Member

Faculty

Student

Publication

<2021>
130. Yutaka Oya, Gota Kikugawa, Tomonaga Okabe and Toshihiro Kawakatsu, "Density functional theory for polymer phase separations induced by coupling of chemical reaction and elastic stress", Advanced Theory and Simulations, in press. PDF file
129. Takeki Yamamotoa, Tomonaga Okabeb, Kenjiro Terada, "Numerical simulation for deformation of laminates combining the novel shell element with the decoupled two-scale viscoelastic analysis of FRP", International Journal of Solids and Structures, in press PDF file
128. Yoshiaki Kawagoe, Gota Kikugawa, Keiichi Shirasu, and Tomonaga Okabe, "Thermoset resin curing simulation using quantum chemical reaction path calculation and dissipative particle dynamics", Soft Matter 17 (2021) 6707–6717. PDF file
127. Sota Onodera, Junpei Tsuyuki, Tomonaga Okabe, "Micromechanical modeling for the in-plane mechanical behavior of orthogonal 3D woven ceramic matrix composites with transverse and matrix cracking", International Journal of Damage Mechanics, in press. PDF file
126. R. Higuchi, S. Warabi, A. Yoshimura, T. Nagashima, T. Yokozeki, T. Okabe, "Experimental and numerical study on progressive damage and failure in composite laminates during open-hole compression tests", Composites: Part A 145 (2021) 106300. PDF file
125. Nobuyuki Odagiri, Keiichi Shirasu, Yoshiaki Kawagoe, Gota Kikugawa, Yutaka Oya, Naoki Kishimoto, Fumio S. Ohuchi, Tomonaga Okabe, "Amine/epoxy stoichiometric ratio dependence of crosslinked structure and ductility in amine-cured epoxy thermosetting resins", Journal of Applied Polymer Science 138(23):50542. PDF file
124. Risa Saito, Yosuke Yamanaka, Seishiro Matsubara, Tomonaga Okabe, Shuji Moriguchi, Kenjiro Terada, " A decoupling scheme for two-scale finite thermoviscoelasticity with thermal and cure-induced deformations", International Journal for Numerical Methods in Engineering, 122, (2021) 1133–1166 PDF file
123. Yutaka Oya, Masahiro Nakazawa, Keiichi Shirasu, Yuki Hino, Inuyama Kyosuke, Gota Kikugawa, Jing Li, Riichi Kuwahara, Naoki Kishimoto, Hiroki Waizumi, Masaaki Nishikawa, Anthony Waas, Nobuyuki Odagiri, Andrew Koyanagi, Marco Salviato, Tomonaga Okabe, " Molecular dynamics simulation of cross-linking processes and material properties for epoxy resins using first-principle calculation combined with global reaction route mapping algorithms", Chemical Physics Letters 762 (2021) 138104 PDF file
122. Go Yamamoto,Keita Koizumi,Takahiro Nakamura,Noriyuki Hirano,Tomonaga Okabe, "Tensile-Strength-Controlling Factors in Unidirectional Carbon Fiber Reinforced Plastic Composites", Composites: Part A 140 (2021) 106140 PDF file
121. Shugo DATE, Yoshiaki ABE, Takeki YAMAMOTO and Tomonaga OKABE, "Fluid-structural Design Analysis for Composite Aircraft Wings with Various Fiber Properties", Journal of Fluid Science and Technology Vol.16, No.1, 2021 PDF file
<2020>
120. Sota Onodera, Tomonaga Okabe, "Analytical model for determining effective stiffness and mechanical behavior of polymer matrix composite laminates using continuum damage mechanics", International Journal of Damage Mechanics 2020, Vol. 29(10) 1512–1542PDF file
119. R. Higuchi, S. Warabi, W. Ishibashi, T. Okabe,"Experimental and Numerical Investigations into the Push-out Delamination in Drilling of Composite Laminates", Composites Science and Technology 198 (2020) 108238 PDF file
118. Yue Huang, Jingtian Zhang, Edwin S. Jiang, Yutaka Oya, Akinori Saeki, Gota Kikugawa, Tomonaga Okabe, and Fumio S. Ohuchi, "Structure-Property Correlation Study for Organic Photovoltaic Polymer Materials Using Data Science Approach", J. Phys. Chem. C 2020, 124, 12871−12882 PDF file
