Composite Pressure Vessels


Composite Pressure Vessel Technology



A composite overwrapped pressure vessel is a vessel consisting of a thin, non-structural liner wrapped with a structural fiber composite, designed to hold a fluid under pressure. The liner provides a barrier between the fluid and the composite, preventing leaks (which can occur through matrix microcracks which do not cause structural failure) and chemical degradation of the structure. In general, a protective shell is applied for protective shielding against impact damage. The most commonly used composites are fiber reinforced polymers (FRP), using glass fibers, carbon and kevlar fibers. The primary advantage of a composite pressure vessel as compared to a similar sized metallic pressure vessel is lower weight.