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Featured researches published by Tomonaga Okabe.


American Society for Composites 2017 | 2017

XFEM Analysis of Progressive Damage and Failure in CFRP Laminates under In-Plane and Out-of-Plane Loading Conditions

Ryo Higuchi; Tomonaga Okabe; Akinori Yoshimura; Toshio Nagashima

The aim of this study is to examine the capability of quasi-3D extended finite element method (XFEM) approach under in-plane tension, compression, and out-ofplane loadings. This study is based upon the previous works by the authors [1-3] but damage models are updated to predict longitudinal failure, matrix crack, and delamination under both of tensile and compressive loadings. The validity of proposed methodology was tested against the open-hole tension/compression (OHT/OHC) and quasi-static indentation (QSI) tests. Predicted results are compared with experiments in terms of nonlinearity, internal damage, and strength.


Journal of the Japan Society for Composite Materials | 2007

Finite Element Analysis for Microscopic Damage in Single-Fiber Composites Using a Cohesive Zone Model

Masaaki Nishikawa; Tomonaga Okabe; Nobuo Takeda


Archive | 2007

Bonded part peeling shape identification device

Toshimichi Ogisu; Tomonaga Okabe; Hideki Sekine


Archive | 2006

BONDED PART SEPARATION SHAPE IDENTIFICATION DEVICE

Toshimitsu Ogisu; Tomonaga Okabe; Hideki Sekine; 朋永 岡部; 敏充 荻巣; 英樹 関根


Journal of the Japan Society for Composite Materials | 2006

Numerical Study for Identifying Damage in Open Hole Composites with Embedded FBG Sensors and Its Application to the Experimental Results

Shigeki Yashiro; Kazue Murai; Tomonaga Okabe; Nobuo Takeda


The Proceedings of the Materials and processing conference | 2016

Searching optimum heat fusion condition of thermoplastic using MD simulation based on design of experiment

Kento Takeuchi; Ryosuke Matsuzaki; Tomonaga Okabe; Yutaka Oya


The Proceedings of the Materials and processing conference | 2016

Effects on stiffness and permeability given by the meso structure of fiber reinforced composites.

Tomohiro Ishikawa; Ryosuke Matsuzaki; Tomonaga Okabe; Shigeki Yashiro


The Proceedings of the Symposium on Micro-Nano Science and Technology | 2015

30pm1-F-5 Atomistic modeling and mechanical property prediction of heat curing resin : Approach by combination of Materials Studio and Abaqus

Satoru Yamamoto; Riichi Kuwahara; Tetsuya Nagata; Tsuguo Morisato; Tomonaga Okabe; Ryosuke Matsuzaki


The Proceedings of the Materials and Mechanics Conference | 2015

PS0004-173 Extraction of design guidelines of CFRP meso structure by multi-objective optimization using the homogenization method

Tomohiro Ishikawa; Ryosuke Matsuzaki; Tomonaga Okabe; Shigeki Yashiro


Archive | 2012

CFRP積層板に対する?速?翔体衝突現象のシミュレーション

彰記 吉村; 一哉 長倉; 朋永 岡部; 俊夫 小笠原; 隼人 中谷; 慎二 荻原; Akinori Yoshimura; Kazuya Nagakura; Tomonaga Okabe; Toshio Ogasawara; Hayato Nakatani; Shinji Ogihara

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Ryosuke Matsuzaki

Tokyo University of Science

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Kento Takeuchi

Tokyo University of Science

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Nobuyuki Toyama

National Institute of Advanced Industrial Science and Technology

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