117. R. Higuchi, R. Aoki, T. Yokozeki and T. Okabe, "Evaluation of the in-situ damage and strength properties of thin-ply CFRP laminates by micro-scale finite element analysis ", Advanced Composite Materials, 29, 5 (2020), 475-493 PDF file
116. Yoshiaki Abe, Takayuki Konishi, Tomonaga Okabe,"Numerical Simulation of Wake Deflection Control around NACA0012 Airfoil using Active Morphing Flaps ", Journal of Flow Control, Measurement & Visualization, 2020, 8, 121-133PDF file
115. Yuta Kumagai, Sota Onodera, Marco Salviato, Tomonaga Okabe,"Multiscale analysis and experimental validation of crack initiation in quasi-isotropic laminates", International Journal of Solids and Structures 193–194 (2020) 172–191 PDF file
114. Yutaka Oya, Tsubasa Matsumiya, Akira Ito, Ryosuke Matsuzaki and Tomonaga Okabe, "Gate Optimization for Resin Transfer Molding in Dual-Scale Porous Media: Numerical Simulation and Experiment Measurement", Journal of Composite Materials 2020, Vol. 54(16) 2131–2145 PDF file
<2019>
113. Jimin Qian, Nam Phuong Nguyen, Yutaka Oya, Gota Kikugawa, Tomonaga Okabe, Yue Huang and Fumio S. Ohuchi, "Introducing self-organized maps (SOM) as a visualization tool for materials research and education", Results in Materials 4 (2019) 100020PDF file
112. Sota Onodera and Tomonaga Okabe, "Three-dimensional analytical model for effective elastic constants of transversely isotropic plates with multiple cracks: application to stiffness reduction and steady-state cracking of composite laminates", Engineering Fracture Mechanics 219 (2019) 106595 PDF file
111. Gota Kikugawa, Yuta Nishimura, Koji Shimoyama, Taku Ohara, Tomonaga Okabe, Fumio Ohuchi, "Data Analysis of Multi-Dimensional Thermophysical Properties of Liquid Substances Based on Clustering Approach of Machine Learning", Chemical Physics Letters 728, (2019), 109-114 PDF file
110. Go Yamamoto, Miho Onodera, Keita Koizumi, Jun Watanabe, Haruki Okuda, Fumihiko Tanaka, Tomonaga Okabe, "Considering the stress concentration of fiber surfaces in the prediction of the tensile strength of unidirectional carbon fiber-reinforced plastic composites", Composites Part A 121 (2019) 499–509PDF file
109. Shigeki Yashiro, Daichi Nakashima, Yutaka Oya, Tomonaga Okabe, Ryosuke Matsuzaki, "Particle simulation of dual-scale flow in resin transfer molding for process analysis", Composites Part A 121 (2019) 283–288 PDF file
108. Ryosuke Matsuzaki, Tomohiro Ishikawa, Tomonaga Okabe, Yutaka Oya and Shigeki Yashiro, "Stiffness and permeability multi-objective optimization of carbon-fiber-reinforced plastic mesostructures using homogenization method", Journal of Composite Materials 2019, Vol. 53(13) 1865–1880 PDF file
107. Jing li, Sakamoto Jumpei, Hiroki Waizumi, Yutaka Oya, Yue Huang, Naoki Kishimoto, Tomonaga Okabe, "A multiscale model for the synthesis of thermosetting resins: From the addition reaction to cross-linked network formation", Chemical Physics Letters 720 (2019) 64–69 PDF file
106. Go Yamamoto and Tomonaga Okabe, "Numerical study for tensile strength prediction of unidirectional carbon fiber-reinforced composite considering fiber surface stress concentration ", Mechanical Engineering Journal, 6, (2019) 19-00020. PDF file
<2018>
105. J. Watanabe, F. Tanaka, R. Higuchi, H. Matsutani, H. Okuda and T.Okabe, "A study of stress concentrations around fiber breaks in unidirectional CF/epoxy composites using double-fiber fragmentation tests", Advanced Composite Materials, 1-13 PDF file
104. Yutaka OYA, Kyosuke Inuyama, Tomonaga Okabe, Jun Koyanagi & Ryosuke Matsuzaki , "Analysis of structure characteristics in laminated graphene oxide nanocomposites using molecular dynamics simulation", Advanced Composite Materials, 2018, 1-12 PDF file
103. Tomonaga Okabe, Sota Onodera, Yuta Kumagai and Yoshiko Nagumo, "Continuum damage mechanics modeling of composite laminates including transverse cracks", International Journal of Damage Mechanics, 27, 6 (2018) 877-895 PDF file
