A review of type IV composite overwrapped pressure vessels
Alih John Eko, Jayantha Epaarachchi, Janitha Jeewantha, Xuesen Zeng
Abstract
Type IV Composite overwrapped pressure vessels (COPVs) are commonly used in high-pressure environments such as aerospace, automotive, and industrial sectors. The COPV Type IV vessels are characterized by their non-metallic liner, which is surrounded by composite materials, leading to significant reductions in weight and enhanced storage capacity. This review article outlines the essential aspects of the design, materials, manufacturing processes, and performance criteria associated with Type IV COPVs. It also explores advancements in resin systems, fiber reinforcements, and coatings, while addressing the challenges related to long-term durability, reliability, and safety. Furthermore, the review emphasizes recent developments in testing protocols, certification standards, and emerging research trends focused on creating the next generation of COPVs. Overall, this review offers a thorough insight into the current capabilities and future possibilities of Type IV COPVs, promoting innovation and further advancements in the field. • Review of design, materials, and manufacturing of Type IV COPVs. • Advances in liner fabrication and composite overwraps for safety. • Evaluation of testing methods for Type IV COPVs in aerospace and H₂ storage. • Future trends in cost-effective, recyclable Type IV COPVs for hydrogen.