APPLICABILITY OF FRACTURE MECHANICS TO NANO-COMPONENTS
Keywords:
Nano-elements, Deformation, Fracture, Mechanical properties, Stress concentrationAbstract
The focus in this project is put on the mechanical property of nano-components (nano-elements). The deformation property of a thin film consisting discretely arrayed nano-elements on a substrate is evaluated by means of an atomic force microscope (AFM) with a loading apparatus. The fact that the thin film eliminates stress singular field at the interface edge between dissimilar materials is numerically and experimentally elucidated.
Downloads
References
M. Suzuki and Y. Taga, "Integrated sculptured thin films", Japanese Journal of Applied Physics, 40, L358-L359, 2001
K. Robbie, M.J. Brett and A. Lakhtakia," First thin film realization of a helicoidal bianisotropic medium", J Vacuum Sci Technol, A13(6), 2991-2993 , 1995
H. Hirakata, T. Hirako, Y. Takahash, et al., " Creep crack initiation at a free edge of an interface between submicron thick elements ", Engineering Fracture Mechanics, 75, 2907-2920, 2008
Takahashi Y, Hirakata H, Kitamura T, "Quantitative evaluation of plasticity of a ductile nano-component", Thin Solid Films, 516, 1925-1930, 2008
H. Hirakata, T. Kitamura, Y. Yamamoto, "Evaluation of interface strength of micro-dot on substrate by means of AFM", International Journal of Solids and Structures, 41, 3243-3253, 2004
Hirakata H, Kitazawa M, Kitamura T, " Fatigue crack growth along interface between metal and ceramics submicron-thick films in inert environment ", Acta Materualia, 54, 89-97, 2006
H. Hirakata, S. Matsumoto, M. Takemura, M. Suzuki and T. Kitamura, "Anisotropic deformation of thin films comprised of helical nanosprings", International Journal of Solids and Structures, 44, 4030-4038, 2007.
T. Sumigawa, H. Hirakata, M. Takemura, S. Matsumoto, M. Suzuki and T. Kitamura, "Disappearance of stress singularity at interface edge due to nanostructured thin film", Engineering Fracture Mechanics, 75, 3073-3083, 2008
D.B. Bogy, "Edge-bonded dissimilar orthogonal elastic wedges under normal and shear loading", Journal of Applied Mechanics, 35, 460-466, 1968
T. Sumigawa, T. Sueda, Y. Futamura, M. Suzuki and Takayuki Kitamura, " Effect of Interface Layer consisting of Nanosprings on Stress Field near Interface Edge ", Engineering Fracture Mechanics, submitted
