Experimental evaluation of strength of honeycomb structure products with polymer composite shell

Abstract

The development of engineering technologies involving the application of composite materials is related to the necessity of reducing the weight of structures without detriment to the required strength. The article presents the results of experimental studies on the evaluation of the strength of honeycomb structure products with a polymer composite shell. The honeycomb structure of a product is made with the Nomex core of high-temperature aramid paper formed into a honeycomb structure and covered with phenolic resin. Shell material HexPly® 8552 is solid amine toughened with epoxy resin. It contains unidirectional braided carbon or glass fibre. The product was exposed to static and dynamic loading with the help of a servohydraulic testing machine.