Jun Koyanagi

2023

Automatic strengthening in thickness direction using lap joint of carbon fiber for fused filament fabrication 3D printing

Kajimoto, J., Fujii, A., Maruyama, Y., Kajita, H., Koyanagi, J. & Matsuzaki, R., 1 1月 2023, In: Composite Structures. 303, 116290.

研究成果: Article › 査読

Numerical and Experimental Studies for Fatigue Damage Accumulation of CFRP Cross-Ply Laminates Based on Entropy Failure Criterion

Deng, H., Mochizuki, A., Fikry, M., Abe, S., Ogihara, S. & Koyanagi, J., 1月 2023, In: Materials. 16, 1, 388.

研究成果: Article › 査読

Open Access

Numerical simulation for the tensile failure of randomly oriented short fiber reinforced plastics based on a viscoelastic entropy damage criterion

Kagawa, H., Umezu, Y., Sakaue, K. & Koyanagi, J., 3月 2023, In: Composites Part C: Open Access. 10, 100342.

研究成果: Article › 査読

Open Access

2022

A Possibility for Quantitative Detection of Mechanically-Induced Invisible Damage by Thermal Property Measurement via Entropy Generation for a Polymer Material

Sakai, T., Takase, N., Oya, Y. & Koyanagi, J., 1 2月 2022, In: Materials. 15, 3, 737.

研究成果: Article › 査読

Open Access

7 被引用数 (Scopus)

Automated interlaminar reinforcement with thickness directional fiber arrangement for 3D printing

Kajimoto, J., Koyanagi, J., Maruyama, Y., Kajita, H. & Matsuzaki, R., 15 4月 2022, In: Composite Structures. 286, 115321.

研究成果: Article › 査読

2 被引用数 (Scopus)

Effect of Electrostatic Interactions on the Interfacial Energy between Thermoplastic Polymers and Graphene Oxide: A Molecular Dynamics Study

Morita, M., Oya, Y., Kato, N., Mori, K. & Koyanagi, J., 1 7月 2022, In: Polymers. 14, 13, 2579.

研究成果: Article › 査読

Open Access

4 被引用数 (Scopus)

Evaluation of Microscopic Damage of PEEK Polymers under Cyclic Loadings Using Molecular Dynamics Simulations

Iwamoto, S., Oya, Y. & Koyanagi, J., 11月 2022, In: Polymers. 14, 22, 4955.

研究成果: Article › 査読

Open Access

Evaluation of viscoelastic non-isochoric plastic behavior of PBT and PA6

Sato, Y., Masumizu, S., Sakaue, K., Koyanagi, J., Ohtani, A. & Sakai, T., 2022, (Accepted/In press) In: Mechanics of Time-Dependent Materials.

研究成果: Article › 査読

1 被引用数 (Scopus)

Finite element analysis of edge gripper processing of carbon fiber composite cables

Fukui, K., Tadachi, T., Yamashita, H., Koyanagi, J. & Ogihara, S., 2022, (Accepted/In press) In: Advanced Composite Materials.

研究成果: Article › 査読

1 被引用数 (Scopus)

Finite element model for simulating entropy-based strength-degradation of carbon-fiber-reinforced plastics subjected to cyclic loadings

Koyanagi, J., Mochizuki, A., Higuchi, R., Tan, V. B. C. & Tay, T. E., 12月 2022, In: International Journal of Fatigue. 165, 107204.

研究成果: Article › 査読

Open Access

3 被引用数 (Scopus)

Numerical simulation of ultrasonic welding for CFRP using energy director

Koyanagi, J., Takamura, M., Wakayama, K., Uehara, K. & Takeda, S., 2022, In: Advanced Composite Materials. 31, 4, p. 428-441 14 p.

研究成果: Article › 査読

Open Access

1 被引用数 (Scopus)

2021

Direct FE² for simulating strain-rate dependent compressive failure of cylindrical CFRP

Koyanagi, J., Kawamoto, K., Higuchi, R., Tan, V. B. C. & Tay, T. E., 7月 2021, In: Composites Part C: Open Access. 5, 100165.

研究成果: Article › 査読

Open Access

6 被引用数 (Scopus)

Formulation of non-linear viscoelastic–viscoplastic constitutive equation for polyamide 6 resin

Koyanagi, J., Hasegawa, K., Ohtani, A., Sakai, T. & Sakaue, K., 2月 2021, In: Heliyon. 7, 2, e06335.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

Molecular dynamics simulation for evaluating fracture entropy of a polymer material under various combined stress states

Takase, N., Koyanagi, J., Mori, K. & Sakai, T. U., 2 4月 2021, In: Materials. 14, 8, 1884.