102. Haruki Okuda, Robert J. Young, Daniel Wolverson, Fumihiko Tanaka, Go Yamamoto, Tomonaga Okabe, "Investigating nanostructures in carbon fibres using Raman spectroscopy", Carbon 130 (2018) 178-184 PDF file
101. Go Yamamoto, Tomonaga Okabe, and Noriaki Ikenaga, "Fracture behavior of diamond-like carbon films deposited on polymer substrates", Journal of Vacuum Science & Technology A, 36, (2018), Article No. 02C101. PDF file
<2017>
100. Sota Onodera, Yoshiko Nagumo & Tomonaga Okabe, "Prediction for progression of transverse cracking in CFRP cross-ply laminates using Monte Carlo method", Advanced Composite Materials, 26,2017-isuue 5, 477-491. PDF file
99. R. Higuchi, T. Okabe, A. Yoshimura, T. E. Tay, "Progressive Failure under High-Velocity Impact on Composite Laminates; Experiment and Phenomenological Mesomodeling", Engineering Fracture Mechanics 178 (2017), 346-361. PDF file
98. R. Higuchi, T. Okabe, T. Nagashima, "Numerical simulation of progressive damage and failure in composite laminates using XFEM/CZM coupled approach", Composites Part A: Applied Science and Manufacturing 95(2017), 197-207 PDF file
97. Yutaka Oya, Gota Kikugawa, Tomonaga Okabe, "Clustering Approach for Multidisciplinary Optimum Design of Cross-Linked Polymer", Macromolecular Theory and Simulations, 26 (2017),1600072 PDF file , cover
96. Yuta Kumagai, Sota Onodera, Yoshiko Nagumo, Tomonaga Okabe, Kenichi Yoshioka, "Multiscale modeling of free-surface effect on crack formation inunidirectional off-axis laminates", Composites: Part A 98 (2017) 136–146. PDF file
95. Tomonaga Okabe, Yutaka Oya, Go Yamamoto, Junki Sato, Tsubasa Matsumiya, Ryosuke Matsuzaki, Shigeki Yashiro, Sigeru Obayashi, "Multi-objective optimization for resin transfer molding process", Composites: Part A 92 (2017) 1-9 PDF file
<2016>
94. Haruki Okuda, Robert J. Young, Fumihiko Tanaka, Jun Watanabe, Tomonaga Okabe, "Tensile failure phenomena in carbon fibres", Carbon 107 (2016) 474-481. PDF file
93. Tomonaga Okabe, Yutaka Oya, Koichi Tanabe, Gota Kikugawa, Kenichi Yoshioka, "Molecular dynamics simulation of crosslinked epoxy resins:Curing and mechanical properties", European Polymer Journal 80 (2016) 78–88. PDF file
92. R. Higuchi, T. Okabe, Y. Ohtake, T. Honda, Y. Ueda and S. Ogihara, "Numerical simulation of damage progression and fracture in structures made of 3D woven ceramic matrix composites", Advanced Composite Materials, 25, 3, (2016), 209-227.  PDF file
<2015>
91. Masashi Ishikawa, Yasuo Kogo, Jun Koyanagi, Fumihiko Tanaka, Tomonaga, Okabe, "Torsional modulus and internal friction of polyacrylonitrile- and pitch-based carbon fibers", Journal of Materials Science, 50, 21, (2015) pp 7018 - 7025. PDF file
90. Shigeki Yashiro and Tomonaga Okabe, "Smoothed particle hydrodynamics in a generalized coordinate system with a finite-deformation constitutive model", Int. J. Numer. Meth. Engng 2015; 103:781–797. PDF file
89. Tomonaga Okabe, Yuta Kumagai, Ryo Higuchi and Masaaki Nishikawa, "Onset of Matrix Cracking in Fiber Reinforced Polymer Composites: A Historical Review and a Comparison Between Periodic Unit Cell Analysis and Analytic Failure Criteria", Advanced Structured Materials 64, H. Altenbach et al. (eds.), Springer International Publishing Switzerland, (2015), 299-317 PDF file
88. T. Okabe, H. Imamura, Y. Sato, R. Higuchi, J. Koyanagi, R. Talreja, "Experimental and numerical studies of initial cracking in CFRP cross-ply laminates", Composites: Part A 68 (2015) 81–89. PDF file
<2014>
87. Y. Satoa, T. Okabea, R. Higuchi and K. Yoshioka, "Multiscale approach to predict crack initiation in unidirectional off-axis laminates", Advanced Composite Materials, 2014. Vol. 23, Nos. 5–6, 461–475 PDF file
86. J. Watanabe, F. Tanaka, H. Okuda and T. Okabe, "Tensile strength distribution of carbon fibers at short gauge lengths", Advanced Composite Materials, 2014. Vol. 23, Nos. 5–6, 535–550.PDF file
85. Fumihiko Tanaka, Tomonaga Okabe, Haruki Okuda Ian A. Kinloch Robert J. Young, "Factors controlling the strength of carbon fibers in tension", Composites Part A, 57 (2014) 88–94. PDF file
84. T. Okabe, "Recent studies on numerical modelling of damage progression in fibre-reinforced plastic composites", Mechanical Engineering Reviews, Vol.2, No.1 (2015), 1-11.PDF file
83. Jun Koyanagi, Yukihiro Sato, Toshiki Sasayama, Tomonaga Okabe, Satoru Yoneyama, "Numerical simulation of strain-rate dependent transition of transverse tensile failure mode in fiber-reinforced composites", Composites: Part A 56 (2014) 136–142. PDF file
82. Tomonaga Okabe, Toshiki Sasayama, Jun Koyanagi, "Micromechanical simulation of tensile failure of discontinuous fiber-reinforced polymer matrix composites using Spring Element Model", Composites: Part A 56 (2014) 64-71. PDF file
<2013>
81. Toshiki Sasayama, Tomonaga Okabe, Yoshiteru Aoyagi, Masaaki Nishikawa, "Prediction of failure properties of injection-molded short glass fiber-reinforced polyamide 6,6", Composites: Part A 52 (2013) 45-54. PDF file
80. Tomonaga Okabe, Tomohiro Takehara, Keisuke Inose, Noriyuki Hirano, Masaaki Nishikawa, Takuya Uehara, "Curing reaction of epoxy resin composed of mixed base resin and curing agent: Experiments and molecular simulation", Polymer 54 (2013) 4660-4668. PDF file
79. Fumihiko Tanaka, Tomonaga Okabe, Haruki Okuda, Ian A. Kinloch, Robert J. Young, "TThe effect of nanostructure upon the compressive strength of carbon fibres", J Mater Sci (2013) 48:2104–2110. PDF file
78. Fumihiko Tanaka, Tomonaga Okabe, Haruki Okuda, Masafumi Ise, Ian A. Kinloch, Tsutomu Mori, Robert J. Young, "The effect of nanostructure upon the deformation micromechanics of carbon fibres.", Carbon 52 (2013) 372-378. PDF file
<2012>
77. M. Hashimoto, T. Okabe, T. Sasayama, H. Matsutani, M. Nishikawa, "Prediction of tensile strength of discontinuous carbon fiber/polypropylene composite with fiber orientation distribution", Composites: Part A 43 (2012) 1791-1799. PDF file
76. Tomonaga Okabe, Hiroaki Matsutani, Takashi Honda, Shigeki Yashiro, ""Numerical simulation of microscopic flow in a fiber bundle using the moving particle semi-implicit method", Composites: Part A 43 (2012) 1765-1774. PDF file
75. S. C. Chowdhury, B. Z. (Gama) Haque, T. Okabe, J. W. Gillespie Jr, "Modeling the effect of statistical variations in length and diameter of randomly oriented CNTs on the properties of CNT reinforced nanocomposites", Composites: Part B 43 (2012) 1756-1762. PDF file
74. T. Okabe, T. Motani, M. Nishikawa and M. Hashimoto, "Numerical simulation of microscopic damage and strength of fiber-reinforced plastic composites", Advanced Composite Materials Volume 21, 2012 - Issue 2 147-163.PDF file
73. T. Okabe, S. Yashiro, "Damage detection in holed composite laminates using an embedded FBG sensor", Composites: Part A 43 (2012) 388-397. PDF file
72. Abreeza MANAP, Kazuhiro OGAWA and Tomonaga OKABE,"Numerical Analysis of Interfacial Bonding of Al-Si Particle and Mild Steel Substrate by Cold Spray Technique Using the SPH Method", Journal of Solid Mechanics and Materials Engineering Vol. 6, No. 3, 2012, 241-250 PDF file
<2011>
71. S. Yashiro, T. Okabe, "Estimation of fatigue damage in holed composite laminates using an embedded FBG sensor", Composites: Part A 42 (2011) 1962-1969.PDF file
70. T. Okabe, M. Nishikawa, H. Toyoshima, "A periodic unit-cell simulation of fiber arrangement dependence on the transverse tensile failure in unidirectional carbon fiber reinforced composites", International Journal of Solids and Structures 48 (2011) 2948-2959.PDF file
