Edgar Starke Research Professor of Materials Science and Engineering. He leads a multi-disciplinary research group that studies the synthesis and processing of materials and the relationships between composition, structure, and properties. He has developed several directed vapor deposition processes and uses them to make multilayer thermal barrier coatings and thin film lithium ion battery systems. His group characterizes the structure of these materials and their key performance defining properties and then explores how to optimize performance by control of the processing environment. Modeling plays a key role in this optimization. His modeling research in this area has spanned vapor transport and atomic/molecular assembly using kinetic Monte Carlo, molecular dynamics and density functional methods.

Dr. Wadley's research group also explores the design and fabrication of synthetic cellular materials and investigates their use for thermal management and impulse load mitigation. He develops novel fabrication approaches that enable the topology and cell wall materials to be varied to maximize performance. For some applications, heat pipe principles have been integrated with cellular structures resulting in thermal management systems with exceptional thermal transport and dissipation performance.

His groups' past sensor research has addressed many aspects of the interaction of elastic and electromagnetic fields with materials and led to the development of numerous in-situ process control sensors. These sensors have been applied to control processes ranging from the growth of II-VI semiconductor crystals to the continuous casting of steel. The integration of advanced sensors, process models and feedback control concepts has become known as intelligent materials processing of materials (IPM) and his IPM laboratory uses this approach for making the novel materials described above. His research group has been awarded (or has pending) many patents. They have developed several processing technologies that are being commercialized. They include two vapor deposition technologies (directed vapor deposition and energy modulated vapor deposition) and several processes for making cellular materials with lattice truss topologies from a wide range of engineering materials including light metals, superalloys, and high performance composites.

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Research Interests

 

Haydn Wadley’s research interests are very broad and span the synthesis, structure and performance of novel materials. Current areas of interest include multifunctional cellular materials for thermal management (e.g. the leading edges of hypersonic vehicles), adaptive/deployable structures, ultralight materials/structures and crushable structures for localized impulse mitigation. He also anticipates several research openings for graduate students in the thermal barrier coatings arena where novel rare earth zirconate/refractory metal multilayers are being investigated.

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Selected Publications

 

 

“Multifunctional Periodic Cellular Metals”, H.N.G. Wadley, Proc Roy. Soc. A, 364, pp.31-68, 2006

“Quasi-static Deformation and Failure Modes of Composite Square Honeycombs”, B.P. Russell, V.S. Deshpande, and H.N.G. Wadley, Journal of Mechanics, Materials and Structures, Volume 3, No. 7, 2008

“The Resistance of Metallic Plates to Localized Impulse”, Z. Wei, V.S. Deshpande, A.G. Evans, K.P. Dharmasena, D.T. Queheillalt, H.N.G. Wadley, Y. Murty, R.K. Elzey, P. Dudt, Y. Chen, D. Knight, and K. Kiddy, Journal of Mechanics & Physics in Solids, Vol 56, pp. 2074-2091, 2008

“Atomic Assembly of Cu/Ta Multilayers” Surface Roughness, Grain Structure, Misfit Dislocation and Amorphization”, M.F. Francis, X.W. Zhou, J.J. Quan and H.N.G. Wadley, Journal of Applied Physics, Volume 104, pp. 034310, 2008

“Shear Behavior of Aluminum Lattice Truss Sandwich Panel Structures”, G.W. Kooistra, D.T. Queheillalt, H.N.G. Wadley, Materials Science and Engineering A, Vol. 472, pp. 242-250, 2008

“The Compressive Response of Carbon Fiber Composite Pyramidal Truss Sandwich Cores”, K. Finnegan, G. Kooistra, H.N.W. Wadley, and V.S. Deshpande, International Journal of Materials Research, Issue 12/2007, 2007

“Analytic Bond-Order Potentials for Modelling the Growth of Semiconductor Thin Films”, R. Drautz, X.W. Zhou, D.A. Murdick, B. Gillespie, H.N.G. Wadley and .G. Pettifor, Progress in Materials Science, 52, pp.196-229, 2007

“Morphology and Thermal Conductivity of Yittria Stabilized Zirconia Coatings”, Hengbei Zhao, Fengling Yu, Ted D. Bennett, and Haydn N.G. Wadley, Acta Materialia, 54, pp. 5195-5207, 2006

“NiAl Bond Coats Made by a Directed Vapor Depositon Approach”, Z. Yu, D.D. Hass, and H.N.G. Wadley, Materials Science & Engineering A, Vol. 394, pp. 43-52, 2005

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