研究成果: Article › 査読

Open Access

6 被引用数 (Scopus)

Multi-Timescale Simulations of Temperature Elevation for Ultrasonic Welding of CFRP with Energy Director

Takamura, M., Uehara, K., Koyanagi, J. & Takeda, S., 1 12月 2021, In: Journal of Multiscale Modeling. 12, 4, 2143003.

研究成果: Article › 査読

4 被引用数 (Scopus)

Numerical simulation of compressive failure of carbon-fiber-reinforced plastic laminates with various hole shapes

Shimizu, S., Sato, M., Koyanagi, J., Suemasu, H. & Kogo, Y., 2021, In: Advanced Composite Materials. 30, 1, p. 58-75 18 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

Residual strength prediction for unidirectional CFRP using a nonlinear viscoelastic constitutive equation considering entropy damage

Sato, M., Hasegawa, K., Koyanagi, J., Higuchi, R. & Ishida, Y., 2月 2021, In: Composites Part A: Applied Science and Manufacturing. 141, 106178.

研究成果: Article › 査読

Open Access

11 被引用数 (Scopus)

2020

Analysis of three-phase structure of epoxy resin/CNT/Graphene by molecular simulation

Naito, S., Koyanagi, J., Komukai, T. & Uno, T., 8月 2020, In: Polymers. 12, 8, 1821.

研究成果: Article › 査読

Open Access

2 被引用数 (Scopus)

Evaluation of interface properties of carbon fiber/resin using the full atomistic model considering the electric charge state

Kasahara, S., Koyanagi, J., Mori, K. & Yabe, M., 2020, In: Advanced Composite Materials. p. 1-12 12 p.

研究成果: Article › 査読

Open Access

12 被引用数 (Scopus)

Molecular dynamics simulation for the quantitative prediction of experimental tensile strength of a polymer material

Koyanagi, J., Takase, N., Mori, K. & Sakai, T., 10月 2020, In: Composites Part C: Open Access. 2, 100041.

研究成果: Article › 査読

Open Access

10 被引用数 (Scopus)

Multi-scale numerical simulation of impact failure for cylindrical CFRP

Sawamura, Y., Yamazaki, Y., Yoneyama, S. & Koyanagi, J., 2020, (Accepted/In press) In: Advanced Composite Materials.

研究成果: Article › 査読

9 被引用数 (Scopus)

Significant reduction of interface trap density of SiC PMOSFETs by post-oxidation H₂O annealing processes with different oxygen partial pressures

Koyanagi, J., Nishida, M. & Kita, K., 1 7月 2020, In: Japanese Journal of Applied Physics. 59, SMMA06.

研究成果: Article › 査読

5 被引用数 (Scopus)

2019

Estimation of biaxial tensile and compression behavior of polypropylene using molecular dynamics simulation

Kitamura, R., Kageyama, T., Koyanagi, J. & Ogihara, S., 4 3月 2019, In: Advanced Composite Materials. 28, 2, p. 135-146 12 p.

研究成果: Article › 査読

10 被引用数 (Scopus)

Evaluation of the mechanical properties of carbon fiber/polymer resin interfaces by molecular simulation

Koyanagi, J., Itano, N., Yamamoto, M., Mori, K., Ishida, Y. & Bazhirov, T., 2 11月 2019, In: Advanced Composite Materials. 28, 6, p. 639-652 14 p.

研究成果: Article › 査読

21 被引用数 (Scopus)

Fabrication of well-isolated graphene and evaluation of thermoelectric performance of polyaniline–graphene composite film

Ube, T., Koyanagi, J., Kosaki, T., Fujimoto, K., Yokozeki, T., Ishiguro, T. & Nishio, K., 15 3月 2019, In: Journal of Materials Science. 54, 5, p. 3904-3913 10 p.

研究成果: Article › 査読

15 被引用数 (Scopus)

Numerical simulation for strain rate and temperature dependence of transverse tensile failure of unidirectional carbon fiber-reinforced plastics

Sato, M., Shirai, S., Koyanagi, J., Ishida, Y. & Kogo, Y., 1 12月 2019, In: Journal of Composite Materials. 53, 28-30, p. 4305-4312 8 p.

