Author(s)

S. Okamoto, M. Yamamoto, K. Hosokawa, M. Nakano & K. Hanaoka

Abstract

The purpose of this research is to develop a method for designing and conducting mechanical analyses of Carbon Fiber Reinforced Plastic (CFRP) pressure vessels. In the present study, cocoon-shaped pressure vessels composed of CFRP were made using a filament winding machine. The mechanical properties of CFRP pressure vessels were examined by internal pressure loading experiment. A finite element analysis (FEA) was performed on an analysis model attempting to imitate the experiment. Then the equivalent elastic moduli of CFRPs used in the pressure vessels were identified by comparing the results of the FEA and the experiment. Keywords: CFRP, pressure vessel, burst, mechanical property, FEA. 1 Introduction Clean and renewable hydrogen energy has become more attractive. It is believed that the best way to store hydrogen gas is in pressure vessels. The goal of this research is to design and produce pressure vessels that can store hydrogen gas safely and economically. Specifically, this paper discusses a vessel produced by covering an inner vessel made of an alloy tough enough to avoid brittle fracture or a plastic that has a good gas barrier property with Carbon Fiber Reinforced Plastics (CFRPs).

Keywords

CFRP, pressure vessel, burst, mechanical property, FEA.