69. I. Taketa, T. Okabe, H. Matsutani and A. Kitano, "Flowability of unidirectionally arrayed chopped strands in compression molding", Composites: Part B 42 (2011) 1764-1769.PDF file
68. Akinori Yoshimura and Tomonaga Okabe, "Damage Growth Analysis in Particle-Reinforced Composite Using Cohesive Element", Advanced Composite Materials 20 (2011) 569-583.PDF file
67. S. Yashiro, T. Okabe, K. Matsushima, "A Numerical Approach for Injection Molding of Short-Fiber-Reinforced Plastics Using a Particle Method", Advanced Composite Materials 20 (2011) 503-517.PDF file
<2010>
66. I. Taketa, N. Sato, A. Kitano, M. Nishikawa, T. Okabe, "Enhancement of strength and uniformity in unidirectionally arrayed chopped strands with angled slits", Composites: Part A 41 (2010) 1639-1646.PDF file
65. Yuan Li, Ning Hu, Go Yamamoto, Zhongchang Wang, Toshiyuki Hashida, Hiroshi Asanuma, Chensong Dong, Tomonaga Okabe, Masahiro Arai, Hisao Fukunaga, "Molecular mechanics simulation of the sliding behavior between nested walls in a multi-walled carbon nanotube", Carbon 48 (2010) 2934-2940.PDF file
64. T. Okabe, M. Nishikawa, N. Takeda, "Micromechanics on the Rate-Dependent Fracture of Discontinuous Fiber-Reinforced Plastics", International Journal of DAMAGE MECHANICS, Vol.19—April 2010, 339-360.PDF file
63. Keiji Ogi, Tomonaga Okabe, Manabu Takahashi, Shigeki Yashiro, Akinori Yoshimura, Toshio Ogasawara, "Experimental characterization of high-speed impact damage behavior in a three-dimensionally woven SiC/SiC composite", Composites: Part A 41 (2010) 489-498.PDF file
62. M. Nishikawa and T. Okabe, "Microstructure-dependent fatigue damage process in short fiber reinforced plastics", International Journal of Solids and Structures 47 (2010) 398-406.PDF file
61. Sanjib Chandra Chowdhury, Tomonaga Okabe and Masaaki Nishikawa, "Effects of Vacancy Defects on the Interfacial Shear Strength of Carbon Nanotube Reinforced Polymer Composite", Journal of Nanoscience and Nanotechnology Vol. 10, 739-745, 2010.PDF file
60. T. Yamaguchi, T. Okabe and T. Kousaka, "Fatigue Simulation for Ti/GFRP Laminates using Cohesive Elements", Advanced Composite Materials 19 (2010) 107-122.PDF file
59. T. Okabe, K. Ishi, M. Nishikawa and N. Takeda, "Prediction of Tensile Strength of Unidirectional CFRP Composites", Advanced Composite Materials 19 (2010) 229-241. PDF file
<2009>
58. T. Yamaguchi, T. Okabe, S. Yashiro, "Fatigue simulation for Titanium/CFRP hybrid laminates using cohesive elements", Composites Science and Technology 69 (2009) 1968-1973.PDF file
57. I. Taketa, T. Okabe, A. Kitano, "Strength improvement in unidirectional arrayed chopped strands with interlaminar toughening", Composites: Part A 40 (2009) 1174-1178.PDF file
56. M. Nishikawa, T. Okabe and N. Takeda, "Periodic-cell simulations for the microscopic damage and strength properties of discontinuous carbon fiber-reinforced plastic composites", Advanced Composite Materials 18 (2009) 77-93.PDF file
55. Masaaki NISHIKAWA, Tomonaga OKABE and Nobuo TAKEDA, "Effect of the Microstructure on the Fracture Mode of Short-Fiber Reinforced Plastic Composites", Journal of Solid Mechanics and Materials Engineering Vol.3, No.8, 2009, 998-1009.PDF file
54. T. Okabe, M. Nishikawa, "GLS strength prediction of glass-fiber-reinforced polypropylene", Journal of Materials Science 44(1):331-334, January 2009 PDF file
53. M. Nishikawa, T. Okabe and T. Honda, "Effect of cross-links on the pullout of carbon nanotubes from amorphous polymer", Journal of Materials Science 44(1):339-341, December 2009 PDF file
52. Shigeki YASHIRO, Tomonaga OKABE, "Numerical Prediction of Fatigue Damage Progress in Holed CFRP Laminates Using Cohesive Elements", Journal of Solid Mechanics and Materials Engineering Vol3, No.11, 2009, 1212-1221.PDF file