研究成果: Article › 査読

14 被引用数 (Scopus)

2018

Analysis of structure characteristics in laminated graphene oxide nanocomposites using molecular dynamics simulation

Oya, Y., Inuyama, K., Okabe, T., Koyanagi, J. & Matsuzaki, R., 4 7月 2018, In: Advanced Composite Materials. 27, 4, p. 427-438 12 p.

研究成果: Article › 査読

12 被引用数 (Scopus)

A Numerical simulation of delamination caused by internal gas pressure for mid-density CFRP

Koyanagi, J., Shinba, K., Fukuda, Y., Hirai, K., Nakazato, A., Yoshimura, A., Aoki, T. & Kogo, Y., 12月 2018, In: Composites Part A: Applied Science and Manufacturing. 115, p. 255-263 9 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

Numerical simulation of dynamic failure behavior for cylindrical carbon fiber reinforced polymer

Yamazaki, Y., Koyanagi, J., Sawamura, Y., Ridha, M., Yoneyama, S. & Tay, T. E., 1 11月 2018, In: Composite Structures. 203, p. 934-942 9 p.

研究成果: Article › 査読

8 被引用数 (Scopus)

Stretchable and insulating characteristics of chemically bonded graphene and carbon nanotube composite materials

Watanabe, R., Matsuzaki, R., Endo, H. & Koyanagi, J., 1 1月 2018, In: Journal of Materials Science. 53, 2, p. 1148-1156 9 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Temperature dependence of interfacial strength of carbon-fiber-reinforced temperature-resistant polymer composites

Sato, M., Koyanagi, J., Lu, X., Kubota, Y., Ishida, Y. & Tay, T. E., 15 10月 2018, In: Composite Structures. 202, p. 283-289 7 p.

研究成果: Article › 査読

18 被引用数 (Scopus)

The enhancement effect of carbon-based nano-fillers/polyaniline hybrids on the through-thickness electric conductivity of carbon fiber reinforced polymer

Cheng, X., Yokozeki, T., Wu, L., Koyanagi, J., Wang, H. & Sun, Q., 2月 2018, In: Composites Part A: Applied Science and Manufacturing. 105, p. 281-290 10 p.

研究成果: Article › 査読

23 被引用数 (Scopus)

2017

Evaluation of the interfacial strength of carbon-fiber-reinforced temperature-resistant polymer composites by the micro-droplet test

Sato, M., Imai, E., Koyanagi, J., Ishida, Y. & Ogasawara, T., 3 9月 2017, In: Advanced Composite Materials. 26, 5, p. 465-476 12 p.

研究成果: Article › 査読

19 被引用数 (Scopus)

Local out-of-plane deformation of CFRP ablator subjected to rapid heating

Koyanagi, J., Fukuda, Y., Yoneyama, S., Hirai, K. I., Yoshimura, A., Aoki, T. & Ogasawara, T., 2 1月 2017, In: Advanced Composite Materials. 26, 1, p. 23-34 12 p.

研究成果: Article › 査読

7 被引用数 (Scopus)

Molecular dynamics study of the interfacial strength between carbon fiber and phenolic resin

Niuchi, T., Koyanagi, J., Inoue, R. & Kogo, Y., 2 11月 2017, In: Advanced Composite Materials. 26, 6, p. 569-581 13 p.

研究成果: Article › 査読

24 被引用数 (Scopus)

Monte carlo simulations for blue-phase structure in liquid crystals

Koyanagi, J., Takeguchi, K., Murai, K., Furue, H. & Masuda, N., 13 10月 2017, In: Molecular crystals and liquid crystals. 656, 1, p. 54-65 12 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

The decoupling electrical and thermal conductivity of fullerene/polyaniline hybrids reinforced polymer composites

Cheng, X., Yokozeki, T., Yamamoto, M., Wang, H., Wu, L., Koyanagi, J. & Sun, Q., 26 5月 2017, In: Composites Science and Technology. 144, p. 160-168 9 p.

研究成果: Article › 査読

35 被引用数 (Scopus)

2016

Electrical conductivity and interlaminar shear strength enhancement of carbon fiber reinforced polymers through synergetic effect between graphene oxide and polyaniline

Cheng, X., Yokozeki, T., Wu, L., Wang, H., Zhang, J. M., Koyanagi, J., Weng, Z. & Sun, Q., 1 11月 2016, In: Composites Part A: Applied Science and Manufacturing. 90, p. 243-249 7 p.

