Accession Number : AD0736351

Title :   Crack Growth Resistance in Laminated, Glass-Epoxy Sheet.

Descriptive Note : Technical rept.,

Corporate Author : WATERVLIET ARSENAL N Y

Personal Author(s) : Kendall,D. P.

Report Date : OCT 1971

Pagination or Media Count : 26

Abstract : The application of the concepts of linear, elastic fracture mechanics to multi- directional, laminated FRP/epoxy composite material is investigated. Center notched panels having filament orientations of 0 and plus and minus 60 degrees are loaded in tension normal to the notch direction. Extensive stable crack growth is obtained prior to fracture. Crack extension and applied load are simultaneously measured using a motion picture camera. The instananeous stress intensity factor is calculated using theory developed for isotropic materials, and is plotted against crack extension to obtain crack growth resistance curves. (Author, modified-PL)

Descriptors :   (*REINFORCED PLASTICS, CRACK PROPAGATION), EPOXY RESINS, GLASS TEXTILES, FRACTURE(MECHANICS), COMPOSITE MATERIALS, LAMINATES

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE