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Kiho Nishihara, Kei-ichi Okuyama, Rafael Rodriguez and Isai Fajardo
In this study, we focus on 3D-printed PEEK/CFRTP (Carbon-Fiber-Reinforced Thermoplastic) and PEEK (Polyether Ether Ketone) materials as new space materials. In space, there are intense ultraviolet (UV) rays that are weakened by the atmosphere on Earth, s...
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Norimitsu Okuyama, Kazufumi Nomura, Tomokazu Sano, Keiji Kadota, Seiya Nitta, Tetsuo Era and Satoru Asai
Blowholes caused by vaporization of the galvanized layer are a problem with galvanized steel sheets, which use lap joint welding. The laser ultrasonic method is the possible solution to realize the desirable 100% inspection instead of the conventional sa...
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Farhan Abdullah, Kei-ichi Okuyama, Akito Morimitsu and Naofumi Yamagata
The extreme heating environment during re-entry requires an efficient heat shield to protect a spacecraft. The current method of manufacturing a heat shield is labor intensive. The application of 3D printing can reduce cost and manufacturing time and imp...
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Farhan Abdullah, Kei-ichi Okuyama, Isai Fajardo and Naoya Urakami
The low Earth orbit (LEO) environment exposes spacecraft to factors that can degrade the dimensional stability of the structure. Carbon Fibre/Polyether Ether Ketone (CF/PEEK) can limit such degradations. However, there are limited in-orbit data on the pe...
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Jesus Gonzalez-Llorente, Aleksander A. Lidtke, Ken Hatanaka, Ryo Kawauchi and Kei-Ichi Okuyama
As small satellites are becoming more widespread for new businesses and applications, the development time, failure rate and cost of the spacecraft must be reduced. One of the systems with the highest cost and the most frequent failure in the satellite i...
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Naoto Kakuta, Naoki Okuyama, and Yukio Yamada
Pág. 025103
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Muhammad Miftahul Munir, Ferry Iskandar, Khairurrijal, and Kikuo Okuyama
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Ikuhiro SUMI, Goro OKUYAMA, Seiji NABESHIMA, Hidetoshi MATSUNO and Yasuo KISHIMOTO
Pág. 73
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Y. Sakai, A. Haga, S. Sugita, S. Kita, S.-I. Tanaka, F. Okuyama, and N. Kobayashi
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Satoshi Takeya, Kazumasa Honda, Akio Yoneyama, Yasuharu Hirai, Junichi Okuyama, Takeo Hondoh, Kazuyuki Hyodo, and Tohoru Takeda
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