Processing technologies for Nomex honeycomb composites (NHCs): A critical review

Nomex honeycomb composites have been paid significant attention for high performance structural applications in sandwich structures of aircrafts, aerospace, automotive, defense and so on. Both academia and industry have consensus that thin cell walls, cellular (hexagonal) structure, entrapped air inside cells, sandwich layers of phenolic resins (soft) and aramid fibers (brittle) enhance the machining complexity of Nomex honeycomb composites and...