51. Tomonaga OKABE and Shigeki YASHIRO, "Numerical Simulation for Predicting Fatigue Damage Progress in Notched CFRP Laminates by Using Cohesive Elements", Journal of Solid Mechanics and Materials Engineering Vol.3 No.11 2009, 1202-1211.PDF file
<2008>
50. T. Okabe, M. Nishikawa, W. A. Curtin, "Estimation of statistical strength distribution of Carborundum polycrystalline SiC fiber using the single fiber composite with consideration of the matrix hardening", Composite Science and Technology 68 (2008) 3067-3072. PDF file
49. I. Taketa, T. Okabe, A. Kitano, "A new compression-molding approach using unidirectionally arrayed chopped strands", Composites: Part A 39 (2008) 1884-1890.PDF file
48. N. Hu, Y. Zemba, T. Okabe, C. Yan, H. Fukunaga, A. M. Elmarakbi, "A new cohesive model for simulating delamination propagation in composite laminates under transverse loads", Mechanics of Materials 40 (2008) 920-935. PDF file
47. T. Okabe, M. Nishikawa, N. Takeda, "Numerical modeling of progressive damage in fiber reinforced plastic cross-ply laminates", Composites Science and Technology 68 (2008) 2282 - 2289. PDF file
46. M. Nishikawa, T. Okabe, N. Takeda and W. A. Curtin, "Micromechanics of the fragmentation process in single-fiber composites", Modeling and Simulation in Materials Science and Engineering 16 (2008) 055009. PDF file
45. M. Nishikawa, T. Okabe, K. Hemmi, N. Takeda, "Micromechanical modeling of the microbond test to quantify the interfacial properties in fiber-reinforced composites", International Journal of Solids and Structures 45 (2008) 4098-4113. PDF file
44. M. Nishikawa, T. Okabe, N. Takeda, "Determination of interface properties from experiments on the fragmentation process in single-fiber composites", Materials Science and Engineering A 480 (2008) 549-557. PDF file
43. Shigeki YASHIRO, Junji TAKATSUBO, Nobuyuki TOYAMA, Tomonaga OKABE, Nobuo TAKEDA, "Nondestructive Evaluation of Holed CFRP Laminates by a New Technique to Visualize Propagation of Ultrasonic Waves", Journal of Solid Mechanics and Materials Engineering Vol. 2, No. 3 (2008) 333-341. PDF file
<2007>
42. N. Hu, K. Nunoya, D. Pan, T. Okabe, H. Fukunaga, "Prediction of buckling characteristics of carbon nanotubes", International Journal of Solids and Structures 44 (2007) 6535-6550. PDF file
41. Masaaki Nishikawa, Tomonaga Okabe, Nobuo Takeda, "Numerical simulation of interlaminar damage propagation in CFRP cross-ply laminates under transverse loading", International Journal of Solids and Structures 44 ( 2007) 3101-3113. (19th hottest article in Science direct in January-March 2007 ) PDF file
40. S. C. Chowdhury, T. Okabe, "Computer simulation of carbon nanotube pull-out from polymer by the molecular dynamics method", Composites: Part A 38 (2007) 747-754. PDF file
39. S. Yashiro, T. Okabe, N. Takeda, "Damage identification in a holed CFRP laminate using a chirped fiber Bragg grating sensor", Composites Science and Technology 67 (2007) 286-295. PDF file
38. S. Yashiro, T. Okabe, N. Toyama, N. Takeda, "Monitoring damage in holed CFRP laminates using embedded chirped FBG sensors", International Journal of Solids and Structures 44 (2007) 603-613. PDF file
37. Sayaka OKABE , Nobutada OHNO and Tomonaga OKABE, "Influence of Matrix Plasticity on Local Stress Concentrations Near Loaded Fiber Breaks", Journal of Solid Mechanics and Materials Engineering Vol. 1, No. 1, 2007, 102-113. PDF file
36. S. YASHIRO, K. MURAI, T. OKABE and N. TAKEDA, "Numerical study for identifying damage in open-hole composites with embedded FBG sensors and its application to experiment results", Advanced Composite Materials Vol. 16, No. 2, pp.115-134 (2007) PDF file
