Accession Number : AD0786143

Title :   Impact Strength of Fibrous Composite Materials for High Performance Structures.

Descriptive Note : Final rept. 15 Jun 73-31 Aug 74,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD

Personal Author(s) : Chang,George C.

Report Date : 31 AUG 1974

Pagination or Media Count : 125

Abstract : Some relevant properties of advanced fiber- reinforced com-posite materials are discussed within the context of material toughness. The state-of-the-art in impact testing of such composites is analyzed, with significant results also sum-marized. Results of a series of impact testing carried out in this investigation are discussed. The tests were designed to study such factors as: direction of impact, freezing, sea-water submersion, and impact strength (energy). Some ways of improving composite toughness are discussed. (Author, modified-PL)

Descriptors :   *Fiber reinforced composites, Impact strength, Structures, Fracture(Mechanics), Impact tests, Fiberglass, Composite materials, Metals, Matrix materials, Toughness, Graphite, Epoxy resins

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE