Office: Steinman Hall 218
Tel: (212)650-6714
Fax: (212)650-8013
email: yu@me.ccny.cuny.eduEducation:
Ph.D. Mechanical and Aerospace Engineering, Princeton University, 1999.
M.E. Solid Mechanics, Tsinghua University, China, 1994.
B.S. Applied Mathematics, Tsinghua University, China, 1992.
General Research Interests:
Near Surface plasticity under contact load, including dislocation dynamics simulation of plastic deformation near a rough surface.
Meso-scale simulation of microstructure evolution in solid, including thin film stability, self-assembly, nano-pattern formation and etc.
Effects of stress on chemical reactions. Crack nucleation due to the stress-dependant chemical reactions.
Thin film and interface delamination. Failure and design rules for composite materials.
Current Research Topics:
Surface plasticity and wear resistance.
Failure and design rules for laminar composite with ductile and brittle layers.
Energetics and kinetics of stress dependent chemical reactions (etching or deposition). Crack nucleation due to the reactions, its threshold and time to nucleate.
Recent and frequently cited publications:
Yu, H.H. and J.W. Hutchinson (2002) Delamination of thin film strip, Thin Solid Films, in press.
Yu, H.H. and J.W. Hutchinson (2001) The influence of Substrate Compliance on Thin Film Buckling Delaminaton, Inter. J. Fracture, 113,39-55
Yu, H.H., M.Y. He and J.W. Hutchinson (2000) The Edge Effects in Thin Film Delamination, Acta Materialia 49, 93-107.
Yu, H.H., Suo, Z. (2000) The Implications of Energetic and Kinetic Surface Instability for a Stress Measurement Technique, J. Appl. Phys. 87, 1211-1218.
Yu, H.H., Suo, Z. (2000) Intersonic Crack Growth Along an Interface, Proc. Roy. Soc. London A 456, 223-146.
Yu, H.H., Suo, Z., (1999) An Axysymmetric Model of Pore-Grain Boundary Separation, J. Mech. Phys. Solids 47, 1131-1155.
Yu, H.H., Suo, Z., (1999) Delayed Fracture of Ceramics Caused by Stress-Dependent Surface Reactions, Acta Materialia 47, 77-88.
Yu, H.H., Suo, Z., (1998) Model of Wafer Bonding by Elastic Accommodation, J. Mech. Phys. Solids, 46, 829-840
Suo, Z., Yu, H. (1997) Crack Nucleation on elastic Polycrystal Surface in Corrosive Environment: Low Dimensional Model, Acta Meterialia 45, 2235-2245.
Thouless, M.D., Yu, H.H., Zhao, Z. and Yang, W. (1996) Damage Nucleation During Electromigration Along an Isolated Interface in an Elastic Medium, J. Mech. Phys. Solids 44, 371-387.
Yu, H.H., Yang, W. (1995) Mechanics of Transonic Debonding of a bimaterial interface case, J. Mech. Phys. Solids 43, 207-232.
Yu, H.H., Yang, W. (1994) Mechanics of Transonic Debonding of a bimaterial interface, anti-plane case, J. Mech. Phys. Solids 42, 1789-1802.
Collaborators:
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