35. AKINORI YOSHIMURA, SHIGEKI YASHIRO, TOMONAGA OKABE and NOBUO TAKEDA, "Characterization of Tensile Damage Progress in Stitched CFRP Laminates", Advanced Composite Materials Vol.16, No. 3, pp.223-244 (2007) PDF file
<2006>
34. Tomonaga Okabe, Masaaki Nishikawa, Nobuo Takeda, Hideki Sekine, "Effect of matrix hardening on the tensile strength of alumina fiber-reinforced aluminum matrix composites", Acta Materialia 54 (2006) 2557-2566. PDF file
33. N. Takeda, S. Yashiro, T. Okabe, "Estimation of the damage patterns in notched laminates with embedded FBG sensors", Composites Science and Technology 66 (2006) 684-693. PDF file
32. Hideki Sekine, Shin-Etsu Fujimoto, Tomonaga Okabe, Nobuo Takeda, Toshimitsu Yokobori, Jr., "Structural Health Monitoring of Cracked Aircraft Panels Repaired with Bonded Patches Using Fiber Bragg Grating Sensors", Applied Composite Materials 13(2):87-98 January 2006. PDF file
31. Junji NODA, Tomonaga OKABE, Nobuo TAKEDA and Masao SHIMIZU, "Tensile strength of CFRP cross-ply laminates containing transverse cracks", Advanced Composite Materials, 15 (2006), 81-93. PDF file
30. KOICHI GODA, TOMONAGA OKABE and NOBUO TAKEDA, "A strength reliability model of unidirectional fiber-reinforced ceramic matrix composites by Markov process", Advanced Composite Materials Vol. 15, No. 3, pp.263-285 (2006) PDF file
<2005>
29. N. Toyama, S. Yashiro, J. Takatsubo, T. Okabe, "Stiffness evaluation and damage identification in composite beam under tension using Lamb waves", Acta Materialia 53 (2005) 4389-4397. PDF file
28. T. Okabe, H. Sekine, K. Ishii, M. Nishikawa, N. Takeda, "Numerical method for failure simulation of unidirectional fiber-reinforced composites with spring element model", Composites Science and Technology 65 (2005) 921-933. PDF file
27. S. Yashiro, N. Takeda, T. Okabe, H. Sekine, "A new approach to predicting multiple damage states in composite laminates with embedded FBG sensors", Composites Science and Technology 65 (2005) 659-667. PDF file
<2004>
26. N. TOYAMA, T. OKABE, "Effects of tensile strain and transverse cracks on Lamb-wave velocity in cross-ply FRP laminates", JOURNAL OF MATERIALS SCIENCE 39 (2004) 7365-7367. PDF file
25. T. Okabe, H. Sekine, J. Noda, M. Nishikawa, N. Takeda, "Characterization of tensile damage and strength in GFRP cross-ply laminates", Materials Science and Engineering A 383 (2004) 381-389. PDF file
24. N. Ohno, S. Okabe, T. Okabe, "Stress concentrations near a fiber break in unidirectional composites with interfacial slip and matrix yielding", International Journal of Solids and Structures 41 (2004) 4263-4277. PDF file
23. S. Okabe, N. Ohno and T. Okabe, "Analytical Solutions for Stress Concentrations near a Fiber Break in Unidirectional Elastoplastic Composites", Key Engineering Materials Vols. 274-276 (2004) pp. 1005-1010. PDF file
<2003>
22. Z. Xia, T. Okabe, J. B. Park, W. A. Curtin, N. Takeda, "Quantitative damage detection in CFRP composites: coupled mechanical and electrical models", Composites Science and Technology 63 (2003) 1411-1422. PDF file
21. N. Toyama, J. Noda, T. Okabe, "Quantitative damage detection in cross-ply laminates using Lamb wave method", Composites Science and Technology 63 (2003) 1473-1479. PDF file
20. N. TOYAMA, T. OKABE, N. TAKEDA, "Lamb wave evaluation and localization of transverse cracks in cross-ply laminates", JOURNAL OF MATERIALS SCIENCE 38 (2003) 1765-1771. PDF file
19. Tomonaga OKABE and Kei URABE, "MONITORING OF FILLER DISTRIBUTION IN RESIN WITH AN ELECTROMAGNETIC WAVE TRANSMISSION LINE", Advanced Composites Letters, Vol.12, No.2 (2003) 63-68. PDF file
18. Jae Beom Park, Tomonaga Okabe and Nobuo Takeda, "New concept for modeling the electromechanical behavior of unidirectional carbon-fiber-reinforced plastic under tensile loading", Smart Materials and Structures 12 (2003) 105-114. PDF file
