Abstract
FRP, is now well known as light and high strength materials for structural components, and widely used in aeronautic and astronautic equipments, sports goods, automobile components, and high pressure gas containers.
This paper describes mechanical properties of FRP, reinforced by carbon, aramide, or glass fibers, in comparison with other various materials. Basic design concept for FRP is presented together with the data trends of long term strength in stress rupture and fatigue. A short explanation is given on the items for design qualification tests in current design standard for FRP pressure vessels.
