Recent publications:

S. Onaka
Geometrical Analysis of Near Polyhedral Shapes with Round Edges in Small Crystalline Particles or Precipitates
Journal of Materials Science, in press, 2008.

S. Onaka, T. Fujii and M. Kato
Elastic Strain Energy due to Misfit Strains in a Polyhedral Precipitate Composed of Low-Index Planes
Acta Materialia, 55, pp.669-673, 2007.

S. Onaka
Simple Equations Giving Shapes of Various Convex Polyhedra: The Regular Polydedra and Polyhedra Composed of Crystallographically Low-index Planes
Philosophical Magazine Letters, 86, pp.175-183, 2006.

C. Watanabe, R. Monzen, H. Nagayoshi and S. Onaka
Elastic State of Rod-shaped Ag Precipitates in a Cu-5.7wt%Ag Single Crystal
Philosophical Magazine Letters, 86, pp.65-73, 2006.

S. Onaka
A Simple Equation Giving Shapes between a Circle and a Regular N-sided Polygon
Philosophical Magazine Letters, 85, pp.359-365, 2005.

R. Monzen, H. Nagayoshi, C. Watanabe and S. Onaka
Effect of External Stress on Discontinuous Precipitation in {100} Planes in a Cu-5.7 wt% Ag Single Crystal
Philosophical Magazine Letters, 85, pp.13-20, 2005.

S. Onaka
Elastic Strain Energy due to Deviatoric Eigenstrains in an Inclusion HavingSymmetric Shape
Philosophical Magazine Letters, 85, pp.115-123, 2005.

S. Onaka
Strain Fields Caused by Doughnut-like and Tubular Inclusions with
Uniform Eigenstrains
Mechanics Research Communications, 32, pp.316-322, 2005.

T. Fujii, N. Sawatari, S. Onaka and M. Kato
Cyclic Deformation of Pure Aluminum Single Crystals with Double Slip
Orientations
Materials Science and Engineering A, 387-389, pp.486-490, 2004.

S. Onaka, T. Fujii and M. Kato
Effects of Octahedral to Spherical Precipitate-shape Transition on Elastic
Strain Energy due to Misfit Precipitates in Materials with Cubic Structures
Mechanics of Materials, 37, pp.179-187, 2004.

H. Sato, I. Ota, T. Fujii, S. Onaka and M. Kato
Morphological Evolution of Grain-Boundary SiO2 in Internally Oxidized
Cu-Si Bicrystals
Materials Transactions, 45, pp.818-823, 2004.

H. Sato, T. Fujii, S. Onaka and M. Kato
Effects of Grain-Boundary GeO2 particles on Intergranular Fracture of
Cu-GeO2 Polycrystals
Journal of Materials Science, 38, pp.1689-1693, 2003.

S. Onaka
Strain-free Points near a Doughnut-like Inclusion with Purely Dilatational
Eigenstrains
Mechanics Research Communications, 30, pp.663-666, 2003.

S. Onaka, N. Kobayashi, T. Fujii and M. Kato
Energy Analysis with a Superspherical Shape Approximation on the Spherical
to Cubical Shape Transitions of Coherent Precipitates in Materials with
Cubic Structures
Materials Science and Engineering A, A347, pp.42-49, 2003.

S. Onaka, N. Kobayashi, T. Fujii and M. Kato
Simplified Energy Analysis on the Equilibrium Shape of Coherent g'
Precipitates in g Matrix with a Superspherical Shape Approximation
Intermetallics, 10, pp.343-346, 2002.

S. Onaka, N. Kobayashi and M. Kato
Two-dimensional Analysis on Elastic Strain Energy due to a Uniformly
Eigenstrained Supercircular Inclusion in an Elastically Anisotropic Material
Mechanics of Materials, 34, pp.117-125, 2002.

S. Onaka, H. Sato and M. Kato
Elastic States of Doughnut-like Inclusions with Uniform Eigenstrains
Treated by Averaged Eshelby Tensors
Philosophical Magazine Letters, 82, pp.1-7, 2002.

T. Fujii, T. Tamura, M.Kato and S. Onaka
Size-Dependent Equilibrium Shape of Co-Cr Particles in Cu
Microscopy and Microanalysis, 8, pp.1434-1435, 2002.

C. Watanabe, K. Kanmuri, M. Kato, S. Onaka and T. Fujii
Rearrangement of Fatigue Dislocation Structure in Copper Single Crystals
Associated with Reduction of the Plastic Strain Amplitude
Philosophical Magazine A, 82, pp.1317-1330, 2002.

A. Madgwick, T. Mori, S. Onaka and P.W. Withers
Creep of a Composite with a Diffusional Creeping Matrix
Materials Science and Engineering A, 335, pp.320-323, 2002.

H. Sato, N. Takeoka, T. Fujii, S. Onaka and M. Kato
Brittle Intergranular Fracture of Cu polycrystals Containing Liquid B2O3
Particles
Journal of Materials Science Letters, 21, pp.617-619, 2002.

S. Onaka, A. Madgwick and T. Mori
Kinetics of Diffusional Creep Discussed by Energy Dissipation and Effect of
Grain-size Distribution on the Rate Equations
Acta Materialia, 49, pp.2161-2168, 2001.

S. Onaka
Averaged Eshelby Tensor and Elastic Strain Energy of a Superspherical
Inclusion with Uniform Eigenstrains
Philosophical Magazine Letters, 81, pp.265-272, 2001.

S. Onaka
A Relationship among Components of the Eshelby Tensor and its Physical
Meaning in General Inclusion Problems
Philosophical Magazine Letters, 80, pp.367-370, 2000.

S. Onaka, T. Fujii, Y. Suzuki and M. Kato
Application of the Average Field Method to the Prediction of Stable Shapes of
Coherent Precipitates under Uniaxial Stresses
Materials Science and Engineering A, 285, pp.246-252, 2000.