研究成果: Article › 査読

43 被引用数 (Scopus)

Estimation of the highest surface temperature for CFRP ablator by raman analysis

Koyanagi, J., Hirai, K. I., Nakazato, A., Inoue, R. & Ube, T., 2016, In: Transactions of the Japan Society for Aeronautical and Space Sciences. 59, 6, p. 364-370 7 p.

研究成果: Article › 査読

2 被引用数 (Scopus)

Highly conductive graphene oxide/polyaniline hybrid polymer nanocomposites with simultaneously improved mechanical properties

Cheng, X., Kumar, V., Yokozeki, T., Goto, T., Takahashi, T., Koyanagi, J., Wu, L. & Wang, R., 1 3月 2016, In: Composites Part A: Applied Science and Manufacturing. 82, p. 100-107 8 p.

研究成果: Article › 査読

50 被引用数 (Scopus)

Measurement of discontinuous displacement/strain using mesh-based digital image correlation

Yoneyama, S., Koyanagi, J. & Arikawa, S., 3 7月 2016, In: Advanced Composite Materials. 25, 4, p. 329-343 15 p.

研究成果: Article › 査読

14 被引用数 (Scopus)

Three-dimensional porous graphene-based ultra-lightweight aerofoam exhibiting good thermal insulation

Kim, W. S., Moon, S. Y., Koyanagi, J. & Ogasawara, T., 19 12月 2016, In: Advanced Composite Materials. 25, p. 105-113 9 p.

研究成果: Article › 査読

13 被引用数 (Scopus)

Time dependence of mesoscopic strain distribution for triaxial woven carbon-fiber-reinforced polymer under creep loading measured by digital image correlation

Koyanagi, J., Nagayama, H., Yoneyama, S. & Aoki, T., 1 6月 2016, In: Mechanics of Time-Dependent Materials. 20, 2, p. 219-232 14 p.

研究成果: Article › 査読

3 被引用数 (Scopus)

X-ray computed tomography used to measure fiber orientation in CFRP laminates

Yoshimura, A., Hosoya, R., Koyanagi, J. & Ogasawara, T., 2 1月 2016, In: Advanced Composite Materials. 25, 1, p. 19-30 12 p.

研究成果: Article › 査読

28 被引用数 (Scopus)

2015

Experimental and numerical studies of initial cracking in CFRP cross-ply laminates

Okabe, T., Imamura, H., Sato, Y., Higuchi, R., Koyanagi, J. & Talreja, R., 1月 2015, In: Composites Part A: Applied Science and Manufacturing. 68, p. 81-89 9 p.

研究成果: Article › 査読

40 被引用数 (Scopus)

Large-scale graphene-based composite films for flexible transparent electrodes fabricated by electrospray deposition

Kim, W. S., Moon, S. Y., Kim, H. J., Park, S., Koyanagi, J. & Huh, H., 12月 2015, In: Materials Research Express. 1, 4, 046404.

研究成果: Article › 査読

4 被引用数 (Scopus)

Torsional modulus and internal friction of polyacrylonitrile- and pitch-based carbon fibers

Ishikawa, M., Kogo, Y., Koyanagi, J., Tanaka, F. & Okabe, T., 17 11月 2015, In: Journal of Materials Science. 50, 21, p. 7018-7025 8 p.

研究成果: Article › 査読

12 被引用数 (Scopus)

2014

Dynamic and static failure behavior of notched CFRP laminate investigated by digital image correlation

Okuyama, I., Koyanagi, J., Arikawa, S. & Yoneyama, S., 3 12月 2014, In: Mechanics of Time-Dependent Materials. 18, 4, p. 685-695 11 p.

研究成果: Article › 査読

8 被引用数 (Scopus)

Long-term durability of tri-axial woven CFRP tube structure extended along the spin axis of spinning platforms for the SCOPE mission

Koyanagi, J., Watanabe, A., Kawabata, N., Ozaki, T., Higuchi, K., Ishimura, K. & Kasaba, Y., 4 3月 2014, In: Advanced Composite Materials. 23, 2, p. 115-128 14 p.

研究成果: Article › 査読

5 被引用数 (Scopus)

Mechanical properties of fiber/matrix interface in polymer matrix composites

Koyanagi, J., Ogihara, S., Nakatani, H., Okabe, T. & Yoneyama, S., 1 10月 2014, In: Advanced Composite Materials. 23, p. 551-570 20 p.

研究成果: Article › 査読

27 被引用数 (Scopus)

小柳 潤

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小柳潤