Honda Motor Co., Ltd.

Yusuke Tsuchiyama

Kosuke Tatsushima

Koei Fujiki

Takeshi Watanabe

Michael Bruyneel

Koji Nozoe

A mandrel around which fiber-reinforced resin is wound, the mandrel including a cylinder portion having a plurality of first flat surface portions, and a pair of dome portions that are formed at respective ends of the cylinder portion and each include a plurality of second flat surface portions.

Mandrel and test piece collecting method for filament winding

A high-pressure vessel includes a liner and a reinforcing layer. The reinforcing layer includes an inner reinforcing layer and an outer reinforcing layer. Further, the inner reinforcing layer includes a first covering portion, a third covering portion, and a second covering portion. Edge surfaces of the first covering portion and the third covering portion that face each other are in contact with each other. Edge surfaces of the third covering portion and the second covering portion that face each other are also in contact with each other. The outer reinforcing layer covers the outside of the first covering portion, the third covering portion, and the second covering portion.

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Wako, Japan

Yusuke Tsuchiyama