<2002>
17. T. Okabe, N. Takeda, "Size effect on tensile strength of unidirectional CFRP composites-experiment and simulation", Composites Science and Technology 62 (2002) 2053-2064. PDF file
16. T. Okabe, N. Takeda, "Elastoplastic shear-lag analysis of single-fiber composites and strength prediction of unidirectional multi-fiber composites", Composites: Part A 33 (2002) 1327-1335. PDF file
15. Z. Xia, W. A. Curtin, T. Okabe, "Green's function vs. shear-lag models of damage and failure in fiber composites", Composites Science and Technology 62 (2002) 1279-1288. PDF file
14. Z. Xia, T. Okabe, W. A. Curtin, "Shear-lag versus finite element models for stress transfer in fiber-reinforced composites", Composites Science and Technology 62 (2002) 1141-1149. PDF file
13. Kei Urabe, Tomonaga Okabe, Hiroshi Tsuda, "Monitoring of resin flow and cure with an electromagnetic wave transmission line using carbon fiber as conductive elements", Composites Science and Technology 62 (2002) 791-797. PDF file
12. NOBUYUKI TOYAMA, TOMONAGA OKABE, NOBUO TAKEDA, TERUO KISHI, "Effect of transverse cracks on lamb wave velocity in CFRP cross-ply laminates", JOURNAL OF MATERIALS SCIENCE LETTER, 21, 2002, 271-273. PDF file
11. J. B. Park, T. Okabe, N. Takeda, W. A. Curtin, "Electromechanical modeling of unidirectional CFRP composites under tensile loading condition", Composites: Part A 33 (2002) 267-275. PDF file
10. FANG MING ZHAO, TOMONAGA OKABE and NOBUO TAKEDA, "Effect of matrix yield properties on fragmentation behavior of single fiber composites", Composite Interfaces, Vol.9, No.3, pp.289-308 (2002). PDF file
<2001>
9. Tomonaga Okabe, Nobuo Takeda, "Estimation of strength distribution for a fiber embedded in a single-fiber composite: experiments and statistical simulation based on the elasto-plastic shear-lag approach", Composites Science and Technology 61 (2001) 1789-1800. PDF file
8. T. Okabe, N. Takeda, Y. Kamoshida, M. Shimizu, W. A. Curtin, "A 3D shear-lag model considering micro-damage and statistical strength prediction of unidirectional fiber-reinforced composites", Composites Science and Technology 61 (2001) 1773-1787. PDF file
7. M. Yanaka, Y. Tsukahara, T. Okabe, N. Takeda, "Statistical Analysis of Multiple Cracking Phenomenon of a SiOx Thin Film on a Polymer Substrate", JOURNAL OF APPLIED PHYSICS Vol.90, No.2 (2001) 713-719. PDF file
6. TOSHIMICHI OGISU, NORIO ANDO, JUNJI TAKAKI, TOMONAGA OKABE AND NOBUO TAKEDA, "Improved Surface Treatment of SMA Foils and Damage Suppression of SMA-Foil Embedded CFRP Laminates", JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, Vol.12-April 2001, 265-270. PDF file
<2000>
5. Fang Ming Zhao, Tomonaga Okabe, Nobuo Takeda, "The estimation of statistical fiber strength by fragmentation tests of single-fiber compositess", Composites Science and Technology 60 (2000) 1965-1974. PDF file
4. Kazunori Misawa, Tomonaga Okabe, Masaaki Yanaka, Masao Shimizu, Nobuo Takeda, "A Theory for Multi Damage Evaluation of TiN Thin Film", Materials Research Society Symposium Proceedings, 653 (2000), Z7.10.1-6.
<1999>
3. T. OKABE, N. TAKEDA, J. KOMOTORI, M. SHIMIZU and W.A.CURTIN, "A NEW FRACTURE MECHANICS MODEL FOR MULTIPLE MATRIX CRACKS OF SiC FIBER REINFORCED BRITTLE-MATRIX COMPOSITES", Acta Materialia Vol.47 No.17, pp.4299-4309, 1999. PDF file
2. T. OKABE, J. KOMOTORI, M. SHIMIZU, N. TAKEDA, "Mechanical behavior of SiC fiber reinforced brittle-matrix composites", JOURNAL OF MATERIALS SCIENCE 34 (1999) 3405–3412.PDF file
1. T. Okabe, N.Takeda, J. Komotori, M. Shimizu, K. Imai and Y. Imai, "Tensile matrix cracking behavior of Hi-Nicalon fiber/glass matrix cross-ply laminate composites", Key Engineering Materials Vols. 164-165 (1999) pp.221